Lippens / Jumas / Génin ICAME 2005

Proceedings of the 28th International Conference on the Applications of the Mössbauer Effect (ICAME 2005) held in Montpellier, France, 4-9 September 2005, Volume II ( Part III-V/V)
2007
ISBN: 978-3-540-49853-7
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 683 Seiten

This book provides an up-to-date overview of the Mössbauer effect in physics, chemistry, electrochemistry, catalysis, biology, medicine, geology, mineralogy, archaeology and materials science. Coverage details the most recent developments of the technique especially in the fields of nanoparticles, thin films, surfaces, interfaces, magnetism, experimentation, theory, medical and industrial applications and Mars exploration.

Autoren/Hrsg.

Lippens, P. -E.

Jumas, J. -C.

Génin, J. -M. R.

Inhaltsverzeichnis

1;Title page ;2
2;Copyright page ;3
3;Table of contents ;4
4;Synchrotron Mössbauer retlectometry using stroboscopic detection
;12
4.1;1 Introduction;12
4.2;2 The stroboscopic synchrotron Mössbauer reflectometry;13
4.3;3 Results and discussion;15
4.4;4 Conclusion;17
4.5;Reference;17
5;Synthesis and characterisation of the Fe(II-III) hydroxy-formate green rust
;19
5.1;1 Introduction;19
5.2;2 Materials and methods;20
5.3;3 Results and discussion;20
5.3.1;3.1 Eh and pH vs time curves;20
5.3.2;3.2 Analyses of the precipitate at various oxidation times;21
5.4;4 Conclusion;23
5.5;References;23
6;Monitoring structural transformation of hydroxy-sulphate green rust in the presence of sulphate reducing bacteria
;25
6.1;1 Introduction;25
6.2;2 Experimental methods;26
6.3;3 Results and discussion;27
6.3.1;3.1 Bioreduction of lepidocrocite;27
6.3.2;3.2 Reactivity of GR2 with SRB;27
6.4;4 Conclusion;29
6.5;References;29
7;In situ 119Sn Mössbauer spectroscopy used to study lithium insertion in c-Mg2Sn
;30
7.1;1 Introduction;30
7.2;2 Experimental;31
7.3;3 Results and discussions;31
7.4;4 Conclusions;33
7.5;References;33
8;In situ 119Sn Mössbauer spectroscopy study of Sn-based electrode materials
;34
8.1;1 Introduction;34
8.2;2 Experimental;35
8.3;3 Results and discussion;35
8.4;4 Conclusion;38
8.5;References;38
9;Influence of Cu and Ni on the morphology and composition of the rust layer of steels exposed to industrial environment
;40
9.1;1 Introduction;41
9.2;2 Experimental procedures;41
9.3;3 Results and discussion;42
9.4;4 Conclusions;46
9.5;References;47
10;Mossbauer investigations of corrosion environment influence on Fe valence states in oxide films of zirconium alloys
;48
10.1;1 Introduction;48
10.2;2 Technique of alloy preparation;48
10.3;3 Experimental results;49
10.3.1;3.1 Spectra obtained after corrosion of alloys in water with Band Li;49
10.3.2;3.2 Corrosion in air;51
10.3.3;3.3 Corrosion in oxygen;51
10.3.4;3.4 Corrosion in autoclave;52
10.4;4 Conclusion;52
10.5;References;52
11;Atmospheric corrosion of mild steel in Oman
;53
11.1;1 Introduction;53
11.2;2 Samples preparation and experimental methods;54
11.3;3 Results and discussion;54
11.4;4 Conclusions;57
11.5;References;58
12;Structural transformations in lithiated Mn2Sb electrodes probed by Mössbauer spectroscopy and X-ray diffraction
;59
12.1;1 Introduction;59
12.2;2 Experimental;60
12.3;3 Results and discussions;61
12.3.1;3.1 Sample A;61
12.3.2;3.2 Samples B, C, D, E and F;62
12.3.3;3.3 Sample G;63
12.3.4;3.4 Phase formation processes;63
12.4;4 Conclusions;64
12.5;References;65
13;Mössbauer study on LiFeP04 cathode material for lithium ion batteries
;66
13.1;1 Introduction;66
13.2;2 Experimental section;68
13.3;3 Results and discussion;68
13.4;4 Conclusion;70
13.5;References;70
14;Evaluation of structural and electrochemical properties of the MnSb-Li system as anode for Li-ion batteries
;72
14.1;1 Introduction;72
14.2;2 Exper imental aspects;73
14.3;3 Results and discussions;74
14.4;4 Conclusions;76
14.5;References;77
15;Iron ions in ZSM-5 zeolite: Fe3+ in framework, Fe2+in extra-framework positions in catalytic N2O decomposition
;78
15.1;1 Introduction;78
15.2;2 Experimental;79
15.2.1;2.1 Sample preparation;79
15.2.2;2.2 Mossbauer measurements;79
15.2.3;2.3 Catalytic performance;79
15.3;3 Results and discussion;80
15.3.1;3.1 57Fe isomorphous substitution;80
15.3.2;3.2 Ion exchange of Fe2+;80
15.3.3;3.3 Catalytic performance;81
15.3.4;3.4 Effect of N2O as reflected in the in situ spectra;81
15.4;References;82
16;119Sn Mössbauer study of nickel-tin anodes for rechargeable lithium-ion batteries
;84
16.1;1 Introduction;84
16.2;2 Experimental;85
16.3;3 Results and discussion;85
16.4;4 Conclusions;89
16.5;References;89
17;Phase composition and distribution of corrosion products grown on galvanised steel in contact with hot water
;90
17.1;1 Introduction;90
17.2;2 Experimental details;91
17.3;3 Results and discussion;91
17.4;References;95
18;Mechanosynthesis and characterisation of the Li-Sn system
;96
18.1;1 Introduction;96
18.2;2 Experimental;97
18.3;3 Results and discussion;97
18.4;4 Conclusions;99
18.5;References;100
19;Chemical stability of hydroxysulphate green rust synthetised in the presence of foreign anions: carbonate, phosphate and silicate
;101
19.1;1 Introduction;101
19.2;2 Materials and methods;102
19.3;3 Transformation of hydroxysulphate green rust and role of the carbonate species;102
19.4;4 Stabilization of hydroxysulphate green rust by phosphate and silicate anions;104
19.5;5 Conclusion;105
19.6;References;105
20;Mössbauer characterization of calcium-ferrite oxides prepared by calcining FezO3 and CaO
;106
20.1;1 Introduction;106
20.2;2 Experimental;107
20.3;3 Results and discussion;107
20.4;References;109
21;Relative Lamb-Mössbauer factors of tin corrosion products
;111
21.1;1 Introduction;111
21.2;2 Experimental;112
21.3;3 Results;113
21.3.1;3.1 Hyperfine parameters;113
21.3.2;3.2 Lamb-Mössbauer factor ({-factor);113
21.4;4 Conclusions;114
21.5;References;114
22;Study of the electrochemical properties in substituted Li2Ti3O7 ramsdellite
;115
22.1;1 Introduction;115
22.2;2 Experimental;116
22.3;3 Results and discussion;118
22.4;4 Conclusion;118
22.5;References;118
23;A Mössbauer spectroscopic study of an industrial catalyst for dehydrogenation of etylbenzene to styrene
;120
23.1;1 Introduction;120
23.2;2 Experimental;122
23.3;3 Results and discussion;123
23.4;References;125
24;Generation of long-lived isomeric states via bremsstrahlung irradiation
;127
24.1;1 Introduction;127
24.2;2 Mössbauer spectroscopy with higher resolution;128
24.3;3 Excitation by bremsstrahlung;129
24.4;4 Experiment and results;130
24.5;5 Gravitational impact;131
24.6;References;132
25;Magnetic and thermal Mössbauer effect scans: a new approach
;133
25.1;1 Introduction;134
25.2;2 Experiments;135
25.3;3 Conclusion;138
25.4;References;138
26;Velocity calibration for in-situ Mössbauer data from Mars
;139
26.1;1 Introduction;140
26.2;2 The MERView program;140
26.3;3 Velocity calibration;141
26.4;4 Conclusion;143
26.5;References;144
27;A simple model to extract hyperfine interaction distributions from Mössbauer spectra
;145
27.1;1 Introduction;145
27.2;2 The model;146
27.3;3 Examples of results;147
27.4;4 Discussion and conclusions;148
27.5;References;148
28;Dynamical beats of forward-scattered resonant synchrotron radiation as a nuclear polariton effect
;149
28.1;1 Introduction;149
28.2;2 Contracting nuclear exciton;150
28.3;3 Dynamical beats as a polariton effect;151
28.4;References;152
29;Multipurpose spectrometer TERLAB for depth selective investigation of surface and multilayer
;154
29.1;1 Introduction;154
29.2;2 Block-diagram of spectrometer;155
29.3;3 Investigation procedure;156
29.4;4 Numerical simulation of analytical signals;157
29.5;5 Fitting of experimental data;157
29.6;6 Example;160
29.7;References;160
30;Automated Mössbauer spectroscopy in the field and monitoring of fougerite
;161
30.1;1 Introduction;162
30.2;2 The instrument and experimental setup;162
30.2.1;2.1 The instrument MIMOS II;162
30.2.2;2.2 Experimental setup for in-field applications;162
30.3;3 First results;165
30.4;References;165
31;New in-beam Mössbauer spectroscopy stationat the Budapest Research Reactor
;166
31.1;1 Introduction;166
31.2;2 The new in-beam Mössbauer facility
;167
31.3;3 Expected performance of the system and fields of applications;167
31.4;Appendix;169
31.5;References;170
32;Effects of trapped electrons on the line shape in emission Mössbauer spectra
;171
32.1;1 Introduction;171
32.2;2 Materials and methods;172
32.3;3 Results and discussion;172
32.4;4 Conclusions;175
32.5;References;175
33;Development of a new method of the analysis mossbauer spectra of systems with nuclear heterogeneity
;176
33.1;1 Introduction;176
33.2;2 New method of the analysis mossbauer spectra;178
33.3;3 Application of the developed method;180
33.4;4 Conclusion;181
33.5;References;181
34;Radio-frequency controllable quantum interference in Mössbauer spectroscopy
;182
34.1;1 Introduction;182
34.2;2 Resonant fluorescence of Mössbauer radiation in the regime of RF resonance in excited nuclear state;183
34.3;References;185
35;Radio-frequency Mössbauer spectra of the "easy"-plane type magnetic system (FeBO3)
;186
35.1;1 Introduction;186
35.2;2 Physical model;187
35.3;3 Features of theoretical spectra;189
35.4;4 Experimental results;190
35.5;5 Conclusion;190
35.6;References;190
36;ERRATUM Radio-frequency Mössbauer spectra of the "easy"-plane type magnetic system (FeBO3) ;191
37;Advances in constant-velocity Mössbauer instrumentation
;193
37.1;1 Introduction;193
37.2;2 Constant-velocity strategy;194
37.3;3 General design considerations and operation;195
37.4;4 Experimental results and further work;196
37.5;References;197
38;Optimization of the filter technique
;198
38.1;References;202
39;Experimental observation of vibrations produced by pulsed laser beam in MgO:57Fe
;203
39.1;1 Mössbauer spectroscopy, laser-induced effects;203
39.2;References;207
40;Characterization of products emanating from conventional and microwave energy roasting of chalcopyrite (CuFeS2) concentrate
;208
40.1;1 Introduction;208
40.2;2 Experimental;211
40.2.1;2.1 Materials and roasting process;211
40.2.2;2.2 Characterisatio n techniques;211
40.3;3 Results and discussion;212
40.4;4 Conclusions;213
40.5;References;213
41;Mössbauer analysis and magnetic properties of Invar Fe-Ni-C and Fe-Ni-Mn-C alloys
;214
41.1;1 Introduction;214
41.2;2 Experimental;215
41.3;3 Results and discussion;215
41.4;4 Conclusions;220
41.5;References;220
42;Phase coexistence in mechanicallly alloyed iron-manganese powders
;221
42.1;1 Introduction;221
42.2;2 Experimental;223
42.3;3 Results and discussion;224
42.4;References;225
43;Synthesis and characterization of Fe3AIC0.5 by mechanical alloying
;227
43.1;1 Introduction;227
43.2;2 Experimental procedure;229
43.3;3 Results and discussions;229
43.4;4 Conclusions;232
43.5;References;233
44;Mössbauer and X-ray diffraction characterization of Fe60Al40 coatings prepared by thermal spraying
;234
44.1;1 Introduction;234
44.2;2 Experimental method;235
44.3;3 Results and discussion;236
44.4;4 Conclusion;240
44.5;References;240
45;Formation of Mn-doped iron silicldes by ball milling
;241
45.1;1 Introduction;241
45.2;2 Experimental;243
45.3;3 Results and discussion;244
45.4;4 Conclusions;245
45.5;References;245
46;Calculation of absolute concentrations and probability of resonant absorption for iron-bearing precipitates in zirconium alloys
;247
46.1;1 Introduction;247
46.2;2 Theoretical dependence;248
46.3;3 Results of investigations;250
46.4;4 Discussion of results;252
46.5;5 Conclusions;253
46.6;References;253
47;Mössbauer spectroscopy and X-ray diffraction study of the Fe3-xTixAI ternary alloys
;254
47.1;1 Introduction;254
47.2;2 Experimental;255
47.3;3 Results and discussion;256
47.4;4 Conclusions;257
47.5;References;257
48;ERRATUM Mössbauer spectroscopy and X-ray diffraction study of the Fe3-xTixAI ternary alloys ;259
49;Complexes based on ethylene- and propylene-bridged-pentadentate-Fe(lII)-units allow interplay between magnetic centers and multistability investigated by Mdssbauer spectroscopy
;260
49.1;1 Introduction;260
49.2;2 Experimental;261
49.2.1;2.1 Ligand:;261
49.2.2;2.2 Precursor;261
49.2.3;2.3 Multinuclear complexes;262
49.2.4;2.4 Mössbauer spectroscopy;262
49.3;3 Results and discussion;263
49.4;References;266
50;Hyperfine interactions, structure and magnetic properties of nanocrystalline Co-Fe-Ni alloys preparedby mechanical alloying
;267
50.1;1 Introduction;267
50.2;2 Experimental details;268
50.3;3 Results and discussion;268
50.4;4 Conclusions;271
50.5;References;272
51;Metallurgical behaviour of iron in brass studied using Mössbauer spectroscopy ;273
51.1;1 Introduction;273
51.2;2 Experimental;273
51.3;3 Result and discussion;274
51.4;4 Conclusion;277
51.5;References;277
52;Chemical tuning of high-spin complexes based on 3-and 4-hydroxy-pentadentate-Fe (III) complex-units investigated by Mössbauer spectroscopy
;278
52.1;1 Introduction;278
52.2;2 Experimental;279
52.2.1;2.1 Ligands;279
52.2.2;2.2 Precursors;279
52.2.3;2.3 Multinuclear complexes;279
52.2.4;2.4 Mössbauer spectroscopy;281
52.3;3 Results and discussion;281
52.4;4 Conclusion;284
52.5;References;284
53;Determination of the chromium concentration of phase decomposition products in an aged duplex stainless steel
;285
53.1;1 Introduction;285
53.2;2 Experimental;286
53.3;3 Results and discussion;287
53.3.1;3.1 Cr concentration of the iron-rich phase;287
53.3.2;3.2 Cr concentration of the chromium-rich phase;289
53.4;4 Conclusion;291
53.5;References;291
54;Mössbauer spectroscopy study of mechanically alloyed Fe203-(Al, Co and WC) systems
;292
54.1;1 Introduction;292
54.2;2 Materials and methods;293
54.3;3 Results and discussion;294
54.4;4 Conclusions;297
54.5;References;297
55;Mössbauer study of the invar Fe-Ni and Fe-Ni-C alloysin magnetic field
;298
55.1;1 Introduction;298
55.2;2 Experimental details;299
55.3;3 Results and discussions;300
55.4;4 Conclusions;301
55.5;References;302
56;Mössbauer study of Mg-Ni(Fe) alloys processedas materials for solid state hydrogen storage
;303
56.1;1 Introduction;304
56.2;2 Experimental;304
56.3;3 Results and discussions;304
56.4;4 Conclusions;308
56.5;References;309
57;Characterizing the ordering of thermomechanically processed high-Si steel by Mdssbauer effect techniques
;310
57.1;1 Introduction;310
57.2;2 Experimental;311
57.3;3 Results and discussion;312
57.4;4 Conclusions;313
57.5;References;313
58;Effect of hydrogen on interatomic bonds in austenitic steels
;314
58.1;1 Introduction;314
58.2;2 Experimental;315
58.3;3 Results and discussion;315
58.3.1;3.1 Debay temperature;315
58.4;4 Conclusions;318
58.5;References;318
59;Quadrupole interactions at 57Fe and 119Sn in 3d-metal antimonides
;319
59.1;1 Introduction;319
59.2;2 Results and discussion;320
59.2.1;2.1 Fe1+xSb system;320
59.2.2;2.2 Ni1 +xSb and Co1+xSb system;320
59.2.3;2.3 (Ni1-yFey)Sb solid solution;321
59.3;3 Conclusions;322
59.4;References;322
60;Effect of N-substitution in multinuclear complexes allows interplay between magnetic states and multistability in vestigated by Mössbauer spectroscopy
;323
60.1;1 Introduction;323
60.2;2 Experimental;324
60.2.1;2.1 Ligands;324
60.2.2;2.2 Precursors;324
60.2.3;2.3 Nonanuclear complexes;325
60.2.4;2.4 Mössbauer spectroscopy;325
60.3;3 Results and discussion;325
60.4;References;328
61;Mössbauer, X-ray diffraction and magnetization studies of Fe-Mn-AI-Nb alloys prepared by highenergy ball milling
;329
61.1;1 Introduction;329
61.2;2 Experimental;330
61.3;3 Results and discussion;330
61.3.1;3.1 Fe60Mn10Al20Nb10 powders milled for 12,24 and 36 h;330
61.3.2;3.2 (Fe60Mn10AI30)100-xNbx system with x = 0, 5 and 10 milled for 12 h;334
61.4;4 Conclusions;334
61.5;References;334
62;CEMS study on diluted magneto titanium oxide films prepared by pulsed laser deposition
;336
62.1;1 Introduction;336
62.2;2 Experimental;338
62.3;3 Results and discussion;338
62.4;4 Summary;342
62.5;References;342
63;Elastic properties of filled-Skutterudite compounds probed by Mössbauer nuclei
;343
63.1;1 Introduction;344
63.2;2 Experimental procedure;344
63.3;3 Experimental results;344
63.4;4 Summary;346
63.5;References;347
64;Mössbauer spectroscopy study of spin structure and its in-field andtemperature dynamics in B2 ordered Fe(AI) alloys
;348
64.1;1 Introduction;348
64.2;2 Experimental;349
64.3;3 Resultsanddiscussion;349
64.4;References;351
65;57Fe Mössbauer spectra and magnetic data from the kagomé antiferromagnet H3O-jarosite
;353
65.1;References;357
66;Structural evolution of ball-milled permalloy
;358
66.1;1 Introduction;358
66.2;2 Experimental;359
66.3;3 Phase evolution in milled elemental powder;359
66.4;4 Atomic order in milled ribbon;361
66.5;5 Temperature investigations;362
66.6;6 Summary;363
66.7;References;363
67;57Fe Mössbauer and magnetic studies of DyFe12-xTax compounds
;364
67.1;1 Introduction;364
67.2;2 Experiment al;365
67.3;3 Results and discussion;366
67.4;References;368
68;Gol'danskii-Karyagin effect and induced fields in rare earth-transition metal stannides
;370
68.1;1 Introduction;370
68.2;2 Experimental;371
68.3;3 Results;371
68.4;4 Discussion;373
68.5;References;374
69;Thermal equilibrium defects in iron-based alloys
;375
69.1;1 Introduction;375
69.2;2 Experimental and results;376
69.3;3 Final conclusion;379
69.4;References;380
70;Study of the [Fe(OMe)(dpm)2]2 dimer in the presence of a magnetic field by using Mössbauer spectroscopy
;381
70.1;References;385
71;Distribution of electric and magnetic hyperfine fields in Fe-rich gallo-germanates
;386
71.1;1 Introduction;386
71.2;2 Experimental results;387
71.3;3 Discussion;388
71.4;4 Conclusions;390
71.5;References;390
72;Mössbauer effect studies on the formation of iron oxide phases synthesized via microwave-hydrothermal route
;391
72.1;1 Introduction;392
72.2;2 Experimental;392
72.3;3 Results and discussion;393
72.4;References;396
73;Magnetic behavior of the bond random mixed compound FE(BRxl1 - x )2(x = 0.9) with Mössbauer spectroscopy
;397
73.1;1 Introduction;397
73.2;2 Experimental;398
73.3;3 Results and discussion;398
73.4;4 Summary;401
73.5;References;401
74;Mössbauer studies of the layered compound 1T-TAS2
;402
74.1;1 Introduction;402
74.2;2 Experimental arrangement;403
74.3;3 Experimental results;406
74.4;4 Conclusion;407
74.5;References;407
75;57Fe Mössbauer spectroscopy studies of Sr2Fe1-xCrxMo1-xWxO6 double perovskite compounds
;408
75.1;1 Introduction;408
75.2;2 Experimental;409
75.3;3 Results and discussion;409
75.4;4 Conclusions;412
75.5;References;412
76;Magnetic and Mössbauer study of Mg0.9Mn0.1CrxFe2-xO4 ferrites
;413
76.1;1 Introduction;413
76.2;2 Experimental procedures;414
76.3;3 Results and discussion;415
76.4;References;418
77;Theoretical investigation of Mössbauer hyperfine interactions in ordered FeNi and disordered Fe-Ni alloys
;420
77.1;1 Introduction;420
77.2;2 Theoretical method;421
77.3;3 Results and discussion;421
77.4;References;424
78;Tin-doped spinel-related oxides of composition M3O4 (M = Mn, Fe, Co)
;425
78.1;1 Introduction;425
78.2;2 Experimental;426
78.3;3 Results and discussion;426
78.4;4 Conclusions;429
78.5;References;429
79;Mössbauer study of 1/8 anomaly in La2-xBaxCuO4
;430
79.1;1 Introduction
;430
79.2;2 Experimental;431
79.3;3 Results and discussion;431
79.4;References;433
80;237Np and 57Fe Mössbauer study of NpFeGa5
;434
80.1;1 Introduction;434
80.2;2 Experimental;435
80.3;3 Results and discussion;435
80.4;4 Conclusion;437
80.5;References;437
81;The study of superexchange interaction of ordered Li0.5Fe1.0Rh1.5O4
;439
81.1;1 Introduction;439
81.2;2 Experiments;440
81.3;3 Results and disscussion
;440
81.4;Referen ces;442
82;Amorphous Fe-Mg alloy thin films: magnetic properties and atomic vibrational dynamics
;443
82.1;1 Introduction;443
82.2;2 Experimental;444
82.3;3 Results and discussion;444
82.3.1;3.1 Magnetism;444
82.3.2;3.2 Vibrational dynamics;447
82.4;References;447
83;Neutron diffraction and Mössbauer study on FeGaxCr2- xS4
;449
83.1;1 Introduction;449
83.2;2 Experiments;451
83.3;3 Results and discussion;451
83.4;4 Conclusion;453
83.5;References;453
84;57Fe Mössbauer spectroscopy on the cyclic spin-cluster Fe6(tea)6(CH3OH)6
;454
84.1;1 Introduction;454
84.2;2 Experimental results;455
84.3;3 Conclusion;457
84.4;References;457
85;Mössbauer spectroscopic study of half-Heusler compounds
;458
85.1;1 Introduction;458
85.2;2 Experimental;459
85.3;3 Results and discussion;459
85.4;References;463
86;Mössbauer study of the martensitic transformation in a Ni-Fe-Ga shape memory alloy
;464
86.1;1 Introduction;464
86.2;2 Experimental methods;465
86.3;3 Results and discussion;466
86.4;4 Conclusions;466
86.5;References;467
87;The BM5Se9 phases: Mössbauer studies of the superconductors and the ferromagnets
;468
87.1;1 Introduction;468
87.2;2 Experimental;469
87.3;3 Results;470
87.3.1;3.1 Sn0.94Gao.06Nb4.70V0.30Se9 (ferromagnet)
;470
87.3.2;3.2 SbNb5Se9 (superconductor)
;471
87.4;4 Discussion;472
87.5;5 Conclusions;472
87.6;References;472
88;Systematic study of mechanical deformation on Fe3AlxSi1-x powders by Mössbauer spectroscopy
;473
88.1;1 Introduction;473
88.2;2 Experimental;475
88.3;3 Results and discussion
;476
88.3.1;3.1 Annealed samples;476
88.3.2;3.2 Deformed samples;477
88.4;4 Conclusions;478
88.5;References;478
89;Magneto-crystalline properties of BaFe12-2xMxSnxO19 (M = Sn, Ni, Zn) ferrite powders
;479
89.1;1 Introduction;480
89.2;2 Experimental;480
89.3;3 Results and discussion;481
89.4;4 Conclusions;485
89.5;References;486
90;Mössbauer studies of the re-entrant spin-glass behaviour of Fe-AI alloys
;487
90.1;References;490
91;Mössbauer study on the magnetic field-induced insulator-to-metal transition in perovskiteEU0.6Sr0.4MnO3
;491
91.1;1 Introduction;491
91.2;2 Experiments;493
91.3;3 Results and discussions;493
91.4;References;496
92;57Fe and 151Eu Mössbauer studies of magnetoresistive Europium based cobalt perovskites
;497
92.1;1 Introduction;497
92.2;2 Experimental;498
92.3;3 Results and discussion;499
92.4;References;502
93;Creation of ferromagnetic properties of V-Fe and Zr-Fe alloys by hydrogen absorption
;503
93.1;1 Introduction;503
93.2;2 Experimental details;504
93.3;3 Results and discussion;505
93.3.1;3.1 V1-yFeyHx system
;505
93.3.2;3.2 Zr1-yFeyHx system
;506
93.4;4 Conclusion;507
93.5;References;507
94;Magnetic and structural properties of the Nd2(Fe100-xNbx)14B system prepared by arc melting
;508
94.1;1 Introduction;508
94.2;2 Experimental procedure;509
94.3;3 Results and discussion;510
94.4;4 Conclusions;512
94.5;References;513
95;Mössbauer spectroscopic studies of Fe-20 wt. % Cr ballmilled alloy
;514
95.1;1 Introduction;514
95.2;2 Experimental procedures;515
95.3;3 Result s and discussions;516
95.3.1;3.1 X-ray diffraction;516
95.3.2;3.2 Particle morphology;516
95.3.3;3.3 Mössbauer spectroscopy
;517
95.3.3.1;3.3.1 Preferential diffusion of Chromium atoms;521
95.4;4 Conclusion;521
95.5;Reference;521
96;Magnetotransport and magnetic properties of snlfospinels ZnxFe1-xCr2S4
;522
96.1;1 Introduction;522
96.2;2 Experimental;523
96.3;3 Results and discussion;524
96.4;4 Conclusion;527
96.5;References;527
97;Antiferromagnetic TiFe2 in applied fields: experiment and simulation
;528
97.1;1 Introduction;528
97.2;2 Model calculations;529
97.3;3 Discussion;531
97.4;4 Conclusions;532
97.5;References;532
98;Determination of Lamb-Mössbauer factors and lattice dynamics in some nitroprusside single crystals
;533
98.1;1 Introductlon;533
98.2;2 Experimental details and calculations;534
98.3;3 Results and discussion;535
98.4;4 Conclusions;536
98.5;References;537
99;Temperature dependent Mössbauer and neutron diffraction studies of CuxFe1-xCr2S4 compounds
;538
99.1;1 Introduction;538
99.2;2 Experiments;539
99.3;3 Results and discussion;540
99.4;4 Conclusion;543
99.5;Reference;543
100;Mössbauer effect study of the decagonal quasicrystal Al65Co15Cu20
;544
100.1;1 Introduction;544
100.2;2 Experimental procedure;545
100.3;3 Results and discussion;545
100.4;4 Conclusions;547
100.5;References;547
101;Absence of charge fluctuations of europium in metallics ingle crystals of EuCu2Si2
;548
101.1;1 Introduction;548
101.2;2 Experimental procedure;549
101.3;3 Results and discussion;550
101.4;4 Conclusions;552
101.5;References;552
102;Debye temperature and magnetic ordering in KxBa1-xFe2S3
;553
102.1;References;556
103;Mössbauer investigation of Fe0.51n1.5S3
;557
103.1;References;560
104;Mössbauer study of Fe0.05Ni0.95Cl2
;561
104.1;1 Introduction;561
104.2;2 Experimental;563
104.3;3 Results and discussions;564
104.4;References;565
105;Formation of Fei-B pairs in silicon at high temperatures
;566
105.1;1 Introduction;566
105.2;2 Experimental;567
105.3;3 Results and analysis;567
105.4;4 Discussion and conclusions;569
105.5;References;569
106;Identification of substitutional and interstitial Fe in 6H-SiC
;570
106.1;1 Introduction
;570
106.2;2 Experimental;571
106.3;3 Results and discussion;571
106.4;References;574
107;Mössbauer and magnetic study of Mn2+ - and Cr3+ -substituted spinel magnesioferrites of the composition Mg1-xMnxFe2-2xCr2xO4
;575
107.1;1 Introduction;575
107.2;2 Experimental;576
107.3;3 Results and discussion;576
107.4;References;579
108;Critical behavior of La0.67-y (Sr, Ba, Ca)0.33+yMn1-xSnxO3(x=0.01, 0.02, y=0, 0.07) perovskites
;580
108.1;1 Introduction;580
108.2;2 Experimental;581
108.3;3 Results and discussion;581
108.4;4 Conclusions
;584
108.5;References;585
109;Magnetization and magnetostriction studies of TbFeCoNFeCo multilayers
;586
109.1;1 Introduction;586
109.2;2 Experimental procedures;587
109.3;3 Results and discussion;587
109.4;4 Conclusion;591
109.5;References;591
110;Thickness dependence of the magnetic anisotropy of Fe layers separated by Al
;592
110.1;References;596
111;CEMS characterisation of Fe/hjgh-k, oxide interfaces
;597
111.1;1 Introduction;597
111.2;2 Experimental;598
111.3;3 Results and discussion;598
111.4;4 Conclusions;600
111.5;References;601
112;Hematite thin films: growth and characterization
;602
112.1;1 Introduction;602
112.2;2 Experimental details;603
112.3;3 Results and discussion;604
112.4;4 Conclusions;608
112.5;References;609
113;Mössbauer and optical investigation of Co3-xFexO4 thin films grown by sol-gel process
;610
113.1;1 Introduction;610
113.2;2 Experimental;611
113.3;3 Results and discussion;612
113.4;4 Conclusion;615
113.5;References;616
114;Mösshauer spectroscopical investigation of the exchange biased Fe/MnF2 interface
;617
114.1;1 Introduction;618
114.2;2 Samplepreparation andcharacterisation;618
114.3;3 SQUID magnetometry results;620
114.4;4 CEMS results and discussion;620
114.5;5 Summary;622
114.6;References;623
115;Intermixing during epitaxial growth and Mössbauer spectroscopy with probe layers
;624
115.1;References;627
116;Mössbauer and SEM study of Fe-AI film
;628
116.1;1 Introduction;628
116.2;2 Experimental methods;629
116.3;3 Results and discussion;630
116.4;References;632
117;Light-induced spin crossover observed for a Fe(II) complex embedded in a Nation membrane
;634
117.1;1 Introduction;634
117.2;2 Results;635
117.3;3 Conclusion;637
117.4;References;637
118;Author Index to Volumes 167/1-3, 168/1-3 and 169/1-3 (2006)
;638

Leseproben

"Influence of Cu and Ni on the morphology and composition of the rust layer of steels exposed to industrial environment (p. 739-740)

Abstract

Four samples of steels with alloying elements were exposed to an industrial environment during 1,955 days, aiming to elucidate the effect of the alloying elements Cu and Ni on the resistance of weathering steels to corrosion processes. The samples were characterized with optical microscopy, scanning electron microscopy (SEM), powder X-ray diffraction (XRD), saturation magnetization measurements and with energy dispersive (EDS), infrared, Mossbauer and Raman spectroscopies. All the steels originated orange and dark corrosion layers; their thicknesses were determined from the SEM images.

EDS data of such rust layers showed that the alloying element content decreases from the steel core towards the outer part of the rust layer. Moreover, in the dark rust layer some light-gray regions were identified in the Wand Cu-alloy steel, where relatively higher Cr and Cu contents were found. XRD patterns, infrared, Raman and Mossbauer spectra (298, 110 and 4 K) indicated that the corrosion products are qualitatively the same, containing lepidocrocite (yFeOOH; hereinafter, it may be referred to as simply L), goethite (aFeOOH; G), feroxyhite (bFeOOH; F), hematite (aFeZ03; H) and magnetite (Fe304; M) in all samples; this composition does not depend upon the steel type, but their relative concentrations is related to the alloying element. Mossbauer data reveal the presence of (super)paramagnetic iron oxides in the corrosion products. Saturation magnetization measurements suggest that feroxyhite may be an occurring ferrimagnetic phase in the rust layer.

Key words low alloy steels iron oxides -corrosion

1 Introduction

The knowledge of the resistance of steels to corrosion is very important for metallurgy industries. The weathering steel, also known as low alloy steel, does contain small proportions of alloying elements, typically not more than I mass% of, for instance, Cu, Cr, Ni or P. In some cases, the weathering steel is preferable to the mild steel, due to the formation of an adherent and compact rust layer known as "patina," which tends to decrease its corrosion rate. The formation of the patina is favored by the presence of alloying elements, and also of SOz and humid-dry cycles of the industrial atmosphere.

The exposition time to such conditions tends to increase the patina layer. According to the literature, the alloying elements tend mainly to decrease the size of the corrosion thickness [I, 2]. However, in those works, contents of the alloying elements were used in higher proportions than that of the weathering steel [3-6], and they were combined with other elements [7], making it difficult to infer about their individual contribution to the resistance of the steel to corrosion. The main objective of this work was to study specifically the role of Cu and Ni as alloying elements on the morphology and composition of the rust layer of the corresponding weathering steels."