Buch, Englisch, 223 Seiten, Format (B × H): 155 mm x 235 mm, Gewicht: 365 g
ISBN: 978-1-4471-1810-7
Verlag: Springer
If a substance is repeatedly subdivided, the result is what are known as "microscopic particles". These particles are distinguished from the solid mass which they originally formed by the size of the surface area per unit weight. This simple difference holds true down to a certain lower size limit, and when this limit is exceeded, a new state of matter is reached, in which the behavior of the particles is quite different to that of the original solid. Particles in this state are termed "superfine particles", and are distinct from ordinary particles. The size of the superfine particles, that is to say the size limit below which particle behavior is completely different from the behavior of the original solid, varies a good deal depending on the physical properties of the substance in question. Properties such as magnetism and electrical resistance are closely related to the internal structural properties of the particles themselves, such as the magnetization processes of their respective magnetic domains, and the mean free path of charged bodies. This internal structure therefore limits the size of the superfine particles. In ceramic processing, on the other hand, the surface area of the particles themselves becomes an even more important factor than their internal structure. In this case, the size of the superfine particles is determined by the interaction between water and solvents on the surface of the particles.
Zielgruppe
Research
Weitere Infos & Material
1 Fundamentals of Superfine Particles.- 1.1 Introduction.- 1.2 Properties of Superfine Particles.- 1.3 Volume Effect in Superfine Particles.- 1.4 Surface Effect in Superfine Particles.- 1.5 Interaction Between Superfine Particles.- 2 Physics of Superfine Particles.- 2.1 Introduction.- 2.2 Structure and Form.- 2.3 Properties.- 3 Chemistry of Superfine Particles.- 3.1 Introduction.- 3.2 Adsorption.- 3.3 Particle Dispersion.- 3.4 Particle Flocculation.- 3.5 Rheology.- 3.6 Gels.- 4 Physical Manufacturing Processes.- 4.1 Introduction.- 4.2 Milling Method.- 4.3 Build-up Method.- 4.4 Outlook for Further Technological Developments in the Production of Superfine Particles.- 4.5 Handling of Superfine Particles.- 5 Chemical Manufacturing Processes.- 5.1 Introduction.- 5.2 Precipitation.- 5.3 Hydrolysis.- 5.4 Atomization.- 5.5 Oxidation-Reduction Method.- 5.6 Freeze Drying.- 5.7 Laser Synthesis.- 5.8 Spark Discharge.- 6 Applications of Superfine Particles.- 6.1 Introduction.- 6.2 Use of Superfine Particles in Electronic Materials.- 6.3 Use of Superfine Particles in Magnetic Materials.- 6.4 Use of Superfine Particles in Optical Materials.- 6.5 Use of Superfine Particles in High Strength, High Toughness Materials.- 6.6 Use of Superfine Particles in Catalyst Materials.- 6.7 Use of Superfine Particles in Sensor Materials.
