Chemistry of Powder Production by Yasuo Arai (auth.)

By Yasuo Arai (auth.)

Chemistry of Powder Production specializes in the solid-state chemistry of powder fabrics and relates this to the constitution, houses and practise, and characterization suggestions for those vital commercial items. also, the houses of the debris are mentioned with regards to their floor constitution and features. This booklet describes the basics of statistical tools for measuring the features of debris. New complicated fabrics being built in powder know-how production thoughts also are emphasized, together with powdered fabrics for complicated ceramics in addition to magnetic and pigment materials.

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Y. Fukuda, Measurements of Colour and Its Application, Nikkan Kogyo, p. 94 (1962). Y. Toda, K. Hashimoto, S. Aoki and Y. Arai, Gypsum Lime, 202, 28 (1986). Y. Toda, K. Hashimoto, K. Hashimoto and Y. Arai, l. Colour Mater. Soc. , 59(55),183 (1986). 1. Otsuka, l. Colour Mater. Soc. , 58, 165 (1985). References 23 [15] Y. Toda, K. Hashimoto and Y. Arai, J. Colour Mater. Soc. , 53, 505 (1980). [16] S. Nobuoka, J. Colour Mater. Soc. , 55, 763 (1982). [17] Y. Toda, K. Hashimoto, K. Hashimoto and Y. Arai, Gypsum Lime, 206, 11 (1987).

Arai, Gypsum Lime, 202, 28 (1986). Y. Toda, K. Hashimoto, K. Hashimoto and Y. Arai, l. Colour Mater. Soc. , 59(55),183 (1986). 1. Otsuka, l. Colour Mater. Soc. , 58, 165 (1985). References 23 [15] Y. Toda, K. Hashimoto and Y. Arai, J. Colour Mater. Soc. , 53, 505 (1980). [16] S. Nobuoka, J. Colour Mater. Soc. , 55, 763 (1982). [17] Y. Toda, K. Hashimoto, K. Hashimoto and Y. Arai, Gypsum Lime, 206, 11 (1987). 3 Powder fundamentals A powder is an assembly of fine solid particles. It has, therefore, in general a very large surface area per unit weight (specific surface area) and a high surface energy resulting from numerous lattice defects existing on the surface.

Hence, both cations and anions near the surface are rearranged to neutralize this excess charge by their polarization, as shown in Fig. 9. Thus, the surface anions having a high polarizability move a little way from the surface to the outside by the repulsion between their dipole moments and cations on the inside. Next, the surface cations also move a little way towards the interior to positions of minimum potential energy. 9 Surface structure of the (100) plane in an NaCl crystal. 02 nm to the lower side [6].

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