Advanced Ceramic Powders

Somiya, S., Ed. Hydrothermal Preparation of Fine Powders, Advanced Ceramics IIP, Elsevier London, 1990. 

S. Somiya, Hydrothermal preparation of fine powders. Advanced Ceramics III (Elsevier), 207,243,1990. 

R. J. Pugh, Dispersion and Stability of Ceramic Powders, in Surface and Colloid Chemistry in Advanced Ceramics Processing, Marcel Dekker, New York, 1994, Chapter 4. 

Johnson D W Jr 1987 Innovations in oeramio powder preparation Ceramic Powder Science, Advances in Ceramics vol 21, ed G L Messing ef a/(Westerville, OFI The Amerioan Ceramio Sooiety) pp 3-19... 

Sihcon nitride occurs in two forms, a-Si N and P-Si N. Pure Si N is white, but the colors of commercial materials may be tan, gray, or black because of residual siUcon or impurities. Si N may be prepared by nitriding siUcon powder at 1200—1400°C or, for extremely fine-grained Si N, by the reaction of SiCl or SiH and N2 or NH (see also Advanced ceramics). 

Besides the chemical industry, sihcon is used as a powder in the ceramics (qv) industry for the production of sihcon carbide and sihcon nitride parts (see Advanced ceramics). Sihcon powder is also used as an explosive for defense apphcations and in the refractory industry for plasma spraying with other oxide mixtures (see Refractory coatings). 

Chemically Synthesized Powders. Chemical synthesis provides a means of produciag powders for manufacturiag advanced ceramics. Disadvantages of chemically synthesized raw materials are expense and difficulties ia scale-up and availabihty. Additionally, ultrafine particle-size powders produced by chemical synthesis pose some unresolved processiag problems ia the areas of handling and mixing. 

Vapor-Phase Techniques. Vapor-phase powder synthesis teclmiques, including vapor condensation, vapor decomposition, and vapor—vapor, vapor—Hquid, and vapor—soHd reactions, employ reactive vapors or gases to produce high purity, ultrafine, reactive ceramic powders. Many nonoxide powders, eg, nitrides and carbides, for advanced ceramics are prepared by vapor-phase synthesis. 

The preparation of ceramic powders by CVD is a promising and growing field. These powders are used as precursors for the processing of advanced ceramics, or directly as powder for such applications as abrasives. 

M. Heule, S. VuUlemin, and L.J. Gauckler. Powder-based ceramic meso- and microscale fabrication processes , Advanced Materials 15 (2003), 1237-1245. 

Powdered metallurgy/advanced ceramics fine powder sinters and bonds very quickly... 

Sproson DW, Messing GL (1987) In Messing GL, Mazdiyashi KS, McCauley JW, Haber RA (eds) Advanced ceramics, vol 21, Ceramic powder science. American Ceramic Society, Westerville, Ohio, p99... 

Izaki K, Hakkei K, Ando K, Kawakami KT, Niihara K (1988) Fabrication and Mechanical Properties of Si3N4/SiC Composites from Fine, Amorphous Si-C-N- Powder Precursors. In Mackenzie D (ed) Ultrastructural Processing of Advanced Ceramics, John Wiley 8t Sons Inc, New York, p 891... 

Powder-based ceramic meso- and microscale fabrication processes. Advanced Engineering Materials, 15, 1237-1245. 

Calcote, H. F, Felder, W Keil, D. G., and Olson, D. B., Anew flame process for synthesis of Si3N4 powders for advanced ceramics. Twenty-third Symposium (Interruitioruil) on Combustion, The Combustion Institute, Pittsburgh, 1739 (1990). 

Dawson, W.J., Hydrothermal synthesis of advanced ceramic powders. Am. Ceram. Soc. Bull., 67, 1673, 1988. 

M. Descamps, B. Thierry, A. Leriche, Powder characteristics influence on the properties of tape casted alumina and aluminium nitride materials. Extended abstract of International Conference on Shaping of Advanced Ceramics, April 25-27,1995, Mol, Belgium. 

Wasche, R.. Naito. M.. and Hackley. V.A.. Experimental study on zeta potential and streaming potential of advanced ceramic powders. Powder Technol.. 123, 275, 2002. 

The discovery of the new high Tc, superconducting ceramics has generated excitement among physicists and material scientists alike. It is important to recognize that these materials are very similar to other advanced ceramics in that they are prepared from oxide powders which are pressed and sintered. They are polycrystalline materials whose electrical, magnetic, and mechanical properties will be critically dependent on their... 

What is now called sol-gel technology was originally developed by mineralogists for the preparations of homogeneous powders for use in studies of phase equilibria (72-74), by chemists for manufacturing nuclear fuel pellets (75, 76), and by ceramists for the preparation of advanced ceramic materials (77, 78). 

Spray drying [B.48, B.97] is used in the manufacture of granulated press powders for tiles and electronic parts. It also plays an important role in the industrial production and development of high-performance (advanced) ceramics because of the ability of this process to meet size distribution requirements and give granules with a smooth surface and spherical shape, all resulting in excellent flowability, which is important for the subsequent forming step. Another reason for the widespread use of spray dryers in the ceramic industry is the fact that they can handle abrasive feedstocks without problems. 

Foundation item Ningxia Natural Science Fund (NZ0740), China. The Key Lab of Powder Material Advanced Ceramics (Ningxia, China. 0601)... 

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