Ceramic-powder preparation

Ganguli D and Chatteqee M 1997 Ceramic Powder Preparation Handbook NorweW, MA Kluwer)... 

TABLE 3. SOME CERAMIC POWDERS PREPARED BY PLASMA SYNTHESIS... 

Ganguli, D., and Chatteijee, M., Ceramic Powder Preparation A Handbook, Kluwer Academic, Dordrecht, The Netherlands, 1997, 221. 

This section addresses the need for ceramic powder preparation and gives an overview of the methods. Several reviews categorize ceramic powder preparation techniques... 

Examples of the sol-gel process for ceramic powder preparation include titanate and aluminates , cuprate superconductors , ceramic packaging materials, and BaTiOs. ... 

Tungsten carbide from tungsten chloride, methane, and hydrogen is another example of nonoxide ceramic powder preparation . The reaction of the vapors takes place in heated tubes, dc plasmas or rf plasmas. The preparation of fine particles for high sintering reactivity is important in these nonoxide ceramics, which are otherwise difficult to density. 

Johnson D W Jr 1987 Innovations in ceramic powder preparation Ceramic Powder Science, Advances in Ceramics vol 21, ed G L Messing et al (Westerville, OFI The American Ceramic Society) pp 3-19... 

Frey M.H., Payne D.A. Synthesis and processing of barium titanate ceramics from alkoxide solutions and monolithic gels. Chem. Mater. 1995 7 123-129 Fu X., Qutubuddin S. S)mlhesis of titania-coated sMca nanoparticles using a nonionic water-in-oil microemulsion. Colloids Surf. A 2001 179 65-70 Ganguli D. Sol-emulsion-gel synthesis of ceramic particles. Bull. Mater. Sd. 1999 22 221-226 GanguU D., Chatteijee M. Ceramic Powder Preparation A Handbook. Boston Kluwer Academic Publishers, 1997... 

Fahrenholtz W.G., Smith D.M., Cesarano J. Effect of precursor particle size on the densification and crystallization behavior of mullite. J. Am. Ceram. Soc. 1993 76 433-437 Ganguli D., Chatterjee M. Ceramic Powder Preparation A Hand Book. Boston Kluwer Academic, 1997... 

High-purity spinel is a chemically derived spinel powder made hy the co-precipitation of magnesium and aluminum complex sulfates, with subsequent calcination to form the oxide compound. Purities range from 99.98-99.995%. Since it is chemically derived, the stoichiometries can he adjusted for virtually any MgOiAljOj ratio. The ceramic powders prepared hy this process can he hot pressed into transparent window materials with exceptional IR transmission range. 

The diversity of sizes and shapes of ceramic powders prepared by homogeneous precipitation, phase transformation, or aerosol techniques are reviewed by Matijevic and Gherardi [163]. (See, e.g., Fig. 12.) The... 

The application of the colloidal method is certainly not new to ceramic powder preparation, for example, ancient applications include the cigeing of clays for hand moulding. In addition, colloidal methodology has been applied for more than one hundred years to prepare clay slurries for casting into porous moulds, usually plaster-of-paris, to form thin walled, complex shaped bodies. Colloidal methods are also commonly used to fractionate ceramic abrasive media to obtain a desired narrow particle size distribution, however their use prior to consolidation of a ceramic body to eliminate or reduce in size the common heterogeneities associated with ceramic powders, such as agglomerates and inclusions, is relatively rare. 

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