Chemical Processing Of Ceramics

Section I Powder Synthesis and Characterization © 2005 by Taylor & Francis Group, LLC 1 Hydrothermal Synthesis of Ceramic Oxide Powders* Shigeyuki Somiya, Rustum Roy, and Sridhar Komarneni CONTENTS I. Introduction..............................................................................................4 II. Hydrothermal Synthesis...........................................................................5 A. Some Results in Different Categories (Hydrothermal Decomposition) ..................................................................................7 1. Ilmenite .......................................................................................7 B. Hydrothermal Metal Oxidation .........................................................7 1. Zirconium Metal .........................................................................7 2. Aluminum Metal.........................................................................8 3. Titanium Metal ...........................................................................8 C. Hydrothermal Reactions ....................................................................8 D. Hydrothermal Precipitation or Hydrothermal Hydrolysis.................9 1. Alumina.......................................................................................9 2. Zirconia .....................................................................................11 E. Hydrothermal Electrochemical Method ..........................................11 F. Reactive Electrode Submerged Arc.................................................14 G. Hydrothermal Mechanochemical Process .......................................14 H. Microwave Hydrothermal Process...................................................16 I. Hydrothermal Sonochemical Method..............................................18 III. Ideal Powders and Real Powders ..........................