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Effect of Inclusions on Grain Growth of Oxides
Author(s) -
ARIAS ALAN
Publication year - 1966
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1966.tb13181.x
Subject(s) - cermet , grain growth , materials science , oxide , grain size , metal , melting point , metallurgy , chemical engineering , composite material , ceramic , engineering
Effects of 10 vol% Cr, Mo, W, Mn, Ni, Ti, BN, and ZrB 2 on the grain growth of Al 2 O 3 , HfO 2 , MgO, and ZrO 2 were investigated by vacuum heat‐treating previously vacuum hot‐pressed specimens containing a layer of the cermet and a layer of the corresponding oxide. Most of the metals and compounds inhibit grain growth of the four oxides investigated. Some of the additions enhance grain growth, whereas others react with the matrix oxide. In most systems, the oxide layer adjacent to the cermet showed exaggerated grain growth at the interface. No correlation was found between reactivity, melting point, and volatility of the metal addition and grain growth of the matrix oxide.