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Preparation and Sintering Behavior of Fine‐Grained A1 2 O 3 ‐SiO 2 Composite
Author(s) -
Debély Pierre E.,
Barringer Eric A.,
Bowen H. Kent
Publication year - 1985
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.1151-2916.1985.tb09636.x
Subject(s) - mullite , sintering , composite number , materials science , relative density , grain size , phase (matter) , composite material , microsphere , chemical engineering , mineralogy , ceramic , chemistry , organic chemistry , engineering
A fine, uniform A1 2 O 3 ‐SiO 2 powder was prepared by heterocoagulation of narrow Al 2 O 3 and SiO 2 powders. This composite powder was dispersed, compacted, and fired in air at 900° to 1580°C for 1 to 13 h. Full density was achieved at 1550°C with the formation of a mullite phase. Relative densities of 83% and 98% (0.3 μm grain size) were measured for samples sintered at 1200°C for 13 h and at 1400°C for 1 h, respectively.