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Microhardness of Mullite at Temperatures to 1000°
Author(s) -
Kollenberg Wolfgang,
Schneider Hartmut
Publication year - 1989
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.1151-2916.1989.tb06316.x
Subject(s) - mullite , indentation hardness , materials science , sapphire , composite material , mineralogy , metallurgy , microstructure , ceramic , chemistry , optics , laser , physics
The microhardness of mullite single crystals was measured at temperatures to 1000°C. The hardness decreased from about 15 GPa at room temperature to about 10 GPa at 1000°C. Thus, the mullite at 1000°C had a higher hardness than sapphire, approaching the value of SiC, but at room temperature was softer than both materials.