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Production of TiB 2 –TiN Composites by Combustion Synthesis and Their Properties
Author(s) -
Tomoshige Ryuichi,
Murayama Akio,
Matsushita Toru
Publication year - 1997
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.1151-2916.1997.tb02894.x
Subject(s) - tin , materials science , tungsten , self propagating high temperature synthesis , metallurgy , composite material , raw material , combustion , grain size , ceramic , corrosion , microstructure , chemistry , organic chemistry
The self‐propagating high‐temperature synthesis (SHS) process has been applied to formation of composites consisting of TiB 2 and TiN ceramics synthesized simultaneously. Ti, B, and BN powders were used as raw materials. The SHS reaction was initiated by a tungsten heating coil. XRD experiments confirmed that the reaction was complete, and that only TiB 2 and TiN phases were detected. Microstructural observations revealed that both TiN and TiB 2 crystal grains had small sizes of less than 1 μm in the composites with high TiN content. Inhibition of grain growth can be attributed to the pinning effect of TiN grains. Excellent corrosion resistance was obtained for HCl reagent.