Preparation of TiC-Ti3SiC2 composites by mechanical alloying and hot-pressing
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- Hashimoto Hitoshi
- Research Institute for Sustainable Materials, National Institute of Advanced Industrial Science and Technology
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- Sun Zheng Ming
- Research Institute for Sustainable Materials, National Institute of Advanced Industrial Science and Technology
書誌事項
- タイトル別名
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- Preparation of TiC-Ti<SUB>3</SUB>SiC<SUB>2</SUB> Composites by Mechanical Alloying and Hot-Pressing
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TiC-Ti3SiC2 composites having the microstructure of fine Ti3SiC2 grains dispersed in TiC matrix were synthesized by two processes, that is, mechanical alloying of a powder blend of Ti, Si and C followed by hot-pressing (MA-HP process) and hot-pressing of a powder blend of Ti, Si and TiC (MIX-HP process). The microstructure, damage tolerance and 4-point flexural strength of the composites were investigated. It was found that more uniform dispersion of Ti3SiC2 grains in TiC matrix was achieved by MA-HP process than by MIX-HP process, while the flexural strength of the composites synthesized by MA-HP process was lower than that by MIX-HP process, which may be attributed to micropores formed in the composites synthesized by MA-HP process. Preferential orientation of Ti3SiC2(001) and TiC(111) occurred in the composites synthesized by MA-HP process. We proposed two mechanisms of the preferential orientation. We also found that the dispersion of Ti3SiC2 in TiC matrix is effective in improving the damage tolerance of the brittle TiC, evidenced by the fact that no cracks emanated from the corners of Vickers indentations at a load of 9.8 N.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 49 (7), 1572-1578, 2008
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001204249161344
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- NII論文ID
- 10021148250
- 130004454038
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- NII書誌ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 9555624
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可