| 학회 |
한국재료학회 |
| 학술대회 |
2007년 가을 (11/02 ~ 11/02, 성균관대학교) |
| 권호 |
13권 2호 |
| 발표분야 |
전자재료 |
| 제목 |
Synthesis of MoSi2 and Mo5Si3 Intermetallic Compound by Mechanical Alloying |
| 초록 |
Molybdenum silicides has come to be recognized as an attractive candidate material for high temperature structural applications. In this study, we applied mechanical alloying process to produce molybdenum silicides MoSi2 and Mo5Si3 using a mixture of elemental molybdenum and silicon powders at room temperature. The intermetallic compound MoSi2 have been obtained by ball milling of Mo33Si67 mixture powders for 100 h, which is transformed to sinlgle MoSi2 phase by subsequent heat treatment up to 725℃. The grain size of the MoSi2 powders thus obtained was 19 nm, being approximately four times smaller than that of the commercial alloy. The intermetallic compound Mo5Si3 with grain size of 30 nm have been also obtained by ball milling of Mo62Si38 mixture powders for 500 h, which is transformed to single Mo5Si3 phase by heating up to 1000℃. The finer grain size in the ball-milled molybdenum silicides powders is expected to improve room-temperature mechanical properties for high-temperature structural materials. |
| 저자 |
Sun Keun Kim and Chung Hyo Lee |
| 소속 |
Department of Advanced Materials Science and Engineering |
| 키워드 |
mechanical alloying; molybdenum silicide; intermetallic compound; crystal structure; finer grain size; X-ray diffraction
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| E-Mail |
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