| 연소합성법에 의한 발열성 다공질 MoSi2계 재료의 제조 |
| 송인혁, 윤중열, 김해두 |
| 한국기계연구원 재료연구부 |
| Fabrication of Porous MoSi2 material for Heating Element through Self-propagating High Temperature Synthesis Process |
| In-Hyuck Song, Jung-Yeul Yun, Hai-Doo Kim |
| Department of Materials Engineering, Korea Institute of Machinery & Materials |
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| ABSTRACT |
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In this study, 논 process has been employed to fabricate porous $MoSi_2$ material with electric-resistive heating capability through the control of pore size. The preform for SHS reaction was consisted of molybdenum powder with different sizes and silicon powder with different contained quantity. The size of the $MoSi_2$ particles thus formed was determined by the generated heat of combustion, not by the size of molybdenum powder. However, the pore size of $MoSi_2$ composite was proportional to the particle size of molybdenum powder. that is the coarser the molybdenum powder used, the larget the formed pore size. Based on these results, the porous $MoSi_2$ composite could be fabricated with a desired pore size. By orienting the porous molybdenum disilicide-based material in the form of pore size gradient, porous materials used for filters with improved dirt-holding capacity can be manufactured. 耀 Ѐ က |
| Key words:
SHS, $MoSi_2$, Heating element, Porous material |
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