Abstract
High content Sip/Al composites were fabricated by pressureless infiltration. The statics of infiltration process were analyzed. It is indicated that aluminum melting liquid can infiltrate silicon loose packing porous perform because it conforms to the requirements of statics. The dynamics process that aluminum melt liquid infiltrates silicon loose packing porous preform was analyzed by resistant measurement method at real time. The results show that an approximate parabola curve of infiltration depth versus infiltration time is proved. It is indicated that the main mechanisms of continuous netlike Si phase are dissolution-deposition and appendiculate deposition of Si. The form-mechanism of few fine pores in the microstructure was investigated. The interface of Sip/Al phases is clean and no reactants exist.
Original language | English |
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Pages (from-to) | 1822-1827 |
Number of pages | 6 |
Journal | Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals |
Volume | 14 |
Issue number | 11 |
State | Published - Nov 2004 |
Keywords
- Pressureless infiltration
- Si/Al composites
- Thermal management material