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| PROPOSAL OF STRUCTURE FORMATIONIN SELFPROPAGATING HIGH TEMPERATURE SYNTHESIS OF TiB_2-xAl COMPOSITES |
| FU Zhengyi;WANG Weimin;WANG Hao;YUAN Runzhang(Wuhan University of Technology);MUNIR;Zuhair A.(University of California;Davis; USA) |
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Cite this article:
FU Zhengyi;WANG Weimin;WANG Hao;YUAN Runzhang(Wuhan University of Technology);MUNIR;Zuhair A.(University of California;Davis; USA). PROPOSAL OF STRUCTURE FORMATIONIN SELFPROPAGATING HIGH TEMPERATURE SYNTHESIS OF TiB_2-xAl COMPOSITES. Acta Metall Sin, 1994, 30(20): 373-378.
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Abstract Effect of of Ti or B particle size on the combustion temperature and propa gating rate in the self—propagating high temperature synthesis(SHS) process of TiB_2-xAl composites has been investigated.The size change of Al particles,which does not directly enter into the chemical reaction as Ti and B,may be much less influential to the SHS process.But the molten Al, formed during reaction, may retard the growth of TiB_2grains. Thus, the structure of SHS product can be controlled.By means of combustion front quenching (CFQ) with copper wedge, the structure formation of TiB_2-xAl composites in the SHS process was discussed
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| 1傅正义,袁润章,MunirZA．金属学报,1993;29:B3342MerzhanovAG．PureApplChem,1992;64:9413RogachevAS,MukasyanAS,MerzhanovAGDoklAkadNaukSSSR,1987;297:14254FuZY,WangWM,WangH,YuanRZ．PACRIMMeetingProceed,Hawaii,USA,1993:1425YuanRZ,FuZY,YangZL,MunirZA．JMaterSynthProcess,1993;1:153 |
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