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《Diamond & Abrasives Engineering》 2014-05
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Coating with Al_4C_3 film on the surface of diamond by self-propagation high temperature sintering (SHS)

WANG Yan-zhi;LIANG Bao-yan;ZHANG Wang-xi;LIU Jia-lin;School of Materials and Chemical Engineering,Zhongyuan University of Technology;  
Al-TiC boned diamond composites were fabricated by self-propagation high temperature sintering(SHS)from Ti/Al/Graphite/Diamond powders.The samples were analyzed by XRD,SEM with EDS.The results show that Al-TiC boned diamond composites were obtained by SHS.The main phases of the products were Al,TiC and diamond by SHS from every raw material.Meanwhile,the Al4C3 coating was formed on the face of diamond.When Al mass fraction was higher(80%),Al4C3 coating had a fine organization with a size of1-5μm.With Al mass fraction decreasing to 60%,Al4C3 organization became coarse.Meanwhile,many bud shaped precipitates with a size of 5-20μm formed on the coatings.But as Al mass fraction decreased to 40%,diamonds were easily broken because of its graphitization.
【Fund】: 河南省基础与前沿技术研究计划(132300410164);; 河南省省院科技合作项目(122106000051 142106000193);; 河南省教育厅自然科学研究计划(12A430024 13A430128 14A430007)项目资助
【CateGory Index】: TQ163
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