SHS技术在金刚石表面镀覆Ni-TiC复合涂层的研究  

Study on the self-propagation high temperature sintering of Ni-TiC-Diamond

作　　者：梁宝岩[1,2] 张旺玺[1,2] 史冬丽 穆云超[1] 

机构地区：[1]中原工学院材料与化工学院,郑州450007 [2]金刚石技术国家地方联合工程实验室,郑州451191 [3]白鸽磨料磨具有限公司超硬制品分公司,郑州450001

出　　处：《金刚石与磨料磨具工程》2016年第3期50-53,共4页Diamond & Abrasives Engineering

基　　金：河南省高校创新团队项目(15IRTSTHN004);河南省省院科技合作项目(142106000193);河南省教育厅自然科学研究计划项目资助(14A430007);河南省科技开放合作项目(142106000051);郑州市国际科技合作与交流项目(153PGJHZ209);郑州市人才引育项目(141PRCYY514)

摘　　要：采用Ni/Ti/石墨/金刚石粉体为原料,使用自蔓延高温烧结技术,合成了Ni-TiC结合剂金刚石复合材料。研究了金刚石含量和粒度对得到的试样的显微结构与物相组成的影响。研究结果表明:原料经自蔓延高温烧结后,产物主相为Ni、TiC和金刚石。当原料中物质的量比Ti∶C=1∶1时,无论金刚石粒度和含量如何调整,都很难在金刚石表面获得良好的涂层;只有当金刚石粒度较细时(20μm),才能在金刚石表面形成良好的涂覆。适当增加原料中Ti的含量,可以在金刚石表面形成比较均匀的Ni-TiC复合涂层,其中TiC晶粒大小约为1μm。Ni-TiC boned diamond composites are fabricated by self-propagation high temperature sintering（SHS）from Ni/TiC/graphite/diamond powders.Effect of diamond size and content on the microstructure and phase composition of obtained samples is studied.The results show that the main phases of the products are Ni,TiC and diamond by SHS.When mole ratio of Ti and C is 1∶1in the raw materials,it is difficult to obtain good coating on the surface of diamond by adjusting diamond content and size.Good coating can only be obtained when diamond size is finer（20μm）.Appropriate increasing Ti content in the raw materials may form uniform Ni-TiC complex coating on the surface of diamond.The size of TiC grains are about 1μm.

关 键 词：Ni-TiC 金刚石 自蔓延高温烧结 

分 类 号：TQ164[化学工程—高温制品工业]