微波诱发热爆法制备钛铝碳结合剂金刚石复合材料  

Preparation of titanium-aluminum-carbon bond diamond composite material by microwave-induced thermal explosion

作　　者：代振 张旺玺[2] 梁宝岩[2] 杨黎[3] DAI Zhen;ZHANG Wangxi;LIANG Baoyan;YANG Li(School of Energy and the Environment, Zhongyuan University of Technology, Zhengzhou 450007, China;Materials and Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou 450007, China;School of Metallurgical and Energy Engineering, Kunming University of Science and Technology,Kunming 650093, China)

机构地区：[1]中原工学院能源与环境学院,郑州450007 [2]中原工学院材料与化工学院,郑州450007 [3]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《金刚石与磨料磨具工程》2021年第2期4-8,共5页Diamond & Abrasives Engineering

摘　　要：采用Ti、Al、石墨和金刚石粉体为原料,通过微波诱发热爆法制备钛铝碳结合剂/金刚石复合材料,研究金刚石质量分数和颗粒平均尺寸对复合材料物相组成、显微形貌及磨耗比的影响。结果表明:在N2气氛下,原料粉末发生热爆反应,可生成Ti2AlC、Ti3AlC2、TiC、TiN、AlN和Al3Ti相。当采用较低的金刚石质量分数或较大的金刚石颗粒平均尺寸时,产物钛铝碳含量较多,同时基体与金刚石的界面结合较致密;随着金刚石的质量分数或颗粒平均尺寸增加,试样的磨耗比显著增大;当金刚石(170/200)的质量分数为30%时,试样的磨耗比达到53.8。较高的金刚石质量分数或较大的颗粒平均尺寸都可促进复合材料的磨削性能显著改善。Using Ti,Al,graphite and diamond powder as raw materials,the titanium-aluminum-carbon bond/diamond composite material was prepared by the microwave-induced thermal explosion method,and the effect of diamond content and particle size on the phase composition and microscopic morphology of the composite material was studied.The results show that under a nitrogen atmosphere,the raw material powder undergoes thermal explosion reaction,which can generate Ti2AlC,Ti3AlC2,TiC,TiN,AlN and Al3Ti phases.When a lower diamond content or a thicker diamond is used,it is easy to obtain more titanium,aluminum,and carbon content in the product,and the interface between the matrix and the diamond is denser.The content and particle size of diamond have a significant effect on the wear ratio performance of composite materials.With the increase of diamond content or particle size,the wear specific properties of the samples increased significantly.When the mass fraction of diamond(170/200)is 30%,the wear ratio of the sample reaches 53.8.Higher diamond content or coarser particle size can promote the significant improvement of the grinding performance of the composite material.

关 键 词：钛铝化合物 金刚石 自蔓延高温反应 

分 类 号：TG73[金属学及工艺—刀具与模具]