W基串珠胎体配方的实验研究  

Research on the formulation of W-based bead matrix

作　　者：闫海芸[1] 张顺林[1] 郭桦[1] 

机构地区：[1]脆性材料加工技术教育部工程研究中心华侨大学,厦门361021

出　　处：《金刚石与磨料磨具工程》2013年第3期31-35,共5页Diamond & Abrasives Engineering

基　　金：国家自然科学基金(51175193);长江学者与创新团队发展计划(IRT1063);福建省科技计划项目(2010I0009)

摘　　要：通过正交实验设计和分析,配合相应的工艺条件,并通过电子显微镜(SEM)和电子探针(EMPA)等分析工具,研究了不同活化元素对W基胎体性能的影响以及胎体对金刚石的把持情况。结果表明:通过添加Fe、Ni、Sn等活化金属,可以使W基胎体的烧结温度降低到1 000℃以下,其中Ni和Fe元素的含量对W基胎体的致密度有显著影响,Fe元素含量的变化对胎体硬度有较显著影响;胎体中的W与金刚石发生化学冶金结合,较Co基胎体相比,提高了胎体对金刚石的包镶能力。The effects of different activating elements to the W-based matrix properties,as well as the matrix reaction to the diamond,are investigated by orthogonal experiments under the correlating processing conditions,together with the analysis of SEM and EMPA.Results show that the sintering temperature could be reduced to below 1 000 ℃ due to adding Fe,Ni and Sn.The amount of Ni and Fe will significantly influence the efficiency of compactness of the W-based matrix,the amount of Fe will also largely change the hardness of the matrix.W and diamond in the matrix will be combined chemically and metallurgically,which enhances the cladding ability to diamonds compared with Co-based matrix.

关 键 词：W基结合剂 活化烧结 正交设计 化学结合 

分 类 号：TQ164[化学工程—高温制品工业]