金刚石与磨料磨具工程Issue(3)：39-42,4.DOI:10.13394/j.cnki.jgszz.2014.3.0009
高温钎焊过程中 Ni-Cr 合金对金刚石磨粒静压强度的影响
Influences of Ni-Cr alloy on static compressive strength of diamond grains in high temperature brazing
摘要
Abstract
Brazed diamond samples with C type(Ni82 Cr7 Si4.5 B3 .1 Fe3)and E type(BNi7 6 Cr1 5 P9) brazing alloys were prepared by vacuum furnace heating.The brazability of diamonds under different conditions was evaluated by static compressive strength testing.Microstructure of the carbide on diamond surface and graphitization of the diamond were analyzed by scanning electron microscope (SEM) and laser Raman spectroscopy.Results showed that high brazing temperature had much smaller influence on diamond than chemical attack of brazing alloys did.Catalytic elements,Ni and Fe,and strong carbide forming element Cr,which led to a great degradation of diamond property,were the main reason why its static compressive strength decreased.We also found that the static compressive strength of brazed diamonds of different quality decreased in different degrees.关键词
钎焊金刚石/静压强度/石墨化Key words
brazing diamond/static compressive strength/graphitization分类
化学化工引用本文复制引用
郑炜,黄国钦,徐西鹏..高温钎焊过程中 Ni-Cr 合金对金刚石磨粒静压强度的影响[J].金刚石与磨料磨具工程,2014,(3):39-42,4.基金项目
国家科技支撑计划项目(2012BAF13B04) （2012BAF13B04）
国家自然科学基金项目(51105148) （51105148）
泉州市科技计划项目-重点项目(2013Z15)。 （2013Z15）
