硅酸盐学报2011，Vol.39Issue(2)：343-348,6.
铜基钎料真空钎焊镀钛金刚石
Vacuum Brazing of Ti-Coated Diamonds with Cu-Based Alloy Powder
摘要
Abstract
Ti-coated diamond grits on steel substrate were brazed with Cu-10Sn-5Ti alloy powder as solder in vacuum. The influence of brazing temperature on the bond strength between diamond grits and steel substrate were investigated, and the effect of the Ti coating in brazing diamonds process was analyzed. The experimental results indicate that when the brazing temperature is 900-920 ℃,the metallurgic bond between diamond grits and brazing alloy and steel substrate is strong. Ｔhe Ti coating can protect the diamonds from thermal damage and graphitizing during brazing process, and the thermal toughness index of the Ti-coated diamonds under 900 ℃ decreases by only about 1.1％. The diamonds mainly occur micro-fracture and fracture in grinding process, and there are few diamonds pull-out during the grinding processing.关键词
镀钛金刚石/铜基钎料/真空钎焊/钎焊强度Key words
titanium-coated diamond/ copper based alloy powder/ vacuum brazing/ bond strength分类
矿业与冶金引用本文复制引用
邓朝晖,伍俏平,张荣辉,潘占..铜基钎料真空钎焊镀钛金刚石[J].硅酸盐学报,2011,39(2):343-348,6.基金项目
国家自然科学基金(50775069)资助项目. （50775069）
