真空感应钎焊单层金刚石砂轮的实验研究  

Experimental Investigation on Induction Brazing of Monolayer Diamond Grinding Wheel with Ni-CrAlloy under vacuum Atmosphere

作　　者：武志斌[1] 肖冰[1] 徐鸿钧[1] 

机构地区：[1]南京航空航天大学机电工程学院,南京210016

出　　处：《航空精密制造技术》2001年第1期18-21,共4页Aviation Precision Manufacturing Technology

基　　金：国家自然科学基金资助项目!(59675057)

摘　　要：在真空条件下用Ni-Cr合金做钎料进行了钎焊单层金刚石砂轮的实验研究，实现了金刚石与钢基体间的牢固化学冶金结合。通过扫描电镜X射线能谱，结合X射线衍射结构分析，发现Ni-Cr合金中的Cr原子与金刚石表面的碳原子反应生成稳定连续的Cr3C2膜，在钢基体结合界面上生成（FexCry）C，这是实现合金层与金刚石及钢基体之间都有较高结合强度的主要因素。通过磨削实验验证了金刚石确实有较高的把持强度。An experimental investigation is made on induction brazing of monolayer diamond grinding wheel with Ni-Cr alloy as solder under vacuum atmosphere. As a result, the strong bonding between diamond and steel is obtained, while the filled intermediate layer material is reactive Ni-Cr alloy slice. With the observation by scanning microscope, the composition analysis by X-ray energy spectrum and the structure analysis by X-ray diffractometer, it is shown that it is the continuous stable chromium carbide film formed on the interface between the diamond and the filled intermediate layer, and the (FexCry) C layer on the interface between steel surface and the filled intermediate layer that cause the better bonding strength. Finally, a grinding test proves the correctness of the investigation result.

关 键 词：钎焊 金刚石 单层砂轮 

分 类 号：TG454[金属学及工艺—焊接]