Al_2O_3/(Ag_(72)Cu_(28))_(97)Ti_3/Ti-6Al-4V界面结构及性能研究  

Interface Structure and Formation Mechanism of Al_2O_3/(Ag_(72)Cu_(28))_(97)Ti_3/Ti-6Al-4V

作　　者：蒋成禹[1] 吴铭方[1] 于治水[1] 李敬勇[1] 

机构地区：[1]华东船舶工业学院,江苏镇江212003

出　　处：《稀有金属材料与工程》2001年第4期264-267,共4页Rare Metal Materials and Engineering

基　　金：国防船舶行业基金项目 ( 99J5 6.2 .2 )

摘　　要：在 1.8 ks,10 73 K～ 1173 K条件下对 Al2 O3/ ( Ag72 Cu2 8) 97Ti3/ Ti- 6Al- 4 V进行了钎焊试验。通过扫描电镜、波谱、能谱、X射线衍射对界面结构进行了分析。小于 112 3 K的界面结构为 Al2 O3/ Cu2 Ti4 O/ Cu4 Ti3/ Ag- Cu共晶 +富 Ag相 + Ti固溶体 ;1173 K的界面结构为 Al2 O3/ Cu3Ti O5+ Cu Al2 O4 / Cu4 Ti3/富 Ag相。采用拉剪试验测试了接头剪切强度。在 1.8ks,112 3 K时剪切强度最高达到 189MPa,大于或小于 112 3 K接头强度呈下降趋势。The Al2O3 ceramics was bonded with Ti-6Al-4V using (Ag72Cu28)(97)Ti-3 as filler metal under the conditions of 1 073 k similar to1 173 K and 1.8 ks. The interface structure and formation mechanism of joints were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). It was found that the interface structure of diffusion-bonded joints is Al2O3/Cu2Ti4O/Cu4Ti3/Ag-Cu eutectic+rich Ag phase-I-Ti soild solution for bonding temperature below 1 123K. For bonding temperature of 1 173 K, the interface structure is Al2O3/Cu3TiO5 + CuAl2O4/Cu4Ti3/rich Ag phase. Strength of the Al2O3/(Ag72Cu28)(97)Ti-3/Nb joint reaches 189 MPa for bonding temperature of 1 123 K and 1.8 ks. The lower bonding temperature, or the higher bonding temperature, the lower strength of joints.

关 键 词：钎焊 界面结构 强度 氧化钛陶瓷 钛合金 

分 类 号：TG454[金属学及工艺—焊接]