复合钎料钎焊Si_(3)N_(4)陶瓷/0Cr19Ni9钢接头的界面组织及力学性能研究  

Interfacial Microstructure and Mechanical Properties of Si_(3)N_(4) Ceramic/0Cr19Ni9 Steel Joint Brazed with Composite Filler Metal

作　　者：蔡淑娟 陈宇红[1] 朱新杰 CAI Shujuan;CHEN Yuhong;ZHU Xinjie(State Key Laboratory of Powder Materials and Special Ceramics,North Minzu University,Yinchuan 750000,China)

机构地区：[1]北方民族大学粉体材料与特种陶瓷国家重点实验室,宁夏银川750000

出　　处：《热加工工艺》2021年第11期51-54,共4页Hot Working Technology

基　　金：宁夏高校项目(NGY2018-138);宁夏自然科学基金项目(2018AAC03123);宁夏重点研发项目(2018YBZD1366)。

摘　　要：采用TiNp颗粒增强银铜基复合钎料作为焊缝填充材料,在1180 K温度下真空钎焊,实现了氮化硅陶瓷和0Cr19Ni9不锈钢的有效连接,获得了界面结合良好且无孔洞、裂纹的接头。通过向钎料中添加合金元素Ti、Ni,促进了钎料与Si_(3)N_(4)、0Cr19Ni9之间的界面反应,同时生成的TiC、TiN粒子又可作为增强体。接头组织为:Si_(3)N_(4)/TiNp+Ni N+Ti_(5)Si_(3)+Cu Ni_(8)Ti_(3)/Cu(s.s)+Ag(s.s)+TiNp/Ni_(3)Ti_(4)+Fe_(2)Ti/0Cr19Ni9。当钎焊保温时间为15 min时,接头界面的过渡层厚度较大,接头成形良好,剪切强度达到157 MPa。TiNpparticle reinforced silver and copper based composite filler was used as filler material,the effective connection between Si3N4ceramic and 0Cr19Ni9 stainless steel was realized by using vacuum brazing at 1180 K,and the joint with good interface,no hole and crack was obtained.The interface reaction between the brazing filler and Si_(3)N_(4),0Cr19Ni9 can be promoted by adding the alloy elements Ti and Ni into the brazing filler,and the generated Ti C and TiN particles can also be used as reinforcement.The interfacial structure of the joint is Si_(3)N_(4)/TiNp+Ni N+Ti_(5)Si_(3)+Cu Ni_(8)Ti_(3)/Cu(s.s)+Ag(s.s)+TiNp/Ni_(3)Ti_(4)+Fe_(2)Ti/0Cr19Ni9.When the brazing time is 15min,the thickness of the transition layer at the interface of the joint is bigger,the joint is well formed,and the shear strength reaches 157 MPa.

关 键 词：Si_(3)N_(4)陶瓷 钎焊 复合钎料 剪切强度 

分 类 号：TG454[金属学及工艺—焊接]