高体积比SiC_p/6063Al复合材料表面预置钛膜及真空钎焊分析  

Investigation on magnetron sputtering Ti film and vacuum brazing of SiCp/Al composites with high volume fraction

作　　者：王鹏[1] 李强[1] 高增[1] 程东锋 牛济泰[2] 

机构地区：[1]河南理工大学材料学院,焦作454000 [2]哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨150001

出　　处：《焊接学报》2015年第4期43-46,82+115,共6页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(51245008);河南省焦作市工业新材料科技项目(2010;49号)

摘　　要：以增强相体积比为60%的Si Cp/6063Al复合材料为母材,首先在母材上磁控溅射钛膜,然后在580℃保温40 min的条件下,采用Al-Si-Mg共晶钎料对复合材料进行真空钎焊.利用扫描电镜、EDS局部能谱分析和XRD衍射的方法对接头的界面组织及断口形貌进行了研究.结果表明,活性钛膜提高了钎料对母材的润湿性,钎焊过程中钎料与镀层、镀层与母材基体界面处均形成了过渡层,且钎料与Si C颗粒间形成致密连接,并在过渡层中发现了Ti C0.981新相.Ti film was magnetron-sputtered on SiCp /6063 Al composite substrate containing 60% SiC p,and then the SiC p /6063 Al composite was vacuum brazed with Al-Si-Mg foil asfiller metal at 580 ℃ for 40 min. The interfacial microstructure and fracture appearance were investigated by SEM,EDS and XRD. The results show that the Ti film could improve the wettability of filler materials onto the composite materials. Transition layers existed not only between filler and Ti film,but also between the base metal and Ti film. A new phase TiC 0. 981 was found in the interfacial layer,and sound bonding occurred between the filler material and SiC particles.

关 键 词：铝基复合材料 磁控溅射钛膜 真空钎焊 润湿性 

分 类 号：TG454[金属学及工艺—焊接] TB333[一般工业技术—材料科学与工程]