| 摘要: |
| 以增强相体积比为60%的SiCp/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SiC颗粒间形成致密连接,并在过渡层中发现了TiC0.981新相. |
| 关键词: 铝基复合材料 磁控溅射钛膜 真空钎焊 润湿性 |
| DOI： |
| 分类号: |
| 基金项目: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) |
|
| Investigation on magnetron sputtering Ti film and vacuum brazing of SiCp/Al composites with high volume fraction |
|
WANG Peng1, LI Qiang1, GAO Zeng1, CHENG Dongfeng1, NIU Jitai2
|
|
1.School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;2.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
|
| Abstract: |
| Ti film was magnetron-sputtered on SiCp/6063Al composite substrate containing 60% SiCp, and then the SiCp/6063Al composite was vacuum brazed with Al-Si-Mg foil as filler 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 TiC0.981 was found in the interfacial layer, and sound bonding occurred between the filler material and SiC particles. |
| Key words: aluminum matrix composite magnetron sputtering Ti film vacuum brazing wettability |
