...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Manufacturing Processes >Influence of diffusion brazing parameters on microstructure and properties of Cu/Al joints
【24h】

Influence of diffusion brazing parameters on microstructure and properties of Cu/Al joints

机译：扩散钎焊参数对Cu / Al接头组织和性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The purpose of this article was to produce a sound Cu/Al joint by controlling interfacial inter-metallic compounds (IMCs) using suitable diffusion brazing parameter. An Al-8Si-4Cu-2Mg-1Ga-0.05Ce interlayer was used to diffusion braze copper to aluminum at a temperature above eutectic temperature and below melting point of aluminum under medium brazing pressure. The brazing pressure excludes eutectic structure and leaves a thin Cu9Al4/CuAl2 interfacial reaction layer in the joint. A short brazing time is enough to form a thin IMCs layer. However, increasing brazing time leads the rapid growth of CuAl2 and then results in some voids in the joint, which decreases the joint properties. It is not enough for a low brazing temperature to achieve a metallurgical bonding due to lack diffusion of atom. But, high brazing temperature results in excessive growth of IMCs, which is detriment to the bonding strength. The tensile strength and the bend ductility of Cu/Al joint diffusion brazed at 600 degrees C for 2 s under 9 MPa are equal to that of aluminum base metal and its conductivity is superior to that of aluminum base metal. Diffusion brazing with liquefaction in air can produce a sound Cu/Al joint both in mechanical and electrical properties.
机译：本文的目的是通过使用合适的扩散钎焊参数控制界面金属间化合物（IMC）来产生良好的Cu / Al接头。使用Al-8Si-4Cu-2Mg-1Ga-0.05Ce中间层在中等钎焊压力下，在高于共晶温度且低于铝熔点的温度下，将铜扩散到铝中。钎焊压力排除了共晶结构，并在接头中留下了一层薄的Cu9Al4 / CuAl2界面反应层。短的钎焊时间足以形成薄的IMCs层。但是，增加钎焊时间会导致CuAl2快速生长，然后在接头中产生一些空隙，从而降低接头性能。由于缺乏原子的扩散，低钎焊温度不足以实现冶金结合。但是，高的钎焊温度导致IMC的过度生长，这不利于粘结强度。在9 MPa下于600摄氏度下钎焊2 s的Cu / Al接头扩散焊的拉伸强度和弯曲延展性与铝基金属相同，并且其导电性优于铝基金属。在空气中液化的扩散钎焊可在机械和电气性能方面产生良好的Cu / Al接头。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号