摘要
钎焊料的选择对钎焊效果和钎焊接头质量具有重要影响.用于钛及钛合金钎焊的钎料可分为银基钎料、钯基钎料、铝基钎料、钛基钎料 4 大类.分别介绍了这 4 类钎料的特点,其中钛基钎料是钛及钛合金钎焊连接以及与其他材料钎焊连接的最佳选择,具有润湿性能好、耐腐蚀性好、高温强度高等特点.系统阐述了钛基钎料钎焊钛及钛合金以及钛及钛合金与C/C复合材料、不锈钢、陶瓷等材料钎焊的研究进展,重点介绍了钎焊接头的界面结构以及最佳钎焊工艺下钎焊接头的抗剪强度,最后展望了钛及钛合金钎焊技术的发展方向.
Abstract
The choice of brazing metal has an important impact on the brazing effect and brazing joint quality.The brazing metal used for titanium and titanium alloy brazing can be divided into four categories:silver-based brazing metal,palladium-based brazing metal,aluminum-based brazing metal,and titanium-based brazing metal.The characteristics of these four types of brazing metals are introduced,among which titanium-based brazing metal is the best choice for brazing connecting materials of titanium and titanium alloys and brazing connections with other materials,and has the characteristics of good wetting performance,good corrosion resistance and high temperature strength.This paper systematically reviews the research progress of the brazing of titanium and titanium alloys,as well as the brazing of titanium and titanium alloys with C/C composites,stainless steel,ceramics and other materials when titanium-based brazing metal is used as brazing material,focusing on the interface structure of brazed joints and the shear strength of brazed joints under the optimal brazing process,and finally looks forward to the future development direction of titanium and titanium alloy brazing technology.
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