Al_2O_3/Cu基复合材料与Nb的钎焊  

STUDY ON BRAZING OF Al_2O_3/Cu-BASE COMPOSITE AND Nb

作　　者：于治水[1] 吴铭方[1] 余春[1] 徐玉松[1] 

机构地区：[1]华东船舶工业学院,镇江市212003

出　　处：《焊接》2004年第3期36-38,共3页Welding & Joining

基　　金：江苏省重点实验室船舶先进制造技术资助

摘　　要：采用Ag-20Cu-5Ti对Al2O3/Cu基复合材料与Nb的钎焊性进行了初步探讨。研究表明,通过在钎料中加入活性元素Ti,可以减少和消除钎缝中的Al2O3颗粒,避免Al2O3颗粒在钎缝中的聚集,实现离子共价键Al2O3向类金属键TiO转化,从而提高钎缝基体与颗粒相之间的匹配性。the brazing-ability of Al2O3/Cu-base and Nb with Ag-20Cu-5Ti filler metal is studied. The results of this work show that through adding active element Ti to the filler metal, the A12 O3 grains in the brazing seam are decreased or e-liminated, and the concentration of A12O3 grains in the seam is avoided, the ionic covalent bond A12O3 is transformes to metallic bond TiO, so that the matching - ability of the brazing seam matrix and the grain phase is enhanced.

关 键 词：Al2O3颗粒弥散强化铜基复合材料 钎焊 铌 钎料 Al2O3/Cu 

分 类 号：TG454[金属学及工艺—焊接]