摘要
试验选用Al-11Si-0.3Cu、Al-11Si-4Cu和Al-11Si-10Cu三种铝基钎料,利用SDTQ600型差示扫描量热仪、Phillips X'Pert型X射线衍射仪和OLYMPUS型光学显微镜等分析Cu含量对钎料性能的影响。研究表明,三种钎料的基本组织为:基体α(Al)、共晶硅(α+Si)和少量初生硅;随着Cu含量的增加,Cu与Al之间形成的金属间化合物相的含量增加,钎料硬度随之增加。钎料熔化特性曲线表明,增加Cu含量能有效降低钎料的熔点,并使钎料凝固温度区间变窄。腐蚀试验表明随Cu含量的增加钎料腐蚀率增加。钎料的铺展面积受Cu饱和程度的影响,当Cu含量低于其在Al中溶解度时,随Cu含量增加,铺展面积增大;反之,铺展面积减小。
Three components of aluminum brazing were used for experiment,including Al-11Si-0.3Cu,Al-11Si-4Cu and Al-11Si-10Cu,and on the influence that the performance of brazing was by Cu content analyzed by SDTQ600 type Differential Scanning Calorimeter DSC,Phillips X＇Pert type X-ray diffraction and OLYMPUS type Optical Microscope.Research showed that the basic organization was composed of matrix α（Al）,eutectic silicon（α ＋ Si） and a few primary silicon for three kinds of aluminum brazing;with the Cu elements increased,the intermetallic phase formed between Cu and Al between content increased,solder hardness increased.Melted characteristic curve of brazing showed that the content of Cu elements increased could effectively reduce the melting point of brazing,and make solidification temperature interval of brazing narrow.Corrosion test suggested that with the content of Cu increased,corrosion rate of brazing increased.Spreading area of brazing was dependent on the influence of Cu saturated degree,when Cu content was lower than its solubility in the Al,with Cu content increased,spreading area increased;conversely,the reverse.
出处
《电焊机》
北大核心
2012年第3期36-38,共3页
Electric Welding Machine
关键词
CU含量
铝基钎料
钎料性能
Cu content
aluminum brazing
properties of brazing
