【摘要】 采用合金化原理,在Zn9.3Al7Cu钎料基体中添加稀土LaNd,研究稀土LaNd对Zn9.3Al7Cu无铅钎料腐蚀性能的影响.结果表明,当LaNd添加量不超过0.3%时,随着LaNd添加量增加,Zn9.3Al7Cux LaNd钎料中弥散分布大量的耐蚀性较强的ε(CuZn5)相,钎料合金的腐蚀电位逐渐上升,抗腐蚀性增强;当LaNd添加量超过0.3%时,随着LaNd添加量增加,Zn9.3Al7Cux LaNd表面开始出现腐蚀坑,且腐蚀产物中O元素含量增加,钎料合金的腐蚀电位逐渐降低,耐腐蚀能力变弱.从Zn9.3Al7Cux LaNd钎料的腐蚀性能考虑,稀土LaNd的最佳添加量为0.3%.更多还原

【Abstract】 By using alloying principle,rare earth LaNd was added in the matrix Zn9.3Al7Cu solder to study the effects of La Nd on the corrosion resistance of Zn9. 3Al7Cu lead-free solder. The results showed that if the RE content was less than0. 3%,with the increase of RE content,the ε（ CuZn₅） phase which has strong corrosion resistance increased and dispersedly distributed,Zn9.3Al7CuxLaNd solder alloy corrosion potential increased,and then the corrosion resistance of solder increased.If the RE content was more than 0.3%,with the increase of RE content,some corrosion pits began to appear,the O content in corrosion products increased,Zn9.3Al7Cux La Nd solder alloy corrosion potential reduced,and then the corrosion rate of solder increased. 0. 3% is the best addition of La Nd standing on the point of corrosion resistance.更多还原