【摘要】 Zn的活泼性使Sn 9Zn无铅钎料的润湿性和抗氧化性很差,在Sn 9Zn合金中加入适量混合稀土元素(Ce,La)可以改善其润湿性能。分别在245,260和290℃通过润湿平衡实验对钎料的润湿性进行了研究,并对RA,RMA,R和WWR4种不同钎剂进行了比较。结果表明:在运用活性松香钎剂时,微量混合稀土元素可以显著提高Sn 9Zn合金润湿性;而提高钎焊温度也可以改善润湿性能。更多还原

【Abstract】 The eutectic Sn9Zn alloy is one of the leadfree solder alloys at the present time. Since Zn is an active element in solder, the wetting and corrosion properties of Sn9Zn alloy are impaired. In order to improve the wetting behavior, trace rare earth elements were added into Sn9Zn alloy. The wetting balance tests were conducted in ambient air to reveal the wetting behavior. Several types of flux, i.e. RA, RMA, R and WWR, were used to study the wetting properties of the Sn9ZnRE alloy system at 245, 260 and 290 ℃, respectively. By using RA flux, the trace RE addition can improve the wetting behavior significantly and the increasing of the temperature can also improve the properties.更多还原