【摘要】 相对于传统的Sn-Pb合金,无铅钎料在高温下对不锈钢的腐蚀性明显加强,从而造成波峰焊接设备的损坏。通过试验的方式,在450℃条件下将不锈钢材料、表面特殊氮化处理不锈钢、钛合金和铸铁浸入液态无铅钎料Sn-0.7Cu中720h,通过腐蚀界面的微观组织分析,研究了无铅钎料侵蚀不锈钢界面的机理以及几种材料的耐腐蚀性分析,从而为防止无铅钎料的腐蚀提供可靠的依据。更多还原

【Abstract】 For traditional Sn-Pb alloy, Lead-free solder rapidly corrades stainless steel, which destroy wave-soldering equipment. In this paper an experiment that stainless steel, surface special nitriding stainless steel, titanium and cast iron were immerged into lead free solder Sn-0.7Cu 720 hours at 450℃ was designed to analyze corrosion-resistance of several materials. Microstructures between lead-free and stainless steel interface were observed and the corrosion mechanism was analyzed, which affords reliable foundation for avoiding lead free solder corrosion.更多还原