微量元素对ZA27合金腐蚀及老化性能的影响

Influence of Trace Elements on the Corrosion-Resisting and Aging Properties of ZA27 Alloy

ZA27合金是目前国内外发展迅速的新型材料。它具有优良的机械性能、耐磨性能和机械加工性能。该合金利用其价廉的优势,主要用于代替昂贵的青铜合金制作耐磨件。但ZA27合金与传统的锌合金一样,也有腐蚀和老化现象,这种现象历来是人们关注的问题,但迄今为止,其机理尚不清楚,也没能提出防止老化的根本措施。本文在研究ZA27于不同介质中的耐蚀性和人工时效时机械性能变化的基础上,探讨了微量Sn,Pb和RE元素对该合金腐蚀及老化性能的影响。

The corrosion-resisting and mechanical properties of ZA27 alloy are analyzed under different media and artificial aging coditions. It is studied that trace elements influence on the corrosion-resisting and aging properties. The results indicated that tin and lead decrease significantly properties of (?)7 alloy, rare-earth elements increase those of alloy.