Al铸铁抗锌液腐蚀机制研究  

Effect of Aluminum on the Reaction Between Cast Iron and Liquid Zn

作　　者：齐育红[1] 马永庆[1] 张占平[1] 黑祖昆[1] 

机构地区：[1]大连海事大学,大连116026

出　　处：《材料工程》1999年第10期23-26,共4页Journal of Materials Engineering

基　　金：辽宁省自然基金

摘　　要：铸铁中加Ａｌ后，使得铸铁与锌液在５００～６００℃反应的化合物层由原来的柱状δ＋微薄的Γ相改变为块状δ＋Ｆｅ－Ａ１相．而且化合物层宽度显著增加。基体Ｆｅ的消耗主要由Ｆｅ原子通过化合物层的扩散所控制，因而显著提高了铸铁抗锌液腐蚀能力。随着Ａｌ含量增加，腐蚀速率降低，Ａｌ量为８．１％时其腐蚀性能比普通灰铸铁提高１０倍。After adding A1 into cast iron, structure of compound layer formed by reaction betweencast iron and liquid Zn at 500-600 C consists of bulk 8 +Fe-A1 phases instead of column δ＋Γphases, and the width of the compound layer increases obviously. The consumption of Fe in castiron is dominated by the difflusional speed of Fe through the compound layer, therefor, the corrosion rate of iron is greatly slowed up. The corrosion rate of iron decreases with the content ofAl In iron. The corrosion resistance of the cast iron with 8. 1 % A1 is ten times as high as that of ordinary cast iron.

关 键 词：锌液腐蚀 铝铸铁 铁铝相 

分 类 号：TG143.8[一般工业技术—材料科学与工程]