合金元素对稀土低合金耐蚀铸铁耐碱蚀性的影响  

Effect of Alloy Elements on the Alkali-Corrosion Resistance of Rare Earth Low Alloy Cast Iron

作　　者：许萍[1] 董俊慧[1] 李进福[1] 

机构地区：[1]内蒙古工业大学材料学院,内蒙古呼和浩特010051

出　　处：《铸造技术》2008年第6期782-785,共4页Foundry Technology

摘　　要：为了获得具有优良耐碱蚀的低合金铸铁，采用正交法，研究了镍、铬、铜及稀土硅铁舍金加入量对铸铁耐蚀性的影响，并采用失重法测定材料的腐蚀速率。结果表明，以上4因素中对所研究的低合金铸铁耐碱蚀性能的影响最大的是RE-Si，最小的是Cr。含Ni1.5％，Cr0.5％，Cu2,0％，RE-Si0.3％～0.5％的合金铸铁，其耐蚀性最好，腐蚀率为1.074×10^-3mm／a。In order to obtain low alloy cast with excellent alkali-corrosion resistance, the effect of nickel, chromium, copper and rare earth addition on the alkali-corrosion resistance of low alloy cast iron was studied through orthogonal experiment method, and the corrosion rates are tested by weighloss. The results show that RE-Si and Cr have the largest and the least effects on the alkali-corrosion resistance of low alloy cast iron respectively. The alloy cast iron containing 1.5%Ni, 0.5%Cr, 2.0%Cu and 0.3-0.5% RE-Si has the best corrosion resistance, its corrosion rate is about 1. 074 × 10^-3mm/a .

关 键 词：耐碱蚀 稀土 低合金铸铁 

分 类 号：TG174[金属学及工艺—金属表面处理]