高硅铸铁耐腐蚀性的研究  

Study on Corrosion Resistant of High Silicon Cast Iron

作　　者：余竹焕[1] 强军锋[1] 刘林[2] 李可青[3] 

机构地区：[1]西安科技大学材料科学与工程系,陕西西安710054 [2]西北工业大学凝固技术国家重点试验室,陕西西安710072 [3]西安理工大学材料学院,陕西西安710048

出　　处：《铸造》2006年第6期636-639,共4页Foundry

摘　　要：采用失重分析、金相分析等试验方法研究了高硅铸铁在不同环境下的耐腐蚀性能,并对高硅铸铁、普通灰铸铁及白口铸铁的耐腐蚀性进行比较。结果表明,高硅铸铁在各种腐蚀介质中均有良好的耐蚀性,腐蚀溶液的浓度对高硅铸铁的腐蚀速度有较大影响。因为硅的存在,高硅铸铁的耐蚀性明显优于普通灰铸铁和白口铸铁;而白口铸铁因其基体组织为Fe3C,在酸性溶液中的耐腐蚀性能又优于灰铸铁。Structure and corrosion behavior of the high silicon cast iron in several different environments have been tested by means of weight-loss analysis and metallograph, and compare the corrosion resistant of high silicon cast iron with common gray iron and white iron. Experiment indicated that the corrosion resistance of high silicon cast iron in different corrosion environments is superior, and there is great effect of the corrosion solution concentration on corrosion velocity. Because of the silicon, the corrosion resistance of high-silicon cast iron is obviously superior to common gray iron and white iron, and the structure of white iron is carbon compound and its corrosion resistance is better than gray iron in acid solution.

关 键 词：高硅铸铁 灰铸铁 白口铸铁 耐腐蚀性 金相分析 失重 

分 类 号：TG113.231[金属学及工艺—物理冶金]