CeO_2对镍基金属陶瓷复合层组织和耐腐蚀性能的影响  

Effects of CeO_2 on Structure and Corrosion Resistance of Ni-based Metal Ceramic Coatings

作　　者：赵涛[1] 蔡昇 王顺兴[2] 郑世安[2] 

机构地区：[1]上海交通大学教育部高温材料与高温测试开放实验室,上海200030 [2]洛阳工学院材料工程系,河南洛阳471039

出　　处：《金属热处理》2001年第2期1-3,共3页Heat Treatment of Metals

摘　　要：利用 5kWCO2 激光器在 5Cr2 1Mn9Ni4N不锈钢基体表面成功熔覆了含不同CeO2 量的镍基金属陶瓷复合层。研究了稀土氧化物CeO2 对激光熔覆金属陶瓷复合层显微组织形态和耐腐蚀性能的影响 ,发现稀土氧化物CeO2 能加速碳化钨颗粒的溶解 ,促使钨与铬形成金属间化合物 ;激光熔覆镍基金属陶瓷复合层的耐硫酸腐蚀能力显著优于 1Cr18Ni9Ti不锈钢 ;且含 0 5 %CeO2 (质量分数 )的激光熔覆层的耐腐蚀能力比含 1 5 %CeO2 (质量分数 )和不含CeO2The Ni based metal ceramic coatings on the surface of 5Cr21Mn9Ni4N stainless steel were clad by a 5kW CO 2 laser.The effects of CeO 2 on structure and corrosion resistance of laser clad Ni based metal ceramic coatings were investigated.The studies revealed that CeO 2 could accelerate the dissolution of tungsten carbide particles and made the formation of Cr W intermetallic compound.Compared with steel 1Cr18Ni9Ti,the corrosion resistance of the laser clad Ni based metal ceramic coatings was raised remarkably and the corrosion resistance of the coatings with 0 5wt% CeO 2 was better than that of the coatings with 1 5wt% CeO 2 and without CeO 2.

关 键 词：二氧化铈 激光熔霞 耐蚀性 组织 镍基金属陶瓷复合层 

分 类 号：TG156.99[金属学及工艺—热处理] TG174.453[金属学及工艺—金属学]