低温稀土硼共渗研究  

Study on the Low Temperature Powder Re boronizing

作　　者：许伯藩[1] 张文峰[1] 张全萍 张细菊[1] 

机构地区：[1]武汉科技大学材料与冶金学院,武汉430081

出　　处：《武汉科技大学学报》2000年第1期18-21,共4页Journal of Wuhan University of Science and Technology

摘　　要：研究了钢在添加稀土氧化物 L a2 O3,于低温 (A1相变点以下 )下进行固体稀土硼共渗的工艺及渗层的组织与性能。探讨了稀土对低温渗硼的催渗作用。结果表明 ,低温稀土硼共渗 ,可使钢件表面获得实用的渗硼硬化层。与单一渗硼相比 ,稀土硼共渗后渗层的硬度、耐蚀性显著提高 ,而脆性明显下降。The technique,structure and properties of rare earth boronizing under A 1 temperature (low temperature)are studied by adding La 2O 3. The action mechanism of rare earth element on re boronizing under A 1 temperature is also discussed.The results show that functional layer can be obtained on the surface of steel with low temperature rare earth boronizing.The addition of an appropriate amount of rare earth element can obviously increase the hardness and corrosion resistance of penetrated layer, and decrease its brittleness in comparision with the case of boronizing.

关 键 词：稀土硼共渗 低温 氧化镧 渗层 硬度 耐蚀性 

分 类 号：TG156.87[金属学及工艺—热处理]