低碳钢铬铝共渗层的显微组织及耐氧化性  

MICRO STRUCTURE AND ANTI OXIDATION OF CHRO ALUMINIZED LAYER OF LOW CARBON STEEL

作　　者：任旭芳[1,2] 刘晓伟 刘玉先[1,2] 

机构地区：[1]山东工业大学材料科学与工程学院 [2]山东省产品质量监督检验所

出　　处：《山东工业大学学报》1998年第2期179-181,共3页

基　　金：山东省自然科学基金

摘　　要：用光学显微镜、透射电镜和电子探针仪研究了渗层的显微组织、相结构及成分分布．结果表明，共渗剂成份为９３％Ｃｒ和７％Ａｌ时，经１１００℃×１６ｈ共渗后，渗层表面铬铝含量分别为１８％和８．２％，表层组织为（Ｃｒ，Ｆｅ）２３Ｃ６＋ＡｌＦｅ３Ｃ０．６９，里层为α－Ｆｅ（Ｃｒ，Ａｌ），渗层具有较高的耐高温氧化性和抗蚀性．In order to improve anti corrosion and anti oxidation properties of low carbon steel, the proccess of chro aluminizing was studied. The microstructure, phase structure and concentration profiles in co penetrated layer were observed with OM, TEM and EPMA. The experiment results show that the surface concentration of 18%Cr and 8.2%Al was used and the microstructures are (Cr,Fe) 23 C 6+AlFe 3C 0.69 and α Fe(Cr,Al) in surface layer and inner layer respectively. The chro aluminized layer has a high anti corrosion and anti oxidation property at elevated temperature.

关 键 词：低碳钢 渗铬 渗铝 耐氧化性 渗层 显微组织 

分 类 号：TG156.8[金属学及工艺—热处理]