Cr35Ni45Nb钢铝硅共渗涂层抗渗碳性能研究  

Study on Anti-carburizing Ability of Silicon-aluminizing Coating on Cr35Ni45Nb Steel

作　　者：徐啸[1] 赵建平[1] 

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816

出　　处：《热加工工艺》2016年第8期180-182,共3页Hot Working Technology

摘　　要：对乙烯裂解炉管材料Cr35Ni45Nb钢进行铝硅共渗处理。对处理后试样进行观察分析,渗层由渗剂残留组成的粘附层、互扩散层和连续白亮的渗层组成共渗。处理后基体硬度没有变化。对未进行铝硅共渗处理的试样渗碳处理,发现试样出现约40μm渗碳层,基体分布着碳化物颗粒。而铝硅共渗处理后的试样渗碳后,碳化物颗粒均分布在渗层,渗碳层硬度约为20μm,基体内无碳化物颗粒。因此铝硅共渗处理提升了材料的抗渗碳能力。Silicon-aluminizing treatement was applied to Cr35Ni45Nb steel for ethylene cracking furnace tube. The microstructure of silicon-aluminizing layer was analyzed. The layer consists of adhesive layer which is composed of infiltration agent residues, mutual diffusion layer and continuous white layer. Hardness of matrix has no change after silicon-aluminizing treatment. When non silicon-aluminizing sample was carburized, there was about 40um carburizing layer and carbide particles distributing on the matrix. When silicon-aluminizing sample was carburized, there was about 20 um carburizing layer and no carbide particles distributing on the matrix. Therefore, Silicon-aluminizing layer has good anti-carburizing property.

关 键 词：Cr35Ni45Nb 钢 铝硅共渗 抗渗碳性能 

分 类 号：TG174.445[金属学及工艺—金属表面处理]