氮基气氛渗碳中的内氧化研究  

Research on internal oxidation in nitrogen-basedcarburizing atmosphere

作　　者：庄军[1] 华公平[1] 余奇平 

机构地区：[1]中国南车集团戚墅堰机车车辆工艺研究所,江苏常州213011 [2]法国国际验船协会,上海200031

出　　处：《机车车辆工艺》2003年第1期7-10,共4页Locomotive & Rolling Stock Technology

摘　　要：对20CrMnMo钢在氮基渗碳气氛中进行了不同阶段的内氧化试验,并从热力学和动力学角度对试验结果进行了讨论,指出内氧化大部分发生在保温渗碳阶段,提高碳势有利于减轻内氧化;对深层渗碳,可采用渗后处理减轻内氧化。Internal oxidation experiment has been carried out on 20CrMnMo steel at different stages in the nitrogenbased carburizing atmosphere, and the experiment result has been discussed in terms of thermal mechanics and dynamics. It is pointed out that internal oxidation took place mostly at heatholding carburizing stage, and it is helpful to reduce internal oxidation by increasing carbon potential. As for indepth carburizing, postcarburizing treatment can be used to reduce internal oxidation. 

关 键 词：氮基气氛 渗碳 内氧化 碳势 

分 类 号：TG156.8[金属学及工艺—热处理]