38CrMoAlA 和 40CrNiMoA 钢的临界氮势  

Critical Nitrogen Potential of 38CrMoAlA and 40CrNiMoA Steel

作　　者：席守谋[1] 汪山[1] 张建国[1] 

机构地区：[1]西北工业大学

出　　处：《材料工程》1998年第2期41-43,共3页Journal of Materials Engineering

摘　　要：本文用钢箔称重法测量确定炉气氮势，用３８ＣｒＭｏＡｌＡ和４０ＣｒＮｉＭｏＡ钢的薄片进行饱和渗氮，根据金相组织中是否出现网状氮化物或白亮层组织，确定了两种钢在５１５℃气体渗氮时临界氮势均在０．３２％Ｎ～０．３９％Ｎ之是。In the paper, the weight gain method are used to measure nitrogen potential in ammonia atmosphere The critical nitrogen potential without net nitride or white layer in the micro section of 38CrMoAlA and 40CrNiMoA steel are between 032%N～039%N when the piece of steel are saturatly intrided at 515℃ in 15h

关 键 词：氮化 氮势 氨分解率 合金钢 表面处理 临界氮势 

分 类 号：TG161.82[金属学及工艺—热处理]