弧光气化法Cr－Mo共渗研究

Cr Mo PENETRATING LAYER MADE BY ARC LIGHT GASIFYING PROCESS

采用增强型放电结构实现的弧光气化法，在碳钢基体上进行等离子体Ｃｒ－Ｍｏ共渗．对渗层成分、晶体结构和组织形貌进行了Ｘ射线衍射和电子探针分析及扫描电镜观察．试验表明，在小于１０００Ｖ，１０００～１０５０℃和３～５ｈ条件下，渗层厚度达２００～２５０μｍ，渗速为５０～６０μｍ／ｈ，优于常见的二极或三极热溅射法．

Cr Mo plasma penetrating layers on low and medium carbon steels are built up by an arc light gasifying process with enhanced discharging structure.Diffraction X ray,electronic probe and scanning electronic microscope are used to analyze the compositions,crystal structures and morphology.The test results show when the voltage is less than 1000V,the temperature is from 1000 to 1050℃,and the duration is 3～5h,the thickness of the penetrating layers ranges from 200 to 250μm,and the penetrating speed from 50 to 60μm/h,which is superior to the common sputtering method of double or three electrodes.