摘要
在润滑油中添加硫（或磷）的化合物，可以提高其承载能力，防止摩擦面在工作中咬死或卡伤。机理在于使零件摩擦表面形成一层硫化亚铁薄膜，消除了因接触点焊接产生破坏的危险［１］，并能改善零件在磨合期间的抗擦伤性能。硫氮共渗法以渗氮和渗硫同时进行，不但可以赋予零...
A new kind of efficient sulfonitriding process has been studied by high frequency induction heating.The agent consists of urea,sodium thiosulffate pentahydrate and KBF 4.Having been treated at a temperature of 570℃ and a time of half an hour,for 38CrMoAl steel,porous layer and nitriding layer with over 0 1mm and with hardness over 1000HV 0.5 can be aquired.By means of X ray structure analyser and TEM,the exper imental results prove that the sulfonitriding layers consist mainly of FeS,Fe 3O 4 and Fe 2N phases,and the penetration depth of sulphur can't exceed 50μm.The sulfonitriding layer possesses good wear and thermal fatigue resistance.
基金
山东省教委资助研究项目
关键词
感应加热
硫氮共渗
渗氮
induction heating,\ sulfonitriding,\ wear,\ thermal fatigue
