45钢低温电解渗硫表面摩擦性能的研究  

A Study on Friction and Wear Behavior of Low Temperature Electrolytic Sulphurizing Surface of 0.45C Steel

作　　者：刘瑶[1] 张红霞[2] 朱远志[1] 

机构地区：[1]武汉科技大学材料与冶金学院材料加工工程系,武汉430081 [2]湖北汽车工业学院材料工程系,十堰442002

出　　处：《特殊钢》2013年第2期35-37,共3页Special Steel

基　　金：湖北省教育厅重点项目(D2010005)

摘　　要：采用75%KSCN+25%NaSCN+0.9%K_3Fe(CN)_6+0.1%K_4Fe(CN)_6+2.5%NH_4SCN的盐浴,45钢为正极,高铬不锈钢为负极,190℃±5℃,1 V电压,20 min低温电解表面渗硫方法,在45钢表面形成10μm FeS渗层,并且用M-2000型磨损试验机,金相技术、SEM及XRD等分析仪考察其摩擦性能。结果表明,采用低温电解工艺方法可以在45钢表面制备质量较好的FeS层,具有明显的减磨作用;干摩擦条件下,渗硫表面的摩擦系数是未渗硫表面的60%,在油润滑条件下,渗硫表面的摩擦系数为未渗硫表面的70%;在一定载荷范围内,随载荷的增大,FeS层减磨作用增加。The 10 μm FeS sulphurizing layer forms on surface of 0. 45C steel by low temperature electrolytic sulphurizing process in salt bath of 75% KSCN ＋ 25% NaSCN ＋ 0. 9% K3 Fe（CN） 6 ＋ 0. 1% K4Fe（CN） 6 ＋ 2. 5% NH4SCN with positive electrode 0. 45C steel and negative electrode high chromium stainless steel, 1 volt at 190 ℃ ±5 ℃ for 20 min, and its friction and wear behavior is studied by M-2000 friction and wear test machine, optical microscope, scanning electron microscope and X-ray diffractometer. Resuhs show that better quality FeS sulphurizing layer surface of 0.45C steel could be get by low-temperature electrolytic sulphurizing process and the FeS layer can obviously reduce the friction and wear of 0. 45C steel; in condition of dry friction the friction factor of sulphurizing surface is 60% of that of non-sulphurizing surface and in condition of oil lubrication the friction factor of sulphurizing surface is 70% of that of non-sulphurizing surface ; and in definite load range with increasing the load the reducing friction and wear effect of FeS layer increases.

关 键 词：45钢 低温电解渗硫 FeS渗硫层 减磨性 

分 类 号：TG156.84[金属学及工艺—热处理]