CAJ | 학술논문

利用渗氮／渗硫复合处理在LZ50钢表面制备离子渗氮／渗硫层，在干态及不同角位移幅值下对渗层及其基体材料进行转动微动磨损试验，利用扫描电子显微镜、能谱仪和2D／3D轮廓仪对磨痕进行微观分析。试验结果表明：渗氮／渗硫层改变了基体材料的微动运行工况图，部分滑移区和滑移区边界向部分滑移区移动，滑移区运行范围增大；在部分滑移区，渗层的摩擦因数明显低于基体材料，其损伤十分轻微；在滑移区，次表层剥落的硬质颗粒使得稳定阶段摩擦因数高于基体材料，磨损机制为磨粒磨损、氧化磨损和剥层。
이용삼담／삼류복합처리재LZ50강표면제비리자삼담／삼류층，재간태급불동각위이폭치하대삼층급기기체재료진행전동미동마손시험，이용소묘전자현미경、능보의화2D／3D륜곽의대마흔진행미관분석。시험결과표명：삼담／삼류층개변료기체재료적미동운행공황도，부분활이구화활이구변계향부분활이구이동，활이구운행범위증대；재부분활이구，삼층적마찰인수명현저우기체재료，기손상십분경미；재활이구，차표층박락적경질과립사득은정계단마찰인수고우기체재료，마손궤제위마립마손、양화마손화박층。
The surfur?nitrided layer on the surface of LZ50 steel was prepared by surfur?nitrided duplex processes. The rotational fretting wear tests of diffusion layer and substrate were carried out under different angular displacement ampli?tudes in dry condition.The wear scars were analyzed by optical microscope,scanning electric microscope,energy dispersive spectroscopy(EDX)and 2D/3D profilometer.The experimental results show that the surfur?nitrided layer changes the run?ning condition fretting map of the substrate.The boundary between partial slip regime and slip regime moves to the partial slip regime,and the width of the slip regime is broadened.In the partial slip regime,the friction coefficient of the diffusion layer is significantly lower than that of substrate,and the damage of the diffusion layer is very slight.In the slip regime,the friction coefficient of the diffusion layer is higher than that of substrate due to hard particles peeling from subsurface in steady stage,and the wear mechanism of the diffusion layer is mainly abrasive wear,oxidative wear and delamination.