高温高速下铁基合金激光熔覆涂层耐磨性能研究  

Study on the wear resistance of laser cladding coatings on iron based alloys at high temperature and high speed

作　　者：付琴 姜炳春[1] 胡少华 阎文 FU Qin;JIANG Bingchun;HU Shaohua;YAN Wen(Guangdong University of Science and Technology,Dongguan Guangdong 523083,China)

机构地区：[1]广东科技学院,广东东莞523083

出　　处：《激光杂志》2024年第11期197-202,共6页Laser Journal

基　　金：东莞市社会发展科技项目(No.20211800903382)。

摘　　要：本研究旨在制备出一种在高温高速条件下具有优异耐磨性能的铁基合金激光熔覆涂层。通过选择钢基材料金属盘作为熔覆涂层的基础材料,采用铁粉作为主要成分,结合高纯碳化铬粉和二硫化钨,利用激光熔覆机的辅助作用,制备出铁基合金激光熔覆涂层。使用试验机测试该涂层在高温高速摩擦环境下的耐磨性能,试验结果显示,该涂层在400℃时,摩擦系数和磨损率分别达到0.3和20%,属于较高范围,且该温度下,摩擦后涂层更加光滑,不会出现较为严重的颗粒磨损。在1500 r/min的试验条件下,该涂层的摩擦系数呈现偏低状态,且涂层未出现明显凹坑与划痕。由此可见在高温高速环境下,该涂层具有较高耐磨性能。This study aims to prepare an iron-based alloy laser cladding coating with excellent wear resistance under high temperature and high speed conditions.By selecting steel based material metal discs as the basic material for cladding coatings,using iron powder as the main component,combined with high-purity chromium carbide powder and tungsten disulfide,and utilizing the auxiliary effect of laser cladding machines,iron-based alloy laser cladding coatings are prepared.The wear resistance of the coating was tested using a testing machine in a high-temperature and high-speed friction environment.The test results showed that the friction coefficient and wear rate of the coating reached 0.3 and 20%respectively at 400℃,belonging to a relatively high range.Moreover,at this temperature,the coating became smoother after friction and did not exhibit more severe particle wear.Under the 1500r/min test conditions,the friction coefficient of the coating showed a low state,and there were no obvious pits or scratches on the coating.From this,it can be seen that the coating has high wear resistance in high-temperature and high-speed environments.

关 键 词：高温高速下 铁基合金 激光熔覆 耐磨性能 摩擦系数 磨损率 

分 类 号：TN244[电子电信—物理电子学]