Si_(3)N_(4)含量对Ni-P-WS2-Si_(3)N_(4)复合化学镀层在不同温度下摩擦磨损性能的影响  

Effect of Si_(3)N_(4)content on friction and wear properties of electrolessly plated Ni-P-WS2-Si_(3)N_(4)composite coating at different temperatures

作　　者：唐建平 黄寅迪 林锋 袁严浩瀚 王军平 郑晓华 TANG Jianping;HUANG Yindi;LIN Feng;YUAN Yanhaohan;WANG Junping;ZHENG Xiaohua(Hangzhou Hangyang Forging&Heat Co.,Ltd.,Hangzhou 311305,China;Zhejiang Crystalyond Semiconductor Co.,Ltd.,Shaoxing 312400,China;College of Materials Science and Engineering,Zhejiang University of Technology,Hangzhou 310014,China;Zhejiang Testing&Inspection Institute for Mechanical and Electrical Products Quality Co.,Ltd.,Hangzhou 310051,China)

机构地区：[1]杭州杭氧锻热有限公司,浙江杭州311305 [2]浙江晶越半导体有限公司,浙江绍兴312400 [3]浙江工业大学材料科学与工程学院,浙江杭州310014 [4]浙江省机电产品质量检测所有限公司,浙江杭州310051

出　　处：《电镀与涂饰》2025年第4期30-38,共9页Electroplating & Finishing

摘　　要：[目的]Ni-P-WS_(2)化学镀层具有良好的润滑性能,但其耐磨性不足,难以满足高温、重载等苛刻工况需求。[方法]通过在Ni-P-WS_(2)复合镀液中添加Si_(3)N_(4)纳米颗粒,化学镀得到Ni-P-WS_(2)-Si_(3)N_(4)复合镀层,并进行400℃退火处理。利用扫描电镜(SEM)、X射线衍射仪(XRD)和摩擦磨损试验机分析了镀层的组织结构及其在不同温度下的摩擦学特性。[结果]随着镀液中Si_(3)N_(4)用量增加,Ni-P-WS_(2)-Si_(3)N_(4)复合镀层表面呈现致密化趋势,在4.0 g/L时镀层的Si_(3)N_(4)含量、硬度和平均摩擦因数达到峰值,而磨损率在所有测试温度下均单调下降。随试验温度升高,Ni-P-WS_(2)-Si_(3)N_(4)复合镀层的磨损机制由室温下的粘着磨损转变为高温下的磨粒磨损。Si_(3)N_(4)的加入显著提升了镀层的高温稳定性,在600℃时仍未出现磨穿现象。[结论]Si_(3)N_(4)用量为4.0~5.0 g/L时,退火态Ni-P-WS_(2)-Si_(3)N_(4)复合镀层在25~400℃范围内均展现出优异的摩擦学性能,其耐磨性为Ni-P-WS_(2)复合镀层的5倍以上,适用于高温、重载等服役环境。[Objective]Although electrolessly plated Ni-P-WS_(2)coatings exhibit excellent lubricating properties,their wear resistance is insufficient to meet the demands of harsh operating conditions such as high temperatures and heavy loads.[Method]Ni-P-WS_(2)-Si_(3)N_(4)composite coatings were prepared by electroless plating in bath with Si_(3)N_(4)nanoparticles followed by annealing at 400℃.The microstructure and tribological properties of different coatings at different temperatures were analyzed by scanning electron microscopy(SEM),X-ray diffraction(XRD),and friction wear tests.[Result]As the Si_(3)N_(4)dosage in bath was increased,the surface of Ni-P-WS_(2)-Si_(3)N_(4)composite coating became denser.The Si_(3)N_(4)content,hardness,and average friction coefficient of Ni-P-WS_(2)-Si_(3)N_(4)composite coatings peaked at 4.0 g/L,while the wear rate decreased monotonically across all tested temperatures.The wear mechanism of Ni-P-WS_(2)-Si_(3)N_(4)composite coatings changed from adhesive wear at room temperature to abrasive wear at high temperature with the increasing of testing temperature.The incorporation of Si_(3)N_(4)significantly enhanced the high-temperature stability of the Ni-P-WS_(2)-Si_(3)N_(4)composite coatings,preventing wear-through even at 600℃.[Conclusion]The annealed Ni-P-WS_(2)-Si_(3)N_(4)composite coatings electrolessly plated with 4.0-5.0 g/L Si_(3)N_(4)demonstrated outstanding tribological property at temperature of 25-400℃,with wear resistance more than five times better than that of Ni-P-WS_(2)composite coatings,making them suitable for high-temperature and heavy-load service environments.

关 键 词：化学镀 镍-磷合金 氮化硅 二硫化钨 摩擦学性能 热处理 

分 类 号：TG153.2[金属学及工艺—热处理]