摘要
为提高普通镀铁层的硬度和耐磨性,扩大其在工业生产中的应用范围,进行了铁基复合镀层的制备与性能研究.通过球磨法制备了Si C颗粒（粒径为100~200 nm）,向镀铁液中添加Si C颗粒并采用电沉积的方式制备铁基Si C复合镀层.利用显微硬度仪、扫描电子显微镜（SEM）、能谱仪（EDS）、摩擦磨损试验机等对复合镀层的显微硬度、形貌结构、元素成分和摩擦学性能进行测试.结果表明：复合镀层的硬度与普通镀铁层相比显著提高,稳压电压为6 V时复合镀层的显微硬度最大;复合镀层表面微裂纹呈网状结构,截面微裂纹呈短条状结构;镀层中加入Si C颗粒可阻止裂纹的扩展,减小摩擦系数,提高镀层的耐磨性能.
To improve the hardness and wear resistance of normal iron plating coating, and expend its range of application, the composite iron plating coating was developed and studied. The SiC powder （100 -200 nm） was produced by using ballmilling method, then mixed in the iron plating bath to produce composite coatings through electro-deposition process. The hardness, morphology, chemical composition and tribology performance were studied by using micro-hardness tester, scanning electron microscope （ SEM ） , energy disperse spectroscopy （EDS） and friction wear unit respectively. Results show that the micro-hardness of the composite coating is higher than classic iron plating, and reached the peak at a voltage 6 V; the surface micro-cracks appear as net structure on the surface and as short strip structure on the cross profile. The micro-nano SiC particles can prevent the propagation of the micro-cracks, reduce the friction coefficient and improve the wear-resistance properties of the coating.
出处
《大连海事大学学报》
CAS
CSCD
北大核心
2015年第3期104-108,共5页
Journal of Dalian Maritime University
关键词
SiC
复合镀层
显微硬度
形貌结构
摩擦学性能
SiC
composite plating coating
miero-hardnes
morphology
tribology performance
