关键词: Fe-W-Cu, 合金镀层, 结构, 磨损, 关键词：3D打印机器人 并联机构 雅可比矩阵 大转角

Abstract: Base on the great advantages of Fe-based electro-brush plating in the green remanufacturing engineering, Fe-based alloy coating are prepared by adding co-deposition chemical ion to plating bath. Scanning electron microscopy (SEM), X-ray diffraction (XRD), friction and wear tests are applied to study the influence of adding ion on the morphology, composition, structure, hardness and wear properties of Fe-based coating. The effects of heat treatment on the coatings’ properties are also investigated. The results show that adding W can improve hardness of Fe-based coating and reduce stress cracking phenomenon, but decrease the density and wear resistance. It can refine coating organization and improve wear resistance by adding Cu which has lubrication and excellent plastic flow capacity on the basis of Fe-W binary alloy coating. The Fe3C phase is forming during heat treatment for the three kinds of Fe-based coating, and the crystallinity is getting high as the temperature increases. It has a secondary hardening phenomenon for Fe and Fe-W coatings in the range of 450-650 ℃.

Key words: Alloy coating, Fe-W-Cu, Microstructure, Wear, Keywords: 3D printing robot, parallel manipulator, the Jacobian matrix, large angle of rotation