东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (6): 810-813+825.DOI: -

• 论著 • 上一篇    下一篇

45#钢表面Ni-P-nano-SiC复合化学镀层的制备

陈岁元;范红;梁京;刘常升;   

  1. 东北大学材料各向异性与织构教育部重点实验室;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    教育部创新团队发展计划项目(IRT0713);;

Preparation of electroless composite Ni-P-nano-SiC plating on 45# steel

Chen, Sui-Yuan (1); Fan, Hong (1); Liang, Jing (1); Liu, Chang-Sheng (1)   

  1. (1) Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Chen, S.-Y.
  • About author:-
  • Supported by:
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摘要： 在优化设计的化学镀基础镀液中通过添加不同含量的纳米SiC颗粒,研究在45#钢表面制备具有纳米SiC颗粒增强的复合镀层及形成机理.利用SEM,XRD和显微硬度计等方法对实验样品的组织结构、形貌、显微硬度及其镀层形成机理进行了研究,结果表明:实验制备的Ni-P,Ni-P-SiC镀层镀态时硬度分别为572 HV,649 HV,热处理后其表面硬度在400℃时达到最大值1 045 HV和1 341 HV.纳米SiC颗粒在镀液中不参与化学反应,只是与化学反应所产生的Ni和P共同沉积在镀层中起到了复合强化的作用.Ni-P-nano-SiC镀层的生长机理是按层状方式生长,生长方向垂直于钢基体表面.纳米SiC提...

关键词: 化学复合镀, Ni-P-nano-SiC复合镀层, 纳米颗粒复合强化, 层状生长

Abstract: Electroless plating Ni-P composite coating reinforced with nano-SiC particles on the 45# steel substrate was prepared by adding different contents of nano-SiC particles in an optimized electroless bath. The microstructure, morphology, microhardness, and formation mechanism of the samples were analyzed using micro-hardness tester, scanning electron microscopy and X-ray diffraction. The results showed that the coatings of Ni-P, Ni-P-SiC are amorphous and the hardness values are 572 HV and 649 HV, respectively. The coatings are converted from amorphous to crystalline by heat treatment and the hardness increases obviously. The maximum hardness of the Ni-P coating and the Ni-P-nano-SiC composite coating is 1045 HV and 1341 HV after heat treatment at 400°C for 1 h. Nano-SiC particles do not take chemical action in electroless bath. They only are deposited in composite coating with the Ni and P and play a particle composite reinforcing role. The Ni-P-nano-SiC composite coating grows in layer mode. Its growth direction is perpendicular to the surface of the steel substrate. Nano-SiC particles can increase the speed of the electroless composite plating and improve the growth of the composite coating with a thin sub-layer mode.

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