Effect of Reinforcement Particle Size on Fabrication and Properties of Composite Coatings

详细信息    查看全文 | 下载全文 | 推荐本文 |

• 作者：JIA HuLIANG FangPEI Wen-zhong
• 会议时间：2014-04-21
• 关键词：Anticorrosion ; Composites ; Electroless ; Fabrication ; Microhardness ; Particle ; Silicon carbide ; Size
• 作者单位：Key Laboratory of Optoelectronic Technology and Systems, Education Ministry of China, Department of Applied Physics, Chongqing University, Chongqing 400044
• 母体文献：2014(重庆)国际表面工程论坛暨第十二届全国表面工程·电镀与精饰年会论文集
• 会议名称：2014(重庆)国际表面工程论坛暨第十二届全国表面工程·电镀与精饰年会
• 会议地点：重庆
• 主办单位：中国表面工程协会
• 语种：chi

摘要

In this work, three nickel-cobalt-phosphorus composite coatings co-deposited with particles of silicon carbide of three different sizes (40, 200, and 800 nm) were prepared on aluminum alloys using electroless deposition.The fabrication process of composites has been discussed, and the effect of the particle size of silicon carbide on microhardness and corrosion resistance of composites has been studied.The mor-phology, composition, microstructure, microhardness, and corrosion resistance of deposits were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, Vickers hardometer, and electrochemical workstation, respectively.The results reveal that the particle size has not much effect on the deposition rate of coatings; however, the coating codeposited with smaller particles has greater incorporation amount of particles in number density, less porosity, and finer grains.Furthermore, the incorporation of smaller particles leads to higher hardness and better corrosion resistance of coatings.