The Preparation and Growth Mechanism of Ni-coated TiH2 Composite Powder by Electroless Plating

摘要：

　　The Ni-coated TiH2 composite powder was prepared by electroless plating and the concentration of reducing agent,reaction temperature,reaction time,PH value and so on were optimized by orthogonal experiment design.The Ni/TiH2 composite powder morphology and composition was analyzed by scanning electron microscopy (SEM),Energy Dispersive spectroscopy (EDS),X-ray diffraction (XRD);the plated Ni layer growth mechanism was explored preliminary.The Optimization technical parameters: the plating temperature was 85℃,the pH value was 10 and the hydrazine concentration was 100ml/L.Complete coating and uniform thickness of the Ni layer with average coating thickness about 2.0μm was successfully prepared with the optimization technical parameters.The growth mechanism of the coating followed the Ostwald ripening mechanism.Compared the TiH2 uncoated with Ni layers particles,the TiH2 composite powder could efficiently delay the starting time of gas release by approximately 80s.

关键词： Electroless plating Ni-coated TiH2 composite powder Orthogonal experiment design Nucleation and growth

作者: Jiaqian Hou Lairong Xiao Lei Guo Songsong Zhou Ruofan Wang

作者单位: School of Material Science and Engineering, Central South University, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 353-359

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）