Preparation of Ni/C core-shell composite powders by electroless plating method

摘要：

Ni/C core-shell composite powders were prepared by electroless nickel-plating.The effects of concentration of NiSO4,bathing temperature,ratio of hydrazine hydrate to NiSO4,pH of the solution,amounts of complexing reagent and surfactant,bath load of activated carbon and reaction time,and so on,on the preparation of Ni/C core-shell composite powders were studied.The results show that the principal factors for Ni/C composite powders preparation are bathing temperature,ratio of hydrazine hydrate to NiSO4 and pH of the solution.The optimum conditions are plating at 90 ℃ with pH10.7 and molar ratio of N2H4H2O to Ni2+of 3.0.The plated nickel powders are observed to be sphere-like in morphology with size about 100 nm.The maximum dielectric loss of Ni/C core-shell composite powders is about 0.35,and its magnetic loss was low with value about 0 in 216 GHz.

关键词： Ni/C core-shell powders electroless plating preparation

作者: ZHANG Hai-jun LIU Yun JIA Quan-li JIA Xiao-lin

作者单位: Institute of High Temperature Ceramics,Zhengzhou University,Zhengzhou 450052,China College of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450052,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）