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OALib Journal期刊
ISSN: 2333-9721
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脉冲周期和糖精添加剂对电沉积ni镀层微观结构的影响
Keywords: 材料合成与加工工艺,？脉冲电沉积,？脉冲周期,？糖精,？织构,？微观结构,？纳米晶ni
Abstract:
？用脉冲电沉积技术制备ni镀层,研究了脉冲周期和糖精添加剂对其微观结构的影响。结果表明,采用单向脉冲电沉积时,增大脉冲周期可制备出生长取向更均匀、表面更平整且晶粒尺寸更小的纳米晶ni镀层;在镀液中加入糖精可降低镀层中的张应力,从而避免镀层开裂,且可明显细化镀层的晶粒尺寸;采用正反脉冲电沉积时,随着反向脉冲周期的增大,镀层的晶粒先沿<200>方向择优生长,而后转变为沿<111>、<200>和<220>三个方向较均匀生长,最后又重新沿<200>方向择优生长。
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