以硼氢化钾(KBH4)为还原剂,采用化学镀法制备了纳米Ni-B包覆Al复合粉末,研究了镀液组分及工艺对包覆效果的影响,获得了制备复合粉末的优化条件.采用SEM,XRD,ICP和BET对复合粉末的表面形貌、物相结构、元素组成和比表面积进行了表征分析.结果表明:纳米Ni-B在Al表面包覆连续、均匀,且纳米Ni-B呈非晶态,粒径80~100nm,化学组成约为Ni72B28,纳米Ni-B/Al复合粉末比表面积达到了26.21m2·g-1.
Abstract
Ni-B/Al nanocomposites were prepared via electroless plating by using KBH4 as a reducing agent.The bath components and processing parameters were investigated in order to obtain the optimized condition.The surface morphology,crystal phase,chemical composition and specific surface area of the as-prepared nanocomposites were characterized by SEM,XRD,inductively coupled plasma(ICP)atomic emission spectrometry and Brumauer-Emmett-Teller(BET)specific surface area.The results show that a continuous layer of 80-100 nm amorphous Ni72B28 is covered on the surfaces of Al particles,and BET data of the as-prepared nanocomposites are up to 26.21m2·g-1.
关键词
化学镀 /
铝粉 /
包覆 /
纳米复合粉末
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Key words
electroless plating /
aluminum particle /
coating /
nanocomposite
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中图分类号：
TB331
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参考文献
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脚注
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基金
国家自然科学基金资助项目(50876046)
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