纳米镍粉颗粒表面氧化物的测量

Determination of Oxides on Nano-scale Nickel Particle Surfaces

纳米Ni粉表面的氧化物覆盖度和氧化物组分是重要参数。报道了Ni粉XPS分析结果和测量计算方法。XPS结果表明,某工艺制备的纳米Ni粉表面含有NiO和Ni(OH)2,并计算得到了表面氧化物覆盖度。比较不同粒径纳米N i粉的结果发现,其表面氧化物的覆盖度变化不大,但氧化物的组成相差较大。

Coverage and component of oxides on nano-scale nickel (Ni) powder are important parameters. XPS determinations of the Ni powder are reported in the paper. The XPS measurements show the compositions of NiO and Ni(OH)2 cover the Ni particle surfaces, and their coverages are evaluated. With comparisons of different diameters of Ni particles, the coverages vary little but the compositive contents vary large.