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本文利用扫描电镜观察了锌铬膜的表面形貌 ,发现锌铬膜中的锌粉没有熔化到一起 ,锌铬膜是锌粉通过黏结剂层层堆积而成的。利用 X-射线能谱分析了锌铬膜表面成分 ,发现锌铬膜中铬元素含量与成膜锌粉粒度有关 ,锌粉粒度越细 ,则所得锌铬膜含铬量越高。利用电子探针研究了锌铬膜断面成分分布 ,发现锌粒周围包覆着无机铬化合物。利用 X-射线衍射确定起黏结剂作用的无机铬化合物主要是Cr2 O3 。
In this paper, the surface morphology of Zn-Cr films was observed by scanning electron microscopy. It was found that the Zn powders in the Zn-Cr films did not melt together, and the Zn-Cr films were formed by zinc powder deposited through the adhesive layer. The surface composition of zinc-chromium film was analyzed by X-ray energy dispersive spectroscopy. It was found that the content of chromium in the zinc-chromium film is related to the particle size of the zinc film. The finer the zinc particle size, the higher the chromium content of the zinc-chromium film. The distribution of zinc-chrome film was studied by electron probe. It was found that the zinc particles were coated with inorganic chromium compounds. The inorganic chromium compound which is used as a binder by X-ray diffraction is mainly Cr 2 O 3.