Surface fractal dimension was employed to describe the topography of flaky powder.
根据片状粉末表面几何特征，提出了用分形方法对其进行描述。
SEM photos reveal that the nickel coated copper powder has satisfactory morphology and flaky degree.
SEM照片显示，镍包铜粉形貌较好，片状化程度较好。
PVD process is an important method for manufacturing flaky aluminium nano powder.
PVD法是目前制备纳米片状铝粉的主要方法。
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