采用等离子喷涂工艺,制备了WC、ZrO2、Cr2O3和Al2O3陶瓷颗粒/镍合金复合涂层.用X射线衍射研究了陶瓷颗粒复合涂层相的分布;用里氏硬度计测量陶瓷颗粒/镍合金复合涂层的硬度;用CSS-1110电子万能试验机研究陶瓷颗粒复合涂层的弯曲断裂性能.对涂层金相组织结构进行二值化处理,利用Sandbox法对陶瓷颗粒在金属基体中的分布进行研究,得到了不同体积分数下陶瓷颗粒复合材料涂层的分维数.结果表明,陶瓷颗粒/镍合金复合涂层分维数随陶瓷颗粒含量的增加而增加,与陶瓷颗粒种类无关;陶瓷颗粒/镍合金复合涂层硬度和分维数随陶瓷颗粒直径减小而增加.随着分维数的增加,复合涂层弯曲断裂角下降.
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