分析了粉末注射成形中常用的还原钴粉末颗粒形状、投影边界、表面的分形特征.介绍了适用于测量粉末分形结构的构造步长法,给出1种用分形几何语言更精确地定量描述粉末特性的方法.用内转式构造步长法计算了还原钴粉末颗粒边界的分形维数,得出其分形维数的取值范围在1.116 ～1.122之间.为粉末注射成形工艺过程的控制提供了更精确的材料参数.
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