以粒度为38～150μm的两种不锈钢粉末(不规则形状和球形)为原料制备了不同孔隙度的金属多孔材料,将其在真空炉中于1250℃进行烧结,保温时间为2h.然后利用阿基米德定律和计算机控制万能力学试验机分别测试烧结试样的孔隙度与压缩强度,采用金相显微镜观察烧结试样的微观组织,最后利用分形理论计算孔结构分形维数,并分析了孔隙度、压缩强度与分形维数的关系.结果表明:分形维数随着孔隙度的增加而逐渐增大.另外,分形维数与孔隙度之间满足玻耳兹曼模型,而压缩强度与分形维数满足指数模型.
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