用显微维氏硬度计测试不饱和聚酯(UPR)/超细级Al2O3复合微粒的硬度.采用一种特殊的制样新方法:把UPR/Al2O3复合微粒小球镶嵌于透明粘合剂中并固化在具有反光面的金属底座上;在考察UPR/Al2O3复合材料基体压缩力学行为的基础上,讨论了系统误差、测试范围及可行性;对四种不同Al2O3添加量的UPR/Al2O3复合微粒和复合材料浇铸体试样,均随机抽取10个硬度值作为统计样本,分析了相对误差和方差;比较了具有相同Al2O3实际含量的UPR/Al2O3复合微粒和UPR/Al2O3复合材料浇铸体的硬度差异.
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