Abstract Alumina based particles were prepared from aluminium chloride hydroxide as starting material by sol-gel technique. One series of particles was doped with ferrous oxide. Both series of particles were calcinated at three different temperatures: 700 °C, 800 °C and 900 °C. Poly(methyl methacrylate), PMMA, was used as a matrix and two different types of alumina based particles were added into the matrix to form the composites. All composites consisted of 3 wt% of alumina based particles. The aim of this study was to examine whether and how the temperature of particle calcination affects the microhardness and mechanical properties of the composite. The particles were characterized by the X-ray diffraction (XRD) and physical absorption methods. The morphology of the composites was examined using a field emission scanning electron microscope (FESEM). The microhardness of composites was measured using a traditional Vickers hardness (HV) method. The mechanical characteristics of obtained composites were determined using tensile test and impact testing.

中文翻译：

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优化制备氧化铝基填料以调节复合材料性能

摘要 以氢氧化铝为原料，采用溶胶-凝胶技术制备氧化铝基颗粒。一系列颗粒掺杂有氧化亚铁。两个系列的颗粒都在三种不同的温度下煅烧：700 °C、800 °C 和 900 °C。聚（甲基丙烯酸甲酯）PMMA 用作基体，将两种不同类型的氧化铝基颗粒添加到基体中以形成复合材料。所有复合材料均由 3 重量％的氧化铝基颗粒组成。本研究的目的是检验颗粒煅烧温度是否以及如何影响复合材料的显微硬度和机械性能。通过X射线衍射（XRD）和物理吸收方法对颗粒进行表征。使用场发射扫描电子显微镜（FESEM）检查复合材料的形貌。使用传统的维氏硬度 (HV) 方法测量复合材料的显微硬度。使用拉伸试验和冲击试验确定获得的复合材料的机械特性。