Mechanical properties and microstructure of Al2</sub>O3</sub>/mullite composite

F. C. Zhang; H. H. Luo; S. G. Roberts

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Mechanical properties and microstructure of Al2O3/mullite composite

机译：Al2 O3 /莫来石复合材料的力学性能和显微组织

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An Al2O3/5 vol.% mullite composite was synthesized by using reaction sintering of Al2O3/0.78 wt.% SiC at 1,600 °C for 2 h in air. The phase analysis of the Al2O3/mullite composite was carried out using X-ray diffraction (XRD). There were two kinds of mullite in alumina/mullite composite, namely, 3Al2O3·2SiO2 and Al5.65Si0.35O9.175. The microstructure of the Al2O3/mullite composite was investigated using scanning electron microscope (SEM) and transmission electron microscope (TEM). The mechanical properties such as Young’s modulus, Poisson’s ratio, hardness, toughness and strength of the Al2O3/mullite composite were investigated. The influence of mullite on the composite is discussed.

机译：Al2 O3 /0.78 wt。％SiC在1,600°C的空气中反应烧结2 h，合成了Al2 O3 / 5体积％的莫来石复合材料。采用X射线衍射（XRD）对Al2O3 /莫来石复合材料进行了相分析。氧化铝/莫来石复合材料中有两种莫来石，分别为3Al2 O3 ·2SiO2 和Al5.65 Si0.35 O9.175。 / sub>使用扫描电子显微镜（SEM）和透射电子显微镜（TEM）研究了Al2 O3 /莫来石复合材料的微观结构。研究了Al2 O3 /莫来石复合材料的杨氏模量，泊松比，硬度，韧性和强度等力学性能。讨论了莫来石对复合材料的影响。

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《Journal of Materials Science》 |2007年第16期|6798-6802|共5页
作者
F. C. Zhang; H. H. Luo; S. G. Roberts;
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State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 P.R. China;

State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 P.R. China;

Department of Materials University of Oxford Oxford OX1 3PH UK;

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Mechanical properties and microstructure of Al2O3/mullite composite

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