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The Microstructure and Mechanical Behavior Evaluation of Ce-TZP/Al_(2)O_(3)Nanocomposites 被引量:1

The Microstructure and Mechanical Behavior Evaluation of Ce-TZP/Al_2O_3 Nanocomposites
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摘要 Ce-TZP/Al2O3 nanocomposites were prepared from mixture of self-made Ce-TZP nanometer powder and commercial A12O3 powder by hot-pressing method. Influences of nanometer ZrO2 particles on the mechanical properties and microstructure of Ce-TZP/Al2O3 ceramics were investigated. Meanwhile, t-—m transformation toughening mechanism was investigated by x-ray diffractometry (XRD) method, and deflection of samples under applied stress were recorded too. The results show that when the percentage of ZrO2 was 20%, the mechanical properties and microstructures of materials were preferential. Additionally, TEM observation show that dislocation structures form both in the A12O3 grain and on the A12O3 grain boundary. Ce-TZP/Al2O3 nanocomposites were prepared from mixture of self-made Ce-TZP nanometer powder and commercial A12O3 powder by hot-pressing method. Influences of nanometer ZrO2 particles on the mechanical properties and microstructure of Ce-TZP/Al2O3 ceramics were investigated. Meanwhile, t-—m transformation toughening mechanism was investigated by x-ray diffractometry (XRD) method, and deflection of samples under applied stress were recorded too. The results show that when the percentage of ZrO2 was 20%, the mechanical properties and microstructures of materials were preferential. Additionally, TEM observation show that dislocation structures form both in the A12O3 grain and on the A12O3 grain boundary.
出处 《材料热处理学报》 EI CAS CSCD 北大核心 2004年第5期139-142,共4页 Transactions of Materials and Heat Treatment
基金 supports from Educational Fund of Jiangxi province(DB200201009) the Fund of Materials Science and Engineering Center of Jiangxi Province(KG200201020),China are highly appreciated.
关键词 显微结构 纳米复合物 机械特征 韧化 热处理 Ce-TZP/Al2O3 nanocomposite, mechanical behavior, strengthening and toughening, hot-pressing
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