CHARACTERISTICS OF A ZIRCONIA-SPINEL COMPOSITE PROCESSED BY A CURRENT-ACTIVATED PRESSURE-ASSISTED DENSIFICATION METHOD

机译：电流激活的压力辅助致密化方法处理的氧化锆-尖晶石复合材料的特性

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Yttria-stabilized zirconia - spinel (3Y-TZP - 30 vol% MgAl_2O_4) composite was fabricated using a current-activated pressure-assisted densification (CAPAD) method as a one-step consolidation process. A dense nanostructured zirconia - spinel ceramic was produced with average grain sizes of ～125 and ～50 nm for zirconia and spinel, respectively. Preliminary creep experiments under constant stress conditions were performed at 1623 - 1673 K to investigate the plastic deformation behavior and the characteristics of the flow mechanisms. Quantitative investigations including measurements of grain sizes and grain shapes were conducted on the ceramic material before and after deforming in tension.

机译：氧化钇稳定的氧化锆-尖晶石（3Y-TZP-30 vol％MgAl_2O_4）复合材料是采用电流激活的压力辅助致密化（CAPAD）方法作为一步固结过程制备的。生产出致密的纳米结构的氧化锆-尖晶石陶瓷，氧化锆和尖晶石的平均晶粒尺寸分别为〜125和〜50 nm。在1623至1673 K的恒定应力条件下进行了初步蠕变实验，以研究塑性变形行为和流动机理的特性。在拉伸变形之前和之后，对陶瓷材料进行了包括晶粒尺寸和晶粒形状测量在内的定量研究。

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来源
《Mechanical properties and performance of engineering ceramics and composites IX》|2014年|151-159|共9页
会议地点 Daytona Beach FL(US)
作者
Mahmood Shirooyeh; Javier E. Garay; Terence G. Langdon;
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作者单位

Departments of Aerospace Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453, USA;

Materials Science and Engineering Program, Department of Mechanical Engineering, University of California, Riverside, CA 92521, USA;

Departments of Aerospace Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453, USA;

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原文格式 PDF
正文语种 eng
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关键词
creep; current-activated pressure-assisted densification; grain shape; spark plasma sintering; yttria-stabilized zirconia;

机译：蠕变;电流激活的压力辅助致密化；颗粒形状火花等离子体烧结；氧化钇稳定的氧化锆;

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CHARACTERISTICS OF A ZIRCONIA-SPINEL COMPOSITE PROCESSED BY A CURRENT-ACTIVATED PRESSURE-ASSISTED DENSIFICATION METHOD

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