Processing and fracture toughness of nano-sized Cu-dispersed Al_2O_3 composites

Kyung Ho Min; Sung-Tag Oh; Young Do Kim

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Processing and fracture toughness of nano-sized Cu-dispersed Al_2O_3 composites

机译：纳米Cu分散Al_2O_3复合材料的加工与断裂韧性

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An optimum route for the fabrication of Al_2O_3/ Cu nanocomposites with sound microstructure and enhanced fracture toughness was investigated. Cu-dispersed Al_2O_3 nanocomposites were obtained via hydrogen reduction and the pulse electric current sintering (PECS) of ball-milled Al_2O_3 and CuO powder mixtures. Microstructural observation of the reduced powder revealed that Cu particles of about 30 nm size homogeneously surrounded the Al_2O_3 powder. The nanocomposites, consolidated by PECS at 1250 deg C for 5 min, exhibited full density and enhanced fracture toughness compared with monolithic Al_2O_3.

机译：研究了制备具有良好微观结构和增强断裂韧性的Al_2O_3 / Cu纳米复合材料的最佳途径。通过球磨Al_2O_3和CuO粉末混合物的氢还原和脉冲电流烧结（PECS）获得了Cu分散的Al_2O_3纳米复合材料。还原粉末的微观结构观察表明，约30 nm尺寸的Cu颗粒均匀地包围了Al_2O_3粉末。与整体式Al_2O_3相比，在1250℃下通过PECS固结5分钟固化的纳米复合材料表现出全密度和增强的断裂韧性。

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《Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics》 |2003年第2期|共5页
作者
Kyung Ho Min; Sung-Tag Oh; Young Do Kim;
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正文语种 eng
中图分类合金学与各种性质合金;金属材料;
关键词
Nanocomposites; Hydrogen reduction; Pulse electric current sintering; Fracture toughness;

机译：纳米复合材料;减氢;脉冲电流烧结;断裂韧性;

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1. Processing and fracture toughness of nano-sized Cu-dispersed Al_2O_3 composites [J] . Kyung Ho Min, Sung-Tag Oh, Young Do Kim Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics . 2003,第1a2期

机译：纳米Cu分散Al_2O_3复合材料的加工与断裂韧性
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Processing and fracture toughness of nano-sized Cu-dispersed Al_2O_3 composites

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