Characterization of NixCo1-xO/ZrO2(CaO) directionally solidified eutectic (DSE) ceramic composites with a ductile interphase

Alem  N; Dravid  VP; Li  SY

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Characterization of NixCo1-xO/ZrO2(CaO) directionally solidified eutectic (DSE) ceramic composites with a ductile interphase

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NixCo1-xO/ZrO2(CaO) directionally solidified eutectics (DSEs) form a ductile metallic interphase after they are chemically reduced at high temperatures. Vickers indentation tests have previously shown a significant change in the crack propagation behavior of the reduced composites due to plastic deformation and strain energy absorption mechanisms operating in the system after reduction. This paper focuses on structural and chemical characterization of NixCo1-xO/ZrO2(CaO) DSEs after reduction. Analytical transmission electron microscopy techniques such as energy dispersive x-ray spectroscopy (EDXS) and electron energy loss spectroscopy (EELS) show elimination of oxygen and formation of nanoscale Ni(Co) solid.

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《Journal of Materials Research》 |2007年第7期|1797-1805|共9页
作者
Alem N; Dravid VP; Li SY;
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作者单位

Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA;

Northwestern Univ, Elect Probe Instrumentat Ctr, Evanston, IL USA;

Northwestern Univ, Characterizat Expt Ctr, Evanston, IL 60208 USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
STACKING FAULT ENERGY; PHASE-TRANSFORMATION; OXIDE COMPOSITES; PLASTIC-DEFORMATION; FRACTURE-BEHAVIOR; SINGLE-CRYSTALS; COBALT FILMS; NI-YSZ; INTERFACES; REDUCTION;

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Characterization of NixCo1-xO/ZrO2(CaO) directionally solidified eutectic (DSE) ceramic composites with a ductile interphase

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