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

被引：3
作者：
Alem, Nasim
Dravid, Vinayak P. [1 ]
Li, Shuyou
机构：
[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
[2] Northwestern Univ, Elect Probe Instrumentat Ctr, Evanston, IL USA
[3] Northwestern Univ, Characterizat Expt Ctr, Evanston, IL 60208 USA
来源：
JOURNAL OF MATERIALS RESEARCH | 2007年 / 22卷 / 07期
关键词：
D O I：
10.1557/JMR.2007.0227
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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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收藏
页码：1797 / 1805
页数：9
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