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

Nasim Alem; Vinayak P. Dravid; Shuyou Li

doi:10.1557/jmr.2007.0227

Characterization of Ni_xCo_1-xO/ZrO₂(CaO) directionally solidified eutectic (DSE) ceramic composites with a ductile interphase

Nasim Alem, Vinayak P. Dravid, Shuyou Li

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Ni_xCo_1-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 Ni_xCo_1-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.

Original language	English (US)
Pages (from-to)	1797-1805
Number of pages	9
Journal	Journal of Materials Research
Volume	22
Issue number	7
DOIs	https://doi.org/10.1557/jmr.2007.0227
State	Published - Jul 2007

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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

abstract = "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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AU - Dravid, Vinayak P.

AU - Li, Shuyou

PY - 2007/7

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AB - 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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Characterization of Ni_xCo_1-xO/ZrO₂(CaO) directionally solidified eutectic (DSE) ceramic composites with a ductile interphase

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