ZHONG Chun-Iiang,DONG Shi-run,YU Li-hua,XU Jun-hua.The Study on Microstructure and Oxidation Resistance for Cri_xAlxN Coating[J],36(6):12-14,24 |
The Study on Microstructure and Oxidation Resistance for Cri_xAlxN Coating |
Received:July 27, 2007 Revised:December 10, 2007 |
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KeyWord:Magnetron sputtering Cri _xAlxN coatings Microstructure Oxidation resistance |
Author | Institution |
ZHONG Chun-Iiang |
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang , China |
DONG Shi-run |
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang , China |
YU Li-hua |
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang , China |
XU Jun-hua |
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang , China |
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Abstract: |
A series of Cri_xAlxN coatings were deposited by reactive magnetron sputtering. The content, microstructure , surface morphology of the coatings were characterized by energy dispersive spectroscopy ( EDS) , X-ray diffraction ( XRD) and scanning electron microscopy ( SEM) . The effect of Al content on the microstructure and oxidation resistance was studied. It was found that the coatings take the fcc-CrN structure with a ( 111) preferential orientation. The lattice constant of the coatings gradually decreases, and the oxidation resistance obviously improves with the increase of Al content, Al content on the surface of Cr0.6356Al0.3644N coatings increases slightly with oxidation temperature raising, and the coatings fail with crack inducing at 900℃ . |
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