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| EFFECT OF THE SAMPLE STATE ON DECHROMIZATION OF Cu-Cr ALLOY |
| FAN Liru1;LIU Yuwen2;WANG Kuan3;LI Yuan2;SUN Qina4 |
1.College of Science; Yanshan University; Qinhuangdao 066004
2.Department of Environmental & Chemical Engineering; Yanshan University; Qinhuangdao 066004
3.Hebei Normal University of Science & Technology; Qinhuangdao 066004
4.Department of Environmental Engineering; Environmental Management College of China; Qinhuangdao 066004 |
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Abstract In order to realize the dechromization of copper alloy in HCl solution, the effect of the sample state on dechromization of Cu-Cr alloy was studied by means of metallographic observation, X-ray diffractometer(XRD), scanning electron microscope(SEM/EDX), and X-ray fluorescence spectrometer, and the mechanism was also analyzed. The results showed that the bigger the sample deformation and surface roughness, the shorter the incubation time of dechromization, and the lower the concentration and temperature of solution for the dechromization, and it is conducive to dechromization of Cu-Cr alloy. As a result, the deformation can increase the dechromization rate, and decrease the compactibility of the microstructure of the dechromization layer, but the surface roughness does not obviously affect the dechromization rate.
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Received: 06 March 2007
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Corresponding Authors:
LIU Yuwen
E-mail: ljh10@ysu.edu.cn
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