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Citation: DAI Gao-Peng, LIU Su-Qin, ZHU Wen-Jie, HE Ya-Deng. Electrodeposition of NiCoCr-Al₂O₃ Foam Alloy and its Antioxidation at High Temperatures[J]. Chinese Journal of Applied Chemistry, ;2007, 24(2): 188-191. shu

Electrodeposition of NiCoCr-Al₂O₃ Foam Alloy and its Antioxidation at High Temperatures

1.
a Department of Chemistry and Biological Science, Xiangfan University, Xiangfan 441053;
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b College of Material and Engineer, Central South University, Changsha;
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c Changsha Lyrun Material Co., Ltd, Changsha

Corresponding author: DAI Gao-Peng,
Received Date: 26 January 2006
Available Online: 30 June 2006

NiCoCr-Al₂O₃ foam alloy was electrodeposited,the effects of the composition of solution on the properties of foam alloy were studied.The contents of Cr and Al₂O₃ in the alloy increase with the increases of concentrations of CrCl₃·6H₂O and Al₂O₃ in bath,the alloy surface changes to black when Cr in the alloy is over 6.8%;the alloy becomes fragile when Al₂O₃ in the alloy is over 8.1%.It is foudn that only when the temperature was higher than 852.37℃did the phase which is propitious to antioxidation at high temperatures appear.The effects of treatment temperature on the antioxidation of the alloy at high temperatures were investi-gated,the mass gain was the lowest after the alloy was treated at 1200℃.The effects of chromium and aluminium contents on the antioxidation of the alloy at high temperatures were also studied,the antioxidation of the alloy was improved with increasing the amount of Cr and Al₂O₃ in the alloy.It is found that Al₂O₃ promo-ted the antioxidation of the alloy.
- NiCoCr-Al₂O₃ foam alloy,
- electrodeposition,
- antioxidation in high temperature
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Electrodeposition of NiCoCr-Al₂O₃ Foam Alloy and its Antioxidation at High Temperatures