Studies on corrosion resistance of Cu-40Ni alloy with different grain size in Cl- media
文献类型：期刊论文
| 作者 | Cao, ZQ; Liu, WH; Niu, Y; Wu, WT |
| 刊名 | RARE METAL MATERIALS AND ENGINEERING
 |
| 出版日期 | 2005-09-01 |
| 卷号 | 34页码:127-130 |
| 关键词 | mechanical alloying nanocrystal line Cu-Ni alloy corrosion electrochemistry |
| ISSN号 | 1002-185X |
| 通讯作者 | Cao, ZQ(caozhongqiu6508@sina.com) |
| 英文摘要 | The corrosion mechanism and corrosion-resistance of Cu-40Ni alloy prepared by conventional casting (CA), mechanical alloy (MA) and hot-pressing processes with the great grain size difference in Cl- media were investigated by PARM273A and M5210 electrochemical apparatus through potentiodynamic polarization method and electrochemical impedance spectroscopy (EIS) technique. Results show that MA and CA Cu-40Ni alloy have similar corrosion law. The corrosion potential of Cu-40Ni alloy moves positively and corrosion rate increases with the increase of Cl- concentration in Na2SO4+NaCl media. Electrochemical impedance spectroscopy (EIS) is composed of double loops. Polarization resistance decreases and at the same time interface capacity increases with the increase of Cl(-)concentration. With the decreasing of grain size, capacitive loop becomes smaller. Because Cl- decreases oxidation-reduction potential by chemical reaction and replaces O-2- in Cu2O and breaks passive oxide films on the alloy surface at the same time, corrosion rate of alloys become higher. Corrosion rate of MA Cu-40Ni alloy is higher than that of CA Cu-40Ni alloy evidently in Na2SO4+NaCl medium. |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000232210400032 |
| 出版者 | NORTHWEST INST NONFERROUS METAL RESEARCH |
| 源URL | [http://ir.imr.ac.cn/handle/321006/84403]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Cao, ZQ |
| 作者单位 | 1.Shenyang Normal Univ, Expt Ctr, Shenyang 110034, Peoples R China 2.Met Res Inst, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, ZQ,Liu, WH,Niu, Y,et al. Studies on corrosion resistance of Cu-40Ni alloy with different grain size in Cl- media[J]. RARE METAL MATERIALS AND ENGINEERING,2005,34:127-130. |
| APA | Cao, ZQ,Liu, WH,Niu, Y,&Wu, WT.(2005).Studies on corrosion resistance of Cu-40Ni alloy with different grain size in Cl- media.RARE METAL MATERIALS AND ENGINEERING,34,127-130. |
| MLA | Cao, ZQ,et al."Studies on corrosion resistance of Cu-40Ni alloy with different grain size in Cl- media".RARE METAL MATERIALS AND ENGINEERING 34(2005):127-130. |
入库方式： OAI收割
来源：金属研究所
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