Galvanic corrosion in molten salts: A discussion of the corrosion mechanism of two-phase Ni-20Cr-20/30Cu alloys in eutectic (Li,K)(2)CO3 at 650 degrees C
文献类型：期刊论文
| 作者 | C. L. Zeng ; J. Li ; T. Zhou |
| 刊名 | Oxidation of Metals
 |
| 出版日期 | 2005 |
| 卷号 | 64期号:3-4页码:207-218 |
| 关键词 | ternary Ni-Cr-Cu alloys molten (Li K)(2)CO3 galvanic corrosion two-phase structure ni-ti alloys oxygen carbonate reduction behavior mixture li2co3-k2co3 oxidation steel |
| ISSN号 | 0030-770X |
| 中文摘要 | The corrosion of a Ni-20Cr and three ternary Ni-20Cr-Cu alloys containing 10, 20 and 30 wt.% Cu, respectively, in a eutectic (Li, K)(2)CO3 melt was studied at 650 degrees C under air. Ni-20Cr and Ni-20Cr-10Cu are solid-solution alloys, while both Ni-20Cr-20Cu and Ni-20Cr-30Cu are two-phase alloys composed of a Cu-depleted matrix together with a small amount of a Cu-rich phase. The results indicate that Ni-20Cr and Ni-20Cr-10Cu have similar corrosion rates, forming a scale of external NiO and inner Cr-rich oxides. The two-phase Ni-20Cr-20/30 Cu alloys corrode rapidly, producing a mixture of Ni-Cr-rich oxides and a Ni-Cu metallic phase, which may be ascribed to the accelerated corrosion of the Cu-depleted matrix coupled with the cathodic Cu-rich phase of the alloys. As compared to Ni-20Cr-30Cu, Ni-20Cr-20Cu suffers from more-severe corrosion, due to a smaller area fraction of the cathodic Cu-rich phase in the alloy. The galvanic corrosion mechanism is also discussed. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35192]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | C. L. Zeng,J. Li,T. Zhou. Galvanic corrosion in molten salts: A discussion of the corrosion mechanism of two-phase Ni-20Cr-20/30Cu alloys in eutectic (Li,K)(2)CO3 at 650 degrees C[J]. Oxidation of Metals,2005,64(3-4):207-218. |
| APA | C. L. Zeng,J. Li,&T. Zhou.(2005).Galvanic corrosion in molten salts: A discussion of the corrosion mechanism of two-phase Ni-20Cr-20/30Cu alloys in eutectic (Li,K)(2)CO3 at 650 degrees C.Oxidation of Metals,64(3-4),207-218. |
| MLA | C. L. Zeng,et al."Galvanic corrosion in molten salts: A discussion of the corrosion mechanism of two-phase Ni-20Cr-20/30Cu alloys in eutectic (Li,K)(2)CO3 at 650 degrees C".Oxidation of Metals 64.3-4(2005):207-218. |
入库方式： OAI收割
来源：金属研究所
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