The oxidation of two-phase Cu-Cr alloys under 10(-19) atm O-2 at 700-900 degrees C
文献类型：期刊论文
| 作者 | F. Gesmundo ; Y. Niu ; F. Viani ; D. L. Douglass |
| 刊名 | Oxidation of Metals
 |
| 出版日期 | 1998 |
| 卷号 | 49期号:1-2页码:147-167 |
| 关键词 | copper chromium two-phase alloys oxidation low oxygen pressures high-temperature oxidation 2-phase binary-alloys co-nb alloys low-oxygen pressures most-reactive component possible scaling modes low oxidant pressures h2-h2s mixtures 600-800-degrees-c corrosion |
| ISSN号 | 0030-770X |
| 中文摘要 | The oxidation of three Cu-Cr alloys containing 25, 50, and 75 wt.% Cr and having a two-phase microstructure has been studied at 700-900 degrees C in H-2-CO2 mixtures under 10(-19) atm O-2, i.e., below the stability of the copper oxides. At variance with the results obtained by oxidizing the same materials in air, the alloys corroded quite slowly and formed only external chromium-oxide scales rather than showing internal oxidation of chromium. In view of the quite small solubility of chromium in copper, lower than the critical value calculated for the transition from the internal to the external oxidation of chromium, this result is attributed mainly to a supply of chromium from the small Cr-rich particles present in the two-phase eutectic mixture, The corrosion kinetics followed the parabolic rate law to a reasonable approximation, but the rate constants changed rather irregularly as functions of temperature and alloy composition, The scaling rates were generally larger than those measured for pure chromium under the same oxygen pressure, but much smaller than those of the same alloys in air. These results are examined with special reference to the two-phase nature of the alloys. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37662]  |
| 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 | F. Gesmundo,Y. Niu,F. Viani,et al. The oxidation of two-phase Cu-Cr alloys under 10(-19) atm O-2 at 700-900 degrees C[J]. Oxidation of Metals,1998,49(1-2):147-167. |
| APA | F. Gesmundo,Y. Niu,F. Viani,&D. L. Douglass.(1998).The oxidation of two-phase Cu-Cr alloys under 10(-19) atm O-2 at 700-900 degrees C.Oxidation of Metals,49(1-2),147-167. |
| MLA | F. Gesmundo,et al."The oxidation of two-phase Cu-Cr alloys under 10(-19) atm O-2 at 700-900 degrees C".Oxidation of Metals 49.1-2(1998):147-167. |
入库方式： OAI收割
来源：金属研究所
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