High temperature oxidation of the three-phase alloys Cu-20Ni-30Cr and Cu-20Ni-40Cr under a low oxygen pressure
文献类型：期刊论文
| 作者 | X. J. Zhang ; M. Al-Omary ; Y. Niu |
| 刊名 | High Temperature Materials and Processes
 |
| 出版日期 | 2005 |
| 卷号 | 24期号:3页码:175-182 |
| 关键词 | Cu-Ni-Cr three-phase oxidation low oxygen pressure 2-phase binary-alloys low oxidant pressures most-reactive component coupled internal oxidation possible scaling modes cu-cr alloys ternary alloys external oxidation air oxidation 1-atm o-2 |
| ISSN号 | 0334-6455 |
| 中文摘要 | The oxidation of two ternary Cu-Ni-Cr alloys containing approximately 30 and 40 at.% Cr, but with a similar Ni content, Cu-20Ni-30Cr and Cu-20Ni-40Cr, was studied at 973-1073 K in H-2-CO2 mixtures providing an oxygen pressure of 10(-19) atm, below the dissociation pressure of nickel and copper oxides. Both alloys are composed of a mixture of three phases, where the phase with the largest copper and lowest chromium content (alpha) forms the matrix and contains a dispersion of particles of the other two phases, one with an intermediate content of Ni and Cr (beta) and another richest in chromium (gamma). The oxidation kinetics of the two alloys at both temperatures exhibited a transition from a first stage, which was nearly parabolic except for Cu-20Ni-40Cr at 1073 K, to a second parabolic stage with a reduced rate constant. Both alloys formed a continuous external chromia scale after 24h oxidation at the two temperatures. The internal oxidation of chromium was essentially absent from the two alloys. The oxidation mechanism is discussed by taking into account the possible effects of the presence of three phases in the oxidation of ternary alloys. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35232]  |
| 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 | X. J. Zhang,M. Al-Omary,Y. Niu. High temperature oxidation of the three-phase alloys Cu-20Ni-30Cr and Cu-20Ni-40Cr under a low oxygen pressure[J]. High Temperature Materials and Processes,2005,24(3):175-182. |
| APA | X. J. Zhang,M. Al-Omary,&Y. Niu.(2005).High temperature oxidation of the three-phase alloys Cu-20Ni-30Cr and Cu-20Ni-40Cr under a low oxygen pressure.High Temperature Materials and Processes,24(3),175-182. |
| MLA | X. J. Zhang,et al."High temperature oxidation of the three-phase alloys Cu-20Ni-30Cr and Cu-20Ni-40Cr under a low oxygen pressure".High Temperature Materials and Processes 24.3(2005):175-182. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。