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| 显微组织对Cu—Cr—Ni合金高温氧化行为的影响 | |
| 引用本文： | 曹中秋,牛焱,F.Gesmundo. 显微组织对Cu—Cr—Ni合金高温氧化行为的影响[J]. 中国有色金属学报, 2001, 11(3): 394-397 |
| 作者姓名： | 曹中秋 牛焱 F.Gesmundo |
| 作者单位： | 1. 中国科学院;辽宁大学化学科学与工程学院 2. 中国科学院 3. Universita di Genova, Fiera del Mare, |
| 基金项目： | 国家自然科学基金资助项目(50071058);国家杰出青年基金资助项目(597215101) |
| 摘 要： | 研究了两种单／双相Cu-Cr-Ni合金的高温氧化行为。结果表明，合金氧化动力学偏离抛物线规律，其瞬时抛物线速率常数随时间延长而降低。两种合金表面氧化膜的结构差别较大，单相合金表面形成－连续的Cr2O3层，双相合金表面氧化膜外层是一边疆的CuO层，Ni和Cr的氧化发生在合金内部，这种合金与氧化物共存的混合内氧化与经典的内氧化明显不同，氧化层最里面形成了一连续的CrO3膜，抑制了合金的进一步氧化。 |
| 关 键 词： | Cu－Ni－Cr合金 高温氧化 铜合金 显微组织 |
| 文章编号： | 1004-0609(2001)03-0394-04 |
| 修稿时间： | 2000-08-18 |
Effect of microstructureon high-temperature oxidation of Cu-Cr-Ni alloys |
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| CAO Zhong qiu ,,NIU Yan ,F. Gesmundo. Effect of microstructureon high-temperature oxidation of Cu-Cr-Ni alloys[J]. The Chinese Journal of Nonferrous Metals, 2001, 11(3): 394-397 | |
| Authors: | CAO Zhong qiu NIU Yan F. Gesmundo |
| Affiliation: | CAO Zhong qiu 1,2,NIU Yan 1,F. Gesmundo 3 |
| Abstract: | The high temperature oxidation behavior of both single/double phase Cu Cr Ni alloys was studied . The kinetics for oxidation of both alloys are particularly irregular and deviate from the parabolic rate law and their instantaneous rates decrease with time in creasing. Oxide scale structures for both alloys are completely different, single phase alloy forms a continuous Cr 2O 3 outer layer, while double phase alloy produces a CuO outer layer, nickel and chromium are mainly oxidized inside the alloy, the microstructure of the internal oxidation region containing a mixture of alloy and oxide phases does not correspond to a classical internal oxidation. The further oxidation is restrained because there is a nearly continuous Cr 2O 3 layer inside the alloy. [ |
| Keywords: | Cu Cr Ni alloy single/double phase morphology high temperature oxidation |
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