| 几种合金在450℃/23MPa超临界水氧化环境中腐蚀行为研究 |
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| 引用本文： | 王琳琳,侯坤磊,查向东,欧美琼,马颖澈. 几种合金在450℃/23MPa超临界水氧化环境中腐蚀行为研究[J]. 稀有金属材料与工程, 2024, 53(1): 204-214 |
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| 作者姓名： | 王琳琳 侯坤磊 查向东 欧美琼 马颖澈 |
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| 作者单位： | 东北大学材料科学与工程学院,中国科学院金属研究所,中国科学院金属研究所,中国科学院金属研究所,中国科学院金属研究所 |
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| 摘 要： | 采用X射线衍射仪、扫描电子显微镜等分析手段，对比研究了4种典型镍基耐蚀合金在450℃/23MPa下Na3PO4、Na2SO4、NaCl超临界水溶液中的腐蚀行为。结果表明，50h后，合金表层均匀分布着短棒状、针状的腐蚀产物，主要组成为NiCr2O4,Cr2O3,NiO,Ni3(PO4)2,CrPO4和Na3PO4等。500h后，腐蚀层的厚度明显增大，依据腐蚀层厚度的增大速度，4种合金的耐蚀性顺序为：X-1#>X-2#>625>C-276。
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| 关 键 词： | 镍基合金 超临界水氧化 腐蚀行为 |
| 收稿时间： | 2023-01-07 |
| 修稿时间： | 2023-02-07 |
Corrosion behavior of several alloys in supercritical water oxidation environment at 450℃/23MPa |
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| Wang linlin,houkunlei,Zhaxiangdong,oumeiqiong and mayingche. Corrosion behavior of several alloys in supercritical water oxidation environment at 450℃/23MPa[J]. Rare Metal Materials and Engineering, 2024, 53(1): 204-214 |
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| Authors: | Wang linlin houkunlei Zhaxiangdong oumeiqiong mayingche |
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| Affiliation: | Northeastern University,,,, |
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| Abstract: | The corrosion behavior of four typical Ni-based corrosion-resistant alloys in supercritical aqueous solution of Na3PO4, Na2SO4 and NaCl at 450 ℃/23 MPa was studied by using XRD, SEM, etc. After corrosion for 50 h, the surface of the alloys was covered with short rod-shaped and needle-shaped products mainly consisting of NiCr2O4，Cr2O3，NiO，Ni3(PO4)2，CrPO4 and Na3PO4. With the prolong of time, the thickness of the corrosion layers increased and the corrosion resistance was ranked as X-1#>X-2#>625>C-276 |
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| Keywords: | Nickel based alloy Supercritical Water Oxidation Corrosion behavior |
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