展鑫, 陈月, 王栋, 谢光, 路松, 李龙飞, 冯强, 张健, 申健. Cr对钴基单晶高温合金热腐蚀行为的影响[J]. 中国腐蚀与防护学报, 10.11902/1005.4537.2026.166.
Xin Zhan, Yue Chen, Dong Wang, Guang Xie, Song LU, Longfei Li, Qiang Feng, Jian Zhang, Jian Shen. Effect of Cr on Hot Corrosion Behavior of Co-Base Single Crystal Superalloy[J]. Journal of Chinese Society for Corrosion and protection, 0, (): 0-.

摘要 相关文章 Metrics 全文: PDF(2256 KB)   摘要: 本文研究了两种不同Cr含量的钴基单晶高温合金在950 ℃，Na2SO4熔盐环境中的热腐蚀行为。结果表明，低Cr钴基高温合金发生严重的热腐蚀，腐蚀层疏松多孔且易剥落；而高Cr钴基高温合金则表现出显著提升的抗腐蚀性能。高Cr含量促进了相对连续且稳定的富Cr氧化层的形成，有效减缓了熔盐腐蚀合金基体与合金元素的外扩散，进而延缓了热腐蚀进程。 关键词 ： 钴基单晶高温合金,  热腐蚀,  Cr含量,  熔融盐     Abstract：Nickel-based single-crystal superalloys are widely used in turbine blades for aircraft engines and industrial gas turbines. In recent years, turbine inlet temperatures have been rising progressively to improve engine thrust and thermal efficiency, driving the service temperatures of superalloys further upward. The service temperature of single-crystal blades is approaching the melting point of the alloy. Cobalt-based superalloy, with its favorable high-temperature mechanical properties and higher melting point compared to nickel-based alloys, is expected to surpass the temperature limits of nickel-based superalloys. Therefore, cobalt-based alloys are regarded as a potential candidate material for the next generation of turbine blades. Industrial gas turbine blades are subjected to hot corrosion during service, and thus, the alloy should possess good resistance to hot corrosion. Cr is a key element in ensuring the corrosion resistance of nickel-based superalloys. However, the effect of Cr on the hot corrosion behavior of cobalt-based superalloys remains unclear and needs to be further investigated. In this paper, the hot corrosion behavior of Co-base single crystal superalloy with different Cr contents was investigated in Na₂SO₄ salt at 950 °C. The results indicate that alloys with low Cr content formed a porous corrosion layer susceptible to spalling, leading to severe hot corrosion. However, increasing the Cr content significantly enhances the corrosion resistance of Co-base superalloy. During hot corrosion, the higher content of Cr promotes the alloy to develop a continuous and stable Cr-rich oxide layer. This layer effectively reduces the corrosion of the alloy by the molten salt and suppresses the outward diffusion of alloying elements, thus delaying the process of hot corrosion. Key words： Co-base single crystal superalloy    Hot corrosion    Cr content    Molten Salts 收稿日期: 2026-05-28      基金资助:国家自然科学基金项目(52331005) 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 展鑫 陈月 王栋 谢光 路松 李龙飞 冯强 张健 申健 44.8K 链接本文: https://www.jcscp.org/CN/10.11902/1005.4537.2026.166      或      https://www.jcscp.org/CN/Y0/V/I/0 [1] 杨鑫, 车欣, 卢玉章, 黄亚奇, 王栋, 申健. 一种低Re二代单晶高温合金的热腐蚀行为研究[J]. 中国腐蚀与防护学报, 2026, 46(4): 1159-1168. [2] 彭文雅, 李帅, 李璞, 赵春玲, 鲍泽斌. (Ni, Pt)Al和NiCoCrAlYTa涂层对镍基单晶高温合金DD6抗热腐蚀性能的影响[J]. 中国腐蚀与防护学报, 2026, 46(2): 491-499. [3] 张金宇, 李欣, 张磊, 陈志华, 杜雨昕, 冯贺鑫, 张雪, 张洋鹏, 林如山, 李瑛, 戎利建. 几种17Cr系不锈钢在氯化物蒸汽中的腐蚀行为研究[J]. 中国腐蚀与防护学报, 2026, 46(2): 576-582. [4] 王乙初, 刘天龙, 张思倩, 赵利, 骆智超, 郑开宏. 含V、W高Mn奥氏体耐热钢在熔融Na2SO4 中的热腐蚀行为[J]. 中国腐蚀与防护学报, 2026, 46(2): 620-628. [5] 周小包, 王子腾, 任延杰, 董少阳, 甘浪, 李聪. 激光粉末床熔融成形CoCrNi中熵合金的高温热腐蚀行为[J]. 中国腐蚀与防护学报, 2026, 46(1): 115-125. [6] 杨潇文, 陈泽浩, 杨莎莎, 王群昌, 王金龙, 陈明辉, 王福会. 镍基单晶高温合金N5及其纳米晶涂层的短期热腐蚀行为研究[J]. 中国腐蚀与防护学报, 2026, 46(1): 252-260. [7] 叶俊, 罗鑫, 镇咸生, 李新平, 谢云, 彭晓. Inconel 718合金在750 ℃下不同气氛中的氧化与热腐蚀行为研究[J]. 中国腐蚀与防护学报, 2025, 45(6): 1528-1536. [8] 彭望, 陈荐, 杨凌旭, 刘会军, 梁建平, 曾潮流. NaCl对347H和GH3539在熔融硝酸盐中热腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2025, 45(6): 1610-1618. [9] 白英雄, 王艳丽, 李相伟, 吴泽峰, 张书彦. 热处理对激光选区熔化GH4099镍基高温合金900 ℃下(75%Na2SO4 + 25%NaCl)热腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2025, 45(6): 1709-1716. [10] 赵欣宇, 刘恩泽, 张功, 赵媛, 宁礼奎, 信昕, 贾丹, 刘伟华, 谭政. 不同温度下DD10合金钎焊接头热腐蚀行为研究[J]. 中国腐蚀与防护学报, 2025, 45(5): 1361-1370. [11] 张勇康, 翟海民, 李旭强, 李文生. Fe基非晶涂层在Na2SO4 + K2SO4 和Na2SO4 +NaCl混合盐中的热腐蚀行为研究[J]. 中国腐蚀与防护学报, 2025, 45(1): 92-102. [12] 黄勤英, 李彧卓, 阳颖飞, 任盼, 王启伟. Pt改性共晶高熵合金AlCoCrFeNi2.1 热腐蚀行为研究[J]. 中国腐蚀与防护学报, 2025, 45(1): 115-126. [13] 王粤, 耿树江, 王金龙, 王福会, 孙清云, 吴勇, 夏思瑶. K444合金表面CVD渗铝涂层耐高温95%Na2SO4 + 5%NaCl腐蚀行为研究[J]. 中国腐蚀与防护学报, 2025, 45(1): 127-136. [14] 喻政, 陈明辉, 王金龙, 杨莎莎, 王福会. 煤灰中碱金属硫酸盐和氯盐含量对HR3C和渗铝HR3C不锈钢腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2024, 44(6): 1389-1398. [15] 张金龙, 付广艳, 宁礼奎, 刘恩泽, 谭政, 佟健, 郑志. 两种热处理状态的镍基单晶高温合金在900℃下(Na2SO4 + NaCl)混合盐中热腐蚀行为研究[J]. 中国腐蚀与防护学报, 2024, 44(6): 1625-1632. Viewed Full text Abstract Cited   Shared      Discussed