为有效预防铸铁材料的腐蚀，提高船舶的安全性，研究船用铸铁耐高温甲酸腐蚀涂层抗高温腐蚀性能。制备纳米Fe粉体材料和添加了纳米Al粉和Cr3C2粉的Fe-Al/Cr3C2复合喷涂粉体材料以及指标甲酸溶液，利用正火态20钢制备铸铁试件M-1和M-2，将甲酸溶液作为腐蚀溶液，在不同高温环境下进行抗高温腐蚀性能测试。试验结果表明，铸铁涂层试件在高温甲酸溶液腐蚀后，涂层表明呈现不同程度凸起，该凸起为Al和Cr氧化物以及Fe氧化物，该氧化物对铸铁材料起到了保护膜作用，因此试件M-2的抗高温腐蚀性能较好；在相同高温甲酸溶液腐蚀环境下，试件M-2的质量损失数值也低于试件M-1，表明添加了纳米Al粉和Cr3C2粉的Fe-Al/Cr3C2复合喷涂粉体材料制备成的铸铁试件M-2抗高温腐蚀能力较强。
In order to effectively prevent corrosion of cast iron materials and improve the safety of ships, the high-temperature formic acid corrosion resistance performance of cast iron coatings for ships is studied. Preparation of nano Fe powder materials and Fe Al/Cr3C2 composite spraying powder materials with the addition of nano Al powder and Cr3C2 powder, as well as indicator formic acid solution. Cast iron specimens M-1 and M-2 were prepared using normalized 20 steel, and formic acid solution was used as the corrosion solution to test their high-temperature corrosion resistance in different high-temperature environments. The experimental results show that after corrosion in high-temperature formic acid solution, the cast iron coating specimen exhibits varying degrees of protrusions, which are Al and Cr oxides as well as Fe oxides. This oxide serves as a protective film for the cast iron material, so the high-temperature corrosion resistance of specimen M-2 is good; Under the same high-temperature formic acid solution corrosion environment, the mass loss value of specimen M-2 is also lower than that of specimen M-1, indicating that the cast iron specimen M-2 prepared by adding Fe-Al/Cr3C2 composite spraying powder material with nano Al powder and Cr3C2 powder has strong high-temperature corrosion resistance.
2024,46(3): 75-78 收稿日期：2023-09-27
DOI：10.3404/j.issn.1672-7649.2024.03.013
分类号：TB853.29
基金项目：江苏省高等学校基础科学（自然科学）研究面上项目（21KJB580010）
作者简介：刘昭亮(1990-),男,硕士,讲师,研究方向为轮机工程技术、船舶柴油机
参考文献：
[1] 路世盛, 周健松, 王凌倩, 等. 球墨铸铁表面激光熔覆Ni-Co复合涂层的耐腐蚀及高温摩擦学性能[J]. 中国表面工程, 2022, 35(3): 122-131.
[2] 廖鹏毅, 常湧, 高嘉辰. 接地网在高盐渍土壤环境下的腐蚀检测仿真[J]. 计算机仿真, 2022, 39(7): 101-104+361.
[3] 张昆, 黄灿, 熊嘉政, 等. 垃圾焚烧炉15CrMo钢管表面激光熔覆NiCrMo合金涂层的耐高温腐蚀性能[J]. 机械工程材料, 2021, 45(11): 29-33,37.
[4] 孙磊, 郭雨嘉, 张盼盼, 等. 激光合金化改性8YSZ热障涂层的抗热腐蚀性能研究[J]. 中国激光, 2023, 50(4): 12-22.
[5] 王杰, 佟世琪, 王进卿, 等. 有机聚硅氮烷先驱体陶瓷涂层的耐高温氯腐蚀性能[J]. 腐蚀与防护, 2021, 42(6): 8-13.
[6] 张学斌, 胡树森, 汪友路, 等. 高速火焰喷涂FeCoCrNiAlTi高熵合金涂层的耐高温氯腐蚀性能[J]. 表面技术, 2022, 51(8): 381-386.
