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作者研制了一种MCrAlX型多元涂层并应用于工业生产,以提高燃气轮机导向叶片(K18合金)的抗热腐蚀能力。简述了涂层工艺,测定了涂层的耐热腐蚀性能,分析了涂层的成份组织和结构,复验了涂层后的机械性能,研究了涂层长期时效的稳定性及料浆成份对涂层组织性能的影响。本涂层适合大规模生产,其热腐蚀寿命比基体约高20倍.
The authors developed a multi-layer coating of MCrAlX and applied it to industrial production to improve the hot corrosion resistance of the gas turbine guide vane (K18 alloy). The coating process was briefly described. The heat-corrosion resistance of the coating was measured. The composition and structure of the coating were analyzed. The mechanical properties of the coating were reexamined. The stability of the coating and the composition of the slurry Impact on the properties of the coating. The coating is suitable for large-scale production, the hot corrosion life of about 20 times higher than the substrate.