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为了研究在海洋环境下船用燃气轮机高温材料的严重热腐蚀问题,我所在试验室里建立了一种研究高温合金热腐蚀性能的模拟试验方法-动态燃烧室热腐蚀试验。利用此方法,我们对国产高温合金进行了对比试验,积累了大量数据。本文主要通过对长期运行的工业燃气轮机一级涡轮叶片腐蚀形态和腐蚀产物组成的分析与本试验室在不同温度和高盐浓度下合金试样的腐蚀形态和腐蚀产物组成的分析对比。试图证明如下几方面的问题: (1)动态燃烧室燃气热腐蚀试验方法的有效性和可靠性; (2)K38合金热腐蚀的发展阶段; (3)动态燃烧室热腐蚀试验条件下合金抗蚀性和长期运行的工业燃气轮机一级涡轮叶片寿命之间关系的初步探讨。
In order to study the serious hot corrosion problem of high temperature materials for marine gas turbines in marine environment, a simulation test method for hot corrosion behavior of superalloys was developed in our laboratory - hot chamber corrosion test. Using this method, we made a comparative test of domestic superalloys and accumulated a large amount of data. In this paper, the analysis of corrosion morphology and composition of corrosion products of the first-stage turbine blades of a long-running industrial gas turbine is compared with the corrosion morphology and composition of the corrosion products of the laboratory samples under different temperatures and high salt concentrations. Trying to prove the following problems: (1) the dynamic combustion chamber gas hot corrosion test methods of validity and reliability; (2) K38 alloy hot corrosion stage of development; (3) dynamic combustion chamber hot corrosion test conditions alloy resistance Preliminary Discussion on the Relationship between Erosivity and Long - term Operating Life of Turbine Blades for Industrial Gas Turbines.