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首页> 美国政府科技报告 >Testing Erosion-Resistant Chromium Carbide Plasma Coatings on the TVA Paradise Unit-2 Intermediate Pressure Turbine
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Testing Erosion-Resistant Chromium Carbide Plasma Coatings on the TVA Paradise Unit-2 Intermediate Pressure Turbine

机译：在TVa paradise Unit-2中压涡轮机上测试耐冲蚀的碳化铬等离子涂层

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Solid particle erosion (SPE) is caused by oxide particles in steam. Hard oxide particles exfoliate from the inside surfaces of boiler tubes and steam lines and are carried by the steam to the turbine where they impact and erode stationary and moving turbine parts (nozzles, moving blades, stationary blades, seal strips, and shrouds around the blades). The first stages of the high pressure (HP) and intermediate pressure (IP) turbines experience the greatest amount of SPE. Though many owners experience erosion in the first stages of both HP (main steam) and IP (reheat steam) turbines, TVA's principal erosion experience is in the IP or reheat steam turbines. This report is limited to the first few stages of IP turbines, referred to as ''first reheat stages.'' Hard chromium carbide plasma coatings have been developed. The coating was installed in Paradise Unit-2 IP turbine, 9th and 10th stages. Pretest inspection report is given. (ERA citation 11:050424)

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