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Advanced High-Velocity Oxygen-Fuel Coating and Candidate Materials for Protecting LP Steam Turbine Blades Against Droplet Erosion

机译:先进的高速氧气燃料涂层和候选材料可保护LP汽轮机叶片免受液滴侵蚀

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This paper describes the water droplet erosion characteristics of advanced high-velocity oxygen-fuel (HVOF) coating and the materials used for steam turbine blading. For droplet erosion study, round samples as per ASTM G73-98 ("Standard Practice for Liquid Impingement Erosion Testing," Vol 03.02, Annual Book of ASTM Standards, ASTM, 2004) were selected. The materials commonly used for steam turbine blading are X20Crl3, X10CrNiMoV122, and Ti6A14V. During incubation as well as in the long run, advanced HVOF coating has performed much better than all these materials. This is due to enhanced particle kinetic energy caused by optimum flow of oxygen and fuel injection by modifying the fuel injector. Droplet erosion test results of these materials and advanced HVOF coating along with their properties and damage mechanism are reported and discussed in this paper.
机译:本文介绍了先进的高速氧气燃料(HVOF)涂层的水滴侵蚀特性以及用于汽轮机叶片的材料。为了进行液滴侵蚀研究,选择了根据ASTM G73-98(“液体冲击侵蚀测试的标准实践”,第03.02卷,ASTM标准年鉴,ASTM,2004)制成的圆形样品。通常用于汽轮机叶片的材料是X20Crl3,X10CrNiMoV122和Ti6A14V。在培养过程中以及从长远来看,高级HVOF涂层的性能要比所有这些材料都要好得多。这是由于通过修改燃料喷射器而获得的最佳氧气流量和燃料喷射所导致的增强的粒子动能。本文报道并讨论了这些材料和高级HVOF涂层的液滴腐蚀测试结果,以及它们的性能和破坏机理。

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