海洋工况下航空发动机冷端叶片的冲蚀损伤与防护概述

围绕海洋环境下航空发动机的服役特点,针对发动机叶片在海洋/近岸地区不同气候条件下的工作状况,对发动机冷端叶片在腐蚀-冲蚀联合作用下的失效机制进行了梳理总结.对海洋环境下服役的发动机叶片防护涂层的相关研究进行了归纳,总结了不同叶片防护涂层的设计理念及其性能表现.对于航空发动机叶片的防护涂层,目前主要是以一元或多元金属氮化物涂层,和金属相与陶瓷相的键合涂层为主,两类涂层的设计目的在于通过控制涂层中的相含量来调控涂层的强韧比和耐磨耐蚀性.

Overview of Erosion Damage and Protection of Cold End Blades of Aircraft Engine under Marine Conditions

Based on the service characteristics of aircraft engines in the marine environment, and according to the working conditions of the engine blades under different climatic conditions in the ocean/nearshore area, the failure mechanism of the cold-end blades of the engine under the combined action of corrosion and erosion was summarized. The related research on protective coatings of engine blades in marine environment is generalized and introduced, and the design concepts and performance of different protective coatings of blades are epitomized. The protective coatings of aero-engine blades are mainly one-or multi-element metal nitride coatings and bonding coatings of metal phase and ceramic phase now. The two types of coatings are designed to improve the strength-to-toughness ratio and wear and corrosion resistance of the coating by controlling the phase content in the coating.