涡轮发动机叶片的激光表面强化

Laser Hardfacing of Turbine Engine Blade

用钴基会金粉对镍基涡轮发动机叶片进行激光强化。从避免强化层和基体开裂的角度出发，研究了变质剂对强化层组织和化学成分的影响。高温涂盐腐蚀实验表明，经钴基合金强化的表面层，其耐蚀性明显提高。

The application of a cobalt-based hardfacing alloy to a nickel-based turbineengine blade ,s discussed in this paper. Proceeding in the point of view to avoid cracking in thehardfacing layer and in the matrix, the influence to the structure and the chemical composition of the hardfacing layer caused by metamophic materials is studied. The resultof high temperaturecorrosion test with salt coating shows that the corrosion resistant ability of the cobalt-basedhardfacing layer is improved clearly.