Cold gas-dynamic spraying of wear resistant alloys on turbine blades

摘要

A new method for increasing the durability of a turbine engine is provided. The method utilizes a cold gas-dynamic spray technique to apply wear resistant materials to turbine blades. These wear resistant materials improve the durability of the turbine blades, and thus can improve the overall durability, reliability and performance of the turbine engine themselves. In the cold gas-dynamic spray process particles at a temperature below their fusing temperature are accelerated and directed to a target surface on the turbine blade. When the particles strike the target surface, the kinetic energy of the particles is converted into deformation of the particle, causing the particle to form a strong bond with the target surface. Post-spray processing is then performed to consolidate the coating materials and restore material properties in the turbine blade. Thus, the cold gas-dynamic spray process can apply a coating of wear resistant materials to the turbine blades.