To reduce the thermal stress at clad layer and further crack generation in laser cladding process, a method of controlling cracks by changing energy density is proposed. Comparative thermal–mechanical coupling finite element analysis was performed on uniform rectangular convex shape beam spot processes plasma-sprayed MCrAlY coating through numerical simulation based ANSYS software. Results show...

Abradable coatings are essentially sealing materials and deposited by thermal spray techniques. The main function of these is to control the clearance gas path turbine engines. abradable coating prevents blade damage abrading itself when there an offset or vibration during operation. Since meant abrade, preferred material relatively softer than material. As prone solid particle erosion at high ...

High-performance gas turbines and aircraft engines necessitate MCrAlY (M = Ni, Co, or Ni/Co) coatings with exceptional oxidation resistance. Pre-heat-treatment can enhance the performance of bond in following ways: First, it reduces porosity coating promotes diffusion elements within it. Second, pre-heat-treatment allows for formation a continuous, dense, moderately thick layer pure Al2O3 scale...