Study of Abradable Seal Coating with Nanostructure Y-PSZ Reference-Phase Used in High Temperature

The preliminary performance of the abradable seal coating used in high temperature was researched.The tiny,soft and aggregated material powder compounded by Y-PSZ matrix,tender material and pore-forming component was prepared for the abradable seal coating.Then the coating was deposited triumphantly on the 1Cr18Ni9Ti alloy by means of APS,the thickness was more than 1.0mm.Microstructure,superficial Rockwell hardness and adhesive strength were analyzed and discussed.It was found that the superficial Rockwell hardness of the coating was in the distribution of HR45Y 30～55,the coating which was provided with 30% porosity had condign adhesive strength and hardness to satisfy the requirement.