Interaction of surface laser treatment upon ZrO_2-Y_2O_3 ceramic coating structure obtained by means of air plasma spraying

摘要

The subject of the analysis and examination is the structure and utilitarian properties of thin ceramic layers placed on the nickel base heat-resistant alloy by plasma spraying method, which later on underwent laser remelting. Examined materials consisting of outer coating ZrO_2+8%wt.Y_2O_3 and NiCrAlY layer are to be used as thermal barriers and protection against high temperature corrosion of heat-resisting alloy on nickel base, applied on internal combustion turbine blades and other construction elements working under stress in high temperature conditions.