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Purpose: The purpose of the research was identification of the influence of TBC coating system on oxidation resistance of TiAl based alloy during oxidation at temperature of 900 and 950 degrees centigrade for 500 h and 200 h respectively. Design/methodology/approach: The APS technique was used to modify and improvement of oxidation resistance of TiAl intermetallic alloy. As a bond coat the NiCrAlY...
Purpose: The purpose of the research was identification of the residual stress in the top coat of different type of thermal barrier coating with gradient of chemical composition and gradient of porosity. Design/methodology/approach: The APS technique was used to deposition of gradient coating. As a bond coat the NiCrAlY overlay coating was applied. Top-coat consist in the case of gradient of porosity...
Purpose: The purpose of the research was characterization of failure modes of air plasma sprayed thermal barrier coatings system in isothermal oxidation test conditions at 1100 degrees centigrade. Design/methodology/approach: The research allowed the identification of microstructural changes that take place during oxidation test of TBC system in area of ceramic top-layer, bond coat and superalloy...
Purpose: The article presents the outline of methods and range of microstructural assessment of ceramic coatings, using the example of thermal barrier coatings. The major structural parameters describing the quality of the barrier layers have been characterised as well as the problems related to the correct metallographic specimen preparation and the methodology of their assessment. Design/methodology/approach:...
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