Thermal Cycling Life of Porous Ceramic Coatings Subjected to Thermal Gradient and Coolant Pressure

Masayuki Arai; T. Hayashi; T. Suidzu

doi:10.4028/www.scientific.net/KEM.627.293

Paper Titles

Numerical Simulation of Modified Compact Tension Test Depicting of Experimental Measurement by ARAMIS
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Wedge Splitting Test of Foam Concrete Specimens: Calibration Curves
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Numerical Simulation for Mechanical Behavior of Carbon Black Filled Rubber Composites Based on Cubic Representative Volume Element
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Numerical Analysis of Three-Dimensional Semi-Elliptical Interfacial Cracks Subjected to Indentation Load
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Thermal Cycling Life of Porous Ceramic Coatings Subjected to Thermal Gradient and Coolant Pressure
p.293

Deviations of Microcrack during Propagation in Thin Films of Austenitic Steel and Accompanying Accommodative Processes
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Comparison of Artificial Neural Networks and the Transfer Function Method for Force Reconstruction in Curved Composite Plates
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Fatigue Crack Growth Rates and Tensile Strength of Titanium Produced by Means of Selective Laser Melting
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Comparison of Full Field and Single Inclusion Approaches to Homogenization of Composites with Non-Ellipsoidal Pores
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Thermal Cycling Life of Porous Ceramic Coatings Subjected to Thermal Gradient and Coolant Pressure

Abstract:

A transpiration cooling system for gas turbine applications has significant benefit to reduce the amount of cooling air and to increase cooling efficiency. We had developed a porous ceramic coating deposited by plasma spraying process, which can infiltrate cooling gas, and examined about those mechanical properties. In this study, thermal cycling life of this porous ceramic coating is revealed in order to apply this technology to advanced gas turbine blade in practical use. The thermal cycling test is conducted by using the hand-made device which can heat cyclically up and down around the surface of the porous coating while infiltrating cooling gas. The number of thermal cycles up to reach the coating delamination is related with maximum exposed temperature and pressure of the cooling gas as the test condition, consequently.