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Advances in Materials Research
  Volume 8, Number 4, December 2019 , pages 275-293

Experimental and numerical investigation on gas turbine blade with the application of thermal barrier coatings
Abdul Aabid, Jyothi, Jalal Mohammed Zayan and Sher Afghan Khan

    The engine parts material used in gas turbines (GTs) should be resistant to high-temperature variations. Thermal barrier coatings (TBCs) for gas turbine blades are found to have a significant effect on prolonging the life cycle of turbine blades by providing additional heat resistance. This work is to study the performance of TBCs on the high-temperature environment of the turbine blades. It is understood that this coating will increase the lifecycles of blade parts and decrease maintainence and repair costs. Experiments were performed on the gas turbine blade to see the effect of TBCs in different combinations of materials through the air plasma method. Three-layered coatings using materials INCONEL 718 as base coating, NiCoCrAIY as middle coating, and La2Ce2O7 as the top coating was applied. Finite element analysis was performed using a two-dimensional method to optimize the suitable formulation of coatings on the blade. Temperature distributions for different combinations of coatings layers with different materials and thickness were studied. Additionally, three-dimensional thermal stress analysis was performed on the blade with a commercial code. Results on the effect of TBCs shows a significant improvement in thermal resistance compared to the uncoated gas turbine blade.
Key Words
    materials; turbine blade; coatings; thermal analysis; finite element method; plasma spray
(1) Abdul Aabid, Jalal Mohammed Zayan, Sher Afghan Khan:
Department of Mechanical Engineering, Faculty of Engineering, International Islamic University Malaysia, P.O. Box No. 10, 50728, Kuala Lumpur, Malaysia;
(2) Jyothi:
Department of Aeronautical Engineering, Faculty of Engineering and Technology, Khaja Bandanawaz University, Rauza-I Buzurg, Kalaburagi (Gulbarga), 585104, Karnataka, India.

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