Ablation behavior of Mo/MSZ thick alternate multilayer fabricated by combinative processes of plasma spray and hot isostatic pressing |
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| Affiliation: | 1. Southwest Institute of Technology and Engineering, Chongqing, 400039, China;2. College of Materials Science and Engineering, Chongqing University, Chongqing, 400045, China;1. Institute of Silicate Chemistry of the Russian Academy of Sciences ISC RAS, Makarova Emb. 2, Saint Petersburg, 199034, Russia;2. Institute of Earth Sciences, Saint Petersburg State University, Universitetskaya Emb. 7/9, Saint Petersburg, 199034, Russia;3. Chemistry Department, Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia;1. Institute of Solid State Chemistry UB RAS, 620041, 91, Pervomayskaya St., Yekaterinburg, Russia;2. Institute of Natural Science and Mathematics, Ural Federal University, 620000, 51 Lenin Av., Yekaterinburg, Russia;3. Laboratory of Hydrogen Energy, Ural Federal University, 620002, 19 Mira St., Yekaterinburg, Russia;1. Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, India;2. Department of Physics, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India;1. Mössbauer Research Group, Department of Physics, S.B. College, Changanassery, Kerala, 686101, India;2. Mahatma Gandhi University, Kottayam, Kerala, 686560, India;3. Smart Materials Section, Materials Characterization Group, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, 603102, India;4. Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, 400094, India;1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, China;2. School of Metallurgical Engineering, Liaoning Institute of Science and Technology, Benxi, 117004, China;3. Haicheng Far East Mining Co. Ltd, Anshan, 114200, China |
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| Abstract: | Thermal barrier and anti-ablation coatings play essential roles in protecting jet nozzles, gas turbine engines and other machines from high temperatures. In this work, a novel curved structure of Mo/MSZ alternate multilayer was designed and fabricated by air plasma spraying. Two steps of the hot isostatic pressing were applied to improve the mechanical strength and interlayer bonding. The alternate structure enabled thick MSZ (Magnesium oxide stabilized Zirconia) layers and show an excellent thermal insulation ability under high-temperature ablation (4.3 MW/m2). Due to the curved surface, the thermal and residual stress is larger at the outer layer and edge, leading to cracks at the most out layer during the ablation. Moreover, during the ablation, the surface suffered steps in the order of hot flush damaging, MSZ and Mo melting, mixing, and Mo oxidizing. This work provided design, reinforcing method and ablation behavior analysis of alternate multilayer of TBC, supporting a solution to increase the performance of thermal insulation and anti-ablation. |
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| Keywords: | Ablation behavior Air plasma spray Hot isostatic pressing Thermal barrier coating |
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