Abstract
Thermal barrier coating systems with different bond coats were fabricated on polymer matrix composites via the air plasma spray process. During a thermal shock test at 400 °C, Zn and Al interlayers were helpful in improving the thermal shock resistance of coatings due to the low melting point. The coating system consisted of a soft zinc layer as a bond coat, and YSZ as a top coat exhibited the best thermal shock resistance, attributed to the lower residual stress and lower thermal stress in the Zn interlayer. The failure mechanism of the coating system was mainly ascribable to the residual stress derived from the deposition process, thermal stress, and further damage of the substrate.
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This work was financially supported by the projects of NSFC-21171160, NSFC-21221061, NSFC-21001017, and NSFC-51173178, the National Basic Research Program of China (973 Program) (2010CB631100), and State Key Laboratory of Rare Earth Resources Utilization (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences) (RERU2011018).
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Huang, W., Zhao, Y., Fan, X. et al. Effect of Bond Coats on Thermal Shock Resistance of Thermal Barrier Coatings Deposited Onto Polymer Matrix Composites Via Air Plasma Spray Process. J Therm Spray Tech 22, 918–925 (2013). https://doi.org/10.1007/s11666-013-9942-7
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DOI: https://doi.org/10.1007/s11666-013-9942-7