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Effect of the Bond Coating Surface Morphology on Ceramic Splat Construction

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Abstract

In this work, yttria-stabilized zirconia splats deposited onto different bond coatings were characterized. The influence of both substrate topography and temperature on splat morphologies was investigated. The substrate surface was described using a method characterized by multi-level roughness. On non-heated substrate, the peak-valley structure in scale of micrometer contributed to the formation of crater-like holes on splats. The amount of such holes was reduced with the increase of substrate temperature. It was also observed that on micro-smooth surface, island-like fragments in the center of splat would warp and their edges could be detached from the underlying substrate, especially when the substrate was heated. The obtained results reveal that the influence of substrate pre-heating on the splat formation is realized via thinning the air film near substrate surface.

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Acknowledgments

This work was jointly supported by the National Natural Science Foundations of China (NSFC) under the Grant No. 51202277 and Young Scholar Project (No. 12ZR1452000) supported by the Shanghai Science and Technology Committee. The current work was also supported by the Major Program for Basic Research of Shanghai Science and Technology Committee (Grant No. 12DJ1400402).

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Authors and Affiliations

  1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People’s Republic of China

    Dachuan Li, Huayu Zhao, Xinghua Zhong, Chenguang Liu, Liang Wang, Kai Yang & Shunyan Tao

  2. Key Laboratory of Inorganic Coating Materials, Chinese Academy of Sciences, Shanghai, 201899, People’s Republic of China

    Dachuan Li, Huayu Zhao, Xinghua Zhong, Chenguang Liu, Liang Wang, Kai Yang & Shunyan Tao

  3. University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China

    Dachuan Li

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  1. Dachuan Li
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Correspondence to Shunyan Tao.

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Li, D., Zhao, H., Zhong, X. et al. Effect of the Bond Coating Surface Morphology on Ceramic Splat Construction. J Therm Spray Tech 24, 1450–1458 (2015). https://doi.org/10.1007/s11666-015-0334-z

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  • DOI: https://doi.org/10.1007/s11666-015-0334-z

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