Abstract
Introduction
Plasma spraying is one of the most versatile and sophisticated thermal spraying methods to deposit powders as dense coatings with low porosity owing to its high plasma temperatures. However, the existence of the microdefects and residual stress generated during the plasma-spraying process could limit the use of the coatings to low-stress applications. Hence, how to establish the process–microstructure–property maps and relations of plasma-sprayed coatings became a concern.
Objective
The aim of this paper was to summarize some foundational researches on the structure integrity and life prediction of plasma-sprayed coating-based systems.
Method
Three different topics were involved, i.e., the microstructural integrity of coatings relating to the processing parameters, the thermomechanical integrity of the coating-based systems with residual stresses, and the durability of coatings under the applied loading conditions.
Conclusion
These studies would provide some important insights for improving the operation stability and providing the fail-safe design methodologies for coating-based systems.
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Acknowledgments
The authors are grateful for the support by the National Natural Science Foundations of China (51175177) and the Program for New Century Excellent Talents in University.
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Doc. IIW-2259, recommended for publication by Commission I “Thermal Cutting and Surfacing”.
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Zhang, X. Several fundamental researches on structural integrity of plasma-sprayed coating-based systems. Weld World 57, 189–202 (2013). https://doi.org/10.1007/s40194-012-0014-2
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DOI: https://doi.org/10.1007/s40194-012-0014-2