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| Home > Publications database > Thermal barrier coatings manufactured by suspension and solution precursor plasma spray—State of the art and recent progress |
| Contribution to a book | FZJ-2023-01244 |
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2023
Elsevier
Amsterdam [u.a.]
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Please use a persistent id in citations: doi:10.1016/B978-0-12-819027-2.00011-0
Abstract: In this chapter, basic knowledge on suspension plasma spraying and solution precursor plasma spraying is introduced. In addition, the state-of-the-art progress on SPS and SPPS is also summarized. The development of SPS/SPPS techniques has opened an exciting field of research for the plasma spray community. By using liquid feedstock instead of solid particles, delivering finer particles was realized. This imparts unique microstructure features to the SPS/SPPS coatings such as nano-sized architectures, vertical cracks, and columns. The unique structure imparts SPS/SPPS coatings superior properties than conventional coatings such as lower thermal conductivities, higher fracture toughness, and higher strain tolerance. These make SPS/SPPS very attractive process for depositing TBCs. Since the last two decades, more and more works have been devoted to understand the SPS/SPPS process and properties of the obtained coatings. Among the properties, thermal cycling lifetime is one of the most important one. Thermal cycling performance of SPS/SPPS coatings reported by different researchers shows great difference on lifetime and failure mode. Therefore, failure mechanism of SPS/SPPS coatings is still an open issue. Understanding the failure mechanism would shed light on the architecture design of the SPS/SPPS coatings.
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