Micro-Nano Dual-Scale Coatings Prepared by Suspension Precursor Plasma Spraying for Resisting Molten Silicate Deposit

Authors:
Open Access
Publisher website
Google Scholar
Abstract
Yb-doped Y2O3 stabilized ZrO2 (YbYSZ) coatings, developed through solution precursor plasma spraying (SPPS), are engineered to resist calcium–magnesium–alumino–silicate (CMAS) infiltration by leveraging their unique micro-nano structures. This provides superior anti-wetting properties, crucial for preventing CMAS penetration at high temperatures. The investigation focused on the structural and compositional changes in YbYSZ-SPPS coatings subjected to prolonged thermal exposure at 1300 °C. Results indicate that while the coatings undergo significant sintering, leading to densification and microstructural evolution, the elemental composition and phase stability remain largely intact after up to 8 h of heat treatment. Despite some reduction in CMAS resistance, the coatings maintained their overall protective performance, demonstrating the potential of SPPS coatings for long-term use in high-temperature environments where CMAS infiltration is a concern. These findings contribute to the development of more durable TBCs for advanced thermal protection applications.
Funding Information
  • National High Technology Research and Development Program of China (2023YFB3711200, 52175136, 52130511, P2021-A-IV-002, 2022a05020004)
  • National Natural Science Foundation of China (2023YFB3711200, 52175136, 52130511, P2021-A-IV-002, 2022a05020004)
  • Science Center for Gas Turbine Project (2023YFB3711200, 52175136, 52130511, P2021-A-IV-002, 2022a05020004)
  • Shanghai Joint Innovation Program in the Field of Commercial Aviation Engines, Shanghai Gaofeng Project for University Academic Program Development, and Key Research and Development Projects in Anhui Province (2023YFB3711200, 52175136, 52130511, P2021-A-IV-002, 2022a05020004)

This publication has 36 references indexed in Scilit: