Research Progress in Suspension Plasma Spraying Thermal Barrier Coatings
MATERIALS CHINA[ISSN:1674-3962/CN:61-1473/TG]
- Issue:
- 2026年08
- Page:
- 90-99
- Research Field:
- Publishing date:
Info
- Title:
- Research Progress in Suspension Plasma Spraying Thermal Barrier Coatings
- Author(s):
- PENG Feifei; ZOU Lanxin; LIANG Likang; HE Qing; LIU Hongli; GUO Lei
- 1. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;
2. State Key Laboratory of Precious Metal Functional Materials, Tianjin 300072, China;
et al.
- Keywords:
- 1. School of Materials Science and Engineering; Tianjin University; Tianjin 300072; China; 2. State Key Laboratory of Precious Metal Functional Materials; Tianjin 300072; China
- CLC:
- PACS:
- -
- DOI:
- -
- DocumentCode:
- Abstract:
- Thermal barrier coatings (TBCs) is a critical surface protection technology for hot-end components in aviation engines and gas turbines, significantly enhancing their operational reliability and service life under harsh engine conditions by reducing their surface temperatures. TBC preparation technologies include atmospheric plasma spraying (APS), electron beam physical vapor deposition (EB-PVD), plasma physical vapor deposition (PS-PVD), and suspension plasma spraying (SPS). Among these, SPS addresses transportation challenges associated with nanoscale powder spraying through liquid-phase feeding, enabling cost-effectively fabricating TBCs with low thermal conductivity and high strain tolerance, making it highly promising for practical applications. This review summarizes recent advancements in SPS TBC development: introducing the technical principles and coating deposition mechanisms; elucidating formation mechanisms of two typical coating structures—columnar and vertical crack patterns; analyzing how suspension characteristics (solvent type, solute particle size, solid content, dispersant), spraying parameters (power, plasma gas, spray distance, feed rate), and bond coat morphology influence coatings microstructure; reviewing research findings on the thermal conductivity, thermal cycling life, and high-temperature corrosion performance of SPS coatings, as well as the relationship between coating structure and properties; introducing progress in novel TBCs such as rare-earth-doped YSZ and rare-earth zirconates, as well as double-layer/multilayer structures; and finally outlining future research directions for SPS TBCs.
Last Update: 2026-06-30