CMAS Corrosion Behavior of Mid-Entropy Rare-Earth Hafnate (Y0.3Gd0.3Yb0.4)4Hf3O12 as Thermal Barrier Coating Candidate
Fuxing Ye, Yuan Yao, Fanwei Meng, Tianyuan Luo, Tomasz Sadowski, Eligiusz Postek · 2024
Read CMAS Corrosion Behavior of Mid-Entropy Rare-Earth Hafnate (Y0.3Gd0.3Yb0.4)4Hf3O12 as Thermal Barrier Coating Candidate by Fuxing Ye, Yuan Yao, Fanwei Meng, Tianyuan Luo, Tomasz Sadowski, Eligiusz Postek (2024) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-11642701.txt.
Description
Fuxing Ye and co-authors test in 2024 a new coating candidate for jet engine parts that must shrug off molten mineral deposits at high heat. Such deposits, called CMAS, eat into thermal barrier coatings as engines run hotter. Their material is a rare earth hafnate mixing three rare earths in set shares, made by an ultrafast high temperature firing method.
During corrosion tests, a dense reaction layer formed whose main crystal phase is favored by low formation energy and by the mix's entropy. That layer slowed further entry of the molten deposit. The unlike sizes of the rare earth ions also warped the crystal lattice, which slowed ion movement and delayed the attack. The authors present the hafnate as a strong candidate for the next generation of heat barrier coatings in aero engines.
Catalog record
| CREATOR | Fuxing Ye, Yuan Yao, Fanwei Meng, Tianyuan Luo, Tomasz Sadowski, Eligiusz Postek |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 29 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |