Al-modified environmental barrier coatings for protection against water vapor corrosion
Source abstract
Abstract
High-temperature water vapor corrosion is a great challenge for long lifetime of Si/mullite/Yb 2SiO 5 Environmental Barrier Coatings. In this work, the Yb 3Al 5O 12 modified layer was in-situ synthesized on the surface of Yb 2SiO 5 layer to improve the steam resistance. The reaction mechanism of the Al-modified layer was explored. The steam corrosion experimental results indicated that the defects in Yb 2SiO 5 layer healed, and the oxidation rate of Si-bonded coating was slowed down under the protection of modified layer. Additionally, the calculation results of first-principle molecular dynamics confirmed that Yb 3Al 5O 12 has excellent steam corrosion resistance.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · High-Temperature Coating Behaviors · Semiconductor materials and devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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