Chemical and mechanical properties of modified Yb2Si2O7 environmental barrier coatings corroded by a silicate melt
Source abstract
Abstract
The chemical and mechanical properties of plasma-spray-modified Yb 2Si 2O 7 environmental barrier coatings were investigated after corrosion by a low silicate melt surface concentration at 1315 °C for 1 h. X-ray diffraction, simultaneuos thermal analysis, electron probe microanalysis, electron microscopy, and nanoindentation testing were used to probe coating samples. Garnet was favored to form over apatite in coatings with alumina content higher than 1–2 mol%. Garnet formation arrested corrosion through removal of the melt components. The corroded and heat-treated coatings exhibited a higher overall percentage of enhancement to the Young’s modulus and hardness results when compared to as-deposited coating samples.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · High-Temperature Coating Behaviors · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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