Corrosion behavior of YxYb(2−x)Si2O7 environmental barrier coating materials against molten calcium-magnesium-aluminosilicate (CMAS) at 1475 °C
Source abstract
Abstract
The molten calcium-magnesium-aluminosilicate (CMAS) corrosion resistance of a series of Y xYb (2−x)Si 2O 7 (x = 0.3, 0.5, 0.8, 1.0) environmental barrier coating (EBC) materials were systematically investigated at 1475 °C. The results have shown that the precipitate apatite Ca 2(Y/Yb) 8(SiO 4) 6O 2 formed after CMAS corrosion of Y xYb (2−x)Si 2O 7 pellets. The reactivity of Y xYb (2−x)Si 2O 7 pellets and CMAS increased with the increase of Y 3+/Yb 3+ ratio, leading to the thickest reaction layer formed in Y 1.0Yb 1.0Si 2O 7. Furthermore, “blister” cracks were not found at the zone of uncorroded Y xYb (2−x)Si 2O 7 pellets. It demonstrated that the Y xYb (2−x)Si 2O 7 materials have excellent CMAS corrosion resistance, which can serve as promising candidates for EBC against CMAS corrosion.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Nuclear materials and radiation effects · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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