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A coprecipitation–calcination method was used to synthesise powders of 25 mol% Y2O3 in ZrO2 (25YSZ) or 12.5 mol% Y2O3 - 12.5 mol% Yb2O3 in ZrO2 (12.5Yb12.5YSZ) solid solutions. The pellets were cold isostatically pressed and then sintered for 2 h at 1500oC. The corrosion resistance of 25YSZ, 12.5Yb12.5YSZ solid solutions, and CaZrO3-based samples against molten metals, i.e., copper, nickel or iron,...
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