Effect of Ce-doping on the phase composition and aqueous stability of Gd2Hf2O7 ceramic as nuclear waste forms

Chen, Pengju; Tian, Tian; Zhang, Chenzhuo; Tang, Xian; Li, Zhuan

doi:10.1016/j.ceramint.2023.09.188

Ceramics International

2023

DOI: 10.1016/j.ceramint.2023.09.188

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Effect of Ce-doping on the phase composition and aqueous stability of Gd2Hf2O7 ceramic as nuclear waste forms

Pengju Chen,

Tian Tian,

Chenzhuo Zhang

et al.

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2024

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Cited by 2 publications

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Corrosion behavior of Gd2Hf2O7 ceramic exposed to Calcium-Ferrum-Alumina-Silicate (CFAS) melt at 1673 K

Chen,

He,

Pan

et al. 2024

Ceramics International

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Corrosion behavior of Gd2Hf2O7 ceramic exposed to Calcium-Ferrum-Alumina-Silicate (CFAS) melt at 1673 K

Chen,

He,

Pan

et al. 2024

Ceramics International

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Oxidation protection of tri‐layer La₂Zr₂O₇/Yb₂Si₂O₇/SiC‐coated C_f/SiC composites at high temperature

Chen,

Xiao,

Tian

et al. 2024

Int J Applied Ceramic Tech

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Ytterbium silicate (Yb2Si2O7) and lanthanum zirconate (La2Zr2O7) ceramic powders were synthesized by the sol–gel method. A novel tri‐layer La2Zr2O7/Yb2Si2O7/SiC environmental barrier coating was prepared on the surface of C/SiC composites to improve the service temperature of the coating (above the Si melting point, 1683 K). Results show that both Yb2Si2O7 and La2Zr2O7 ceramic powders had extremely high purity and were accompanied by a large number of nanoparticles. The tri‐layer La2Zr2O7/Yb2Si2O7/SiC coating can efficiently prevent the oxidation failure of C/SiC composites in 1773 K air environment for more than 100 h with slight weight loss of 5.71 × 10−3 g·cm−2 and the matching weight loss rate of 5.71 × 10−5 g·cm−2·h−1. No significant chemical reaction was observed between Yb2Si2O7 middle and La2Zr2O7 outer coatings during the oxidation process at 1773 K, indicating that the tri‐layer La2Zr2O7/Yb2Si2O7/SiC coating had better oxidation stability in 1773 K air environment.

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Effect of Ce-doping on the phase composition and aqueous stability of Gd2Hf2O7 ceramic as nuclear waste forms

Cited by 2 publications

References 50 publications

Corrosion behavior of Gd2Hf2O7 ceramic exposed to Calcium-Ferrum-Alumina-Silicate (CFAS) melt at 1673 K

Corrosion behavior of Gd2Hf2O7 ceramic exposed to Calcium-Ferrum-Alumina-Silicate (CFAS) melt at 1673 K

Oxidation protection of tri‐layer La₂Zr₂O₇/Yb₂Si₂O₇/SiC‐coated C_f/SiC composites at high temperature

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Effect of Ce-doping on the phase composition and aqueous stability of Gd2Hf2O7 ceramic as nuclear waste forms

Cited by 2 publications

References 50 publications

Corrosion behavior of Gd2Hf2O7 ceramic exposed to Calcium-Ferrum-Alumina-Silicate (CFAS) melt at 1673 K

Corrosion behavior of Gd2Hf2O7 ceramic exposed to Calcium-Ferrum-Alumina-Silicate (CFAS) melt at 1673 K

Oxidation protection of tri‐layer La2Zr2O7/Yb2Si2O7/SiC‐coated Cf/SiC composites at high temperature

Contact Info

Product

Resources

About

Oxidation protection of tri‐layer La₂Zr₂O₇/Yb₂Si₂O₇/SiC‐coated C_f/SiC composites at high temperature