Equiatomic quaternary (Y1/4Ho1/4Er1/4Yb1/4)2SiO5 silicate: A perspective multifunctional thermal and environmental barrier coating material

By X. Ren, Zhilin Tian, Jie Zhang, Jingyang Wang. Scripta Materialia, 2019

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Abstract Equiatomic quaternary (Y1/4Ho1/4Er1/4Yb1/4)2SiO5 solid solution is investigated as a multifunctional thermal and environmental barrier coating (TEBC) material in this work. Dense and pure materials were prepared by hot pressing method, and the compositional homogeneity at macroscale and atomic scale were confirmed by electron-dispersive spectrometer elemental mapping and high-angle annular dark-field images. The quaternary solid solution displays balanced optimal properties on Young's modulus, thermal conductivity, thermal expansion, and high temperature water vapor resistance. The moderate cocktail effects also provide suggestions on the design of rare earth monosilicate TEBC materials.

Subfields: Ceramics and Composites, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/2babe515caed5f33cf70f3fc56973f2896d34f14

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Citations in the corpus

• Thermal conductivity and hardness of three single-phase high-entropy metal diborides fabricated by borocarbothermal reduction and spark plasma sintering (2020, background): “Since 2015, the field has expanded to include various high-entropy ceramics that have been fabricated in the bulk form, including high-entropy metal diborides [4,5], carbides [6–8], nitrides [9,10], sulfides [11], silicides [12,13], as well as fluorite [14,15], spinel [16,17], rocksalt [18], magneto”