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Spark plasma sintering of ceramic materials based on zirconates of rare-earth elements
https://doi.org/10.17073/1683-4518-2022-12-35-40
Abstract
Powders of rare-earth zirconates, La2Zr2O7 and ZrO2‒8Y2O3 were synthesized by reverse chemical precipitation to obtain ceramic materials on their basis by spark plasma sintering. The formation of the phase composition of ceramics during consolidation by spark plasma sintering has been studied. The thermal conductivity of ceramics based on REE zirconates at 400 °C is 1,79 W/(m·K), which is less than that of La2Zr2O7 ― 2,06 W/(m·K) and ZrO2‒8Y2O3 ― 2,4 W/(m·K). It is shown that the use of REE oxide concentrate is promising for obtaining a ceramic layer of heat-shielding coatings with thermal stability at temperatures above 1200 °C.
About the Authors
S. A. OgleznevaRussian Federation
S. E. Porozova
Russian Federation
M. N. Kachenyuk
Russian Federation
V. B. Kul’met’eva
Russian Federation
A. A. Smetkin
Russian Federation
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Supplementary files
For citation: Oglezneva S.A., Porozova S.E., Kachenyuk M.N., Kul’met’eva V.B., Smetkin A.A. Spark plasma sintering of ceramic materials based on zirconates of rare-earth elements. NOVYE OGNEUPORY (NEW REFRACTORIES). 2022;1(12):35-40. https://doi.org/10.17073/1683-4518-2022-12-35-40
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