Microstructure of Nanostructured Zirconia Coating and Its Thermal Shock Resistance

Abstract

Abstract: The nanostructured and conventional zirconia coatings were fabricated by an atmosphere plasma spraying technique. The microstructure of the as-sprayed zirconia
coatings was analyzed. The results show that the nanostructured zirconia coating is a typical lamellar structure composed of columnar grain about
100nm in diameter. In the nanostructured zirconia coating, the pore is fine and of homogeneous distribution, and there exist a large quantity of small
microcracks. The nanostructured zirconia coating possesses better thermal shock resistance than the conventional zirconia coating.

Key words: plasma spraying, nanostructured coating, zirconia, thermal shock behavior

CLC Number:

TG174

LIANG Bo,DING Chuan-Xian. Microstructure of Nanostructured Zirconia Coating and Its Thermal Shock Resistance[J]. Journal of Inorganic Materials.

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Microstructure of Nanostructured Zirconia Coating and Its Thermal Shock Resistance

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