Preparation and sintering behavior of GdYb-YSZ nanostructured thermal barrier coating

Zhaolu Xue; Lei Zhou; Mengchuan Shi; Zhenya Zhang; Eungsun Byon; Shihong Zhang

Journal of Materials Research and Technology (Sep 2023)

Preparation and sintering behavior of GdYb-YSZ nanostructured thermal barrier coating

Zhaolu Xue,
Lei Zhou,
Mengchuan Shi,
Zhenya Zhang,
Eungsun Byon,
Shihong Zhang

Affiliations

Zhaolu Xue: Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Anhui University of Technology, Ministry of Education, Ma'anshan, 243002, PR China
Lei Zhou: Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Anhui University of Technology, Ministry of Education, Ma'anshan, 243002, PR China
Mengchuan Shi: Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Anhui University of Technology, Ministry of Education, Ma'anshan, 243002, PR China
Zhenya Zhang: Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Anhui University of Technology, Ministry of Education, Ma'anshan, 243002, PR China; Department of Extreme Environmental Coatings, Korea Institute of Materials Science, Changwon, Gyeongnam, 51508, Republic of Korea
Eungsun Byon: Department of Extreme Environmental Coatings, Korea Institute of Materials Science, Changwon, Gyeongnam, 51508, Republic of Korea; Corresponding author.
Shihong Zhang: Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Anhui University of Technology, Ministry of Education, Ma'anshan, 243002, PR China; Corresponding author.

Journal volume & issue: Vol. 26
pp. 7237 – 7247

Abstract

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Gd and Yb co-doped YSZ (GdYb-YSZ) is one of the potential ultra-high temperature thermal barrier coatings due to its excellent properties. GdYb-YSZ nanostructured coatings were prepared using atmospheric plasma spraying, and the deposition mechanism, thermal conductivity, and sintering behavior of GdYb-YSZ coatings at 1400 °C were systemically investigated. The results showed that the plasma-sprayed GdYb-YSZ coating with a typical layered structure was composed of a single cubic ZrO2 phase. The GdYb-YSZ nanostructured coating was sintered at 1400 °C, and the defects such as micropores and microcracks gradually healed. After sintering for 100 h, the thermal conductivity of the coating was 1.6 W m−1 K−1 at 800 °C, which was about 65% higher than that of the as-deposited coating. The GdYb-YSZ coating did not undergo phase transformation during sintering. The GdYb-YSZ coating possessed excellent phase stability at 1400 °C.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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