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InFeZnO4 as Promising Thermal Barrier Coatings

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We report on the thermal properties of InFeZnO4 which belongs to a general family of homologous layered compounds with general formula InFeO3(ZnO) m (m=1, 3, 5 …). InFeZnO4 exhibits low thermal conductivity, which decreases from 2.86 W·(m·K)−1 at room temperature to 1.36 W·(m·K)−1 at 1200°C. InFeZnO4 also shows moderate thermal expansion coefficients, close to ∼11.7 × 10−6 K−1 at 1200°C, which closely match that of usual metallic substrates. Therefore, this material is very promising as thermal barrier coatings.

Document Type: Research Article


Affiliations: School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

Publication date: 2011-06-01

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