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Preparation of ZrO2 coated graphite powders

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Abstract

Graphite powders were coated with ZrO2 by the controlled hydrolysis of a zirconium oxychloride aqueous solution. Thehydrolysis process was carried out with temperature control because of the low wettability of ZrO2 to the surface of thegraphite. PVA was added to the solution for the enhancement of Zr ion adsorption. The surface of the graphite particles coatedwith ZrO2 was observed by TEM. There are two types of ZrO2 particles; (a) primary particles a few nm in size and (b) secondary particles with ∼0.1 μm size were obtained. The data of oxidation weight loss and surface potentialshow that the graphite surface was successfully modified by the forced hydrolysis of the zirconium chloride aqueous solution.

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Authors and Affiliations

  1. Divisions of Materials Science & Engineering, College of Engineering, Seoul National University, Seoul, 151-742, South Korea

    S. Sunwoo & H. Kim

  2. Department of Materials Engineering, College of Engineering, Kyonggi University, Suwon-Si, Kyonggi-Do, 442-760, South Korea

    J. H. Kim & K. G. Lee

Authors
  1. S. Sunwoo
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  2. J. H. Kim
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  3. K. G. Lee
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  4. H. Kim
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Sunwoo, S., Kim, J.H., Lee, K.G. et al. Preparation of ZrO2 coated graphite powders. Journal of Materials Science 35, 3677–3680 (2000). https://doi.org/10.1023/A:1004894404376

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