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Corrosion Behavior of a Sputtered K38G Nanocrystalline Coating with a Solid NaCl Deposit in Wet Oxygen at 600 to 700°C

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Abstract

A nanocrystalline coating of K38G alloy was obtained by means of magnetron sputtering. The corrosion behavior of cast K38G alloy and its sputtered nanocrystalline coating with a solid NaCl deposit in dry air or wet oxygen at 600 and 700°C have been studied and compared. The results indicated that the mass gain of the coating is higher than that of the cast alloy at 600 and 700°C. Therefore, nanocrystallization reduced the corrosion resistance at these temperatures. Furthermore, the mass gains of the coating and the cast alloy with a NaCl deposit in wet oxygen were less than that with a NaCl deposit in dry air. The relevant corrosion mechanisms are discussed.

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Authors and Affiliations

  1. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, The Chinese Academy of Sciences, Wencui Road 62, Shenyang, 110016, China

    Fuhui Wang, Shujiang Geng & Shenglong Zhu

Authors
  1. Fuhui Wang
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  2. Shujiang Geng
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  3. Shenglong Zhu
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Wang, F., Geng, S. & Zhu, S. Corrosion Behavior of a Sputtered K38G Nanocrystalline Coating with a Solid NaCl Deposit in Wet Oxygen at 600 to 700°C. Oxidation of Metals 58, 185–195 (2002). https://doi.org/10.1023/A:1016072726338

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