Journal
CORROSION SCIENCE
Volume 105, Issue -, Pages 1-7Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2015.12.003
Keywords
Intermetallics; Metal coatings; Kinetic parameters; Oxidation
Funding
- National Natural Science Foundation of China [51171010, 51431003, U1435201]
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Mo-Si-B was coated on Nb-Si based alloys using D-gun spraying of Mo followed by Si and B co-deposition. Microstructure evolution and the oxidation behavior of the coating were studied. The coating consists of a MoSi2 layer with dispersed MoB particles during the initial co-deposition. A continuous MoB layer forms beneath the MoSi2 layer after a prolonging time. The growth rate of the coating follows a parabolic law. The mass gain of Mo-Si-B coating is only 0.92 mg/cm(2) after oxidation at 1250 degrees C for 100 h. The good oxidation resistance results from a protective borosilicate scale formed on the coating. (C) 2015 Elsevier Ltd. All rights reserved.
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