In this work, MoSi 2 , MoSi 2 -20 vol.% ZrO 2 , MoSi 2 -40 vol.% ZrO 2 (denoted, respectively, as MZ0, MZ2, and MZ4) coatings were fabricated by vacuum plasma spraying technology. The oxidation behavior of the coatings was examined at 500, 1200, and 1500°C, respectively. Some basic properties of the coatings, including microhardness, porosity, and surface roughness were characterized. The tests at 500°C showed that the pest oxidation phenomenon of MoSi 2 coatings was restrained by the addition of ZrO 2 . The MZ2 coating exhibited excellent oxidation-resistant behavior both at 1200 and 1500°C. However, the MZ4 coating presented the impaired oxidation-resistant behavior at 1500°C, though the comparable oxidation property at 1200°C was still obtained.
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