Abstract：The nanometer ZrO2 ceramic coating was prepared by subsonic speed flame spraying. The influences of nanometer ZrO2 on microstructure and high-temperature oxidation resistance of the ceramic coating were studied. The results show that, when adding proper quantity of nanometer ZrO2, the microstructure of spraying coating can be fined and high-temperature oxidation resistance of coating enhances. When the ceramic coating contains 19% nanometer ZrO2, the high-temperature oxidation resistance of the coating is best.
Key words：subsonic oxygen-acetylene flame spraying; nanometer ZrO2; ZrO2 ceramics; high-temperature oxidation resistance
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