Wear Resistance of Zirconia Coating Produced by Gas Tunnel Type Plasma Spraying(Physics, Process, Instrument & Measurements)
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The Zirconia Coating produced by the gas tunnel type plasma spraying have high qualities, i.e. high density, high hardness and low porosity. In the previous report, the characteristics of those zirconia coating have been investigated by experiments and those analysis. In this paper, the zirconia coating coatings produced by means of gas tunnel type plasma spraying under various experimental conditions were investigated mainly on the wear resistance of those coatings, and the following results were obtained. The average wear weight of the zirconia coating produced at the spraying distance of L=30mm, when the power input was P=22kW, was very low value of w=0.0035g/hour. This average wear weight of the zirconia coating was increased as the spraying distance was increased. The wear resistance of the zirconia coating was improved as the spraying distance was decreased and also as the power input was increased. As for the size of zirconia spraying powder, the zirconia coating with finer size powder had higher wear resistance. The relation between the characteristic of Vickers hardness and the wear characteristic of those zirconia coating was investigated and it was found that the wear resistance was improved as the Vickers hardness was increased. These zirconia coatings produced by means of gas tunnel type plasma spraying had a high wear resistance as well as high Vickers hardness in comparison with that by the conventional type plasma spraying.
- 大阪大学の論文
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