| 摘要 |
A method of applying a ceramic coating to a metallic workpiece is proposed in which the workpiece is heated in a range of 500 DEG C. to 950 DEG C. and the coating directly plasma sprayed thereon in an atmosphere of air before the workpiece has formed any considerable oxide skin thereon. In this way the use of the conventional bond coat is avoided, while the amount of tensile stress on the ceramic at working temperature is reduced by the pre-stressing effect thus induced.
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