| 摘要 |
A bonded structure of a metal and a ceramic, in which a layer of the ceramic is coated on the surface of the metal as a substrate through an interlayer, or in which a layer of the metal is coated on the surface of the ceramic as a substrate through an interlayer, wherein said interlayer consists of (a) a composition composed of 0.2 to 4 mole % of yttria and a balanced mole % of the main component of the metal to bonded in which a powder of said metal and a powder of yttria are intimately mixed and then given a mechanical impact whereby the two powders are bonded to each other to form a nearly spherical composite powder or (b) a composite composed of 0.2 to 4 mole % of yttria, up to 2 mole % of the main component of the ceramic to be bonded and a balanced mole % of the main component of the metal to be bonded, in which a powder of said metal, a powder of yttria and a powder of said ceramic are intimately mixed and then given a mechanical impact, whereby these powders are bonded to one another to form a nearly spherical composite powder, said interlayer is formed by plasma-spraying the components of said composition onto the ceramic or metal to be bonded, or by coating the components of said composition on the ceramic or metal to be bonded and then heat-treating the resulting structure at a high temperature in vacuum or in an inert gas.
|
