| 摘要 |
<p>Method of thermal spray coating a substrate by projecting heat-softened particles onto the substrate including the steps of contacting particles to be projected and coated onto the substrate with a body of hot gases, heating the particles in the hot gases to a temperature near, at or above their melting point and impinging the heated particles against the substrate to provide a coating having the desired thickness wherein the particles are first heated to a relatively higher temperature and impinged onto the substrate to provide a first layer having a thickness that is a fraction of the desired thickness and thereafter heating coated particles to a lower temperature in the hot gases and impinging them on the first layer to provide a second layer having a thickness which together with the thickness of the first layer equals the desired thickness; and the resulting coated substrate.</p> |
