B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/53
B05D 1/10 (2006.01) C23C 4/02 (2006.01) C23C 4/12 (2006.01)
Patent
CA 1298147
- 30 - THERMAL SPRAY COATING HAVING IMPROVED ADHERENCE, LOW RESIDUAL STRESS AND IMPROVED RESISTANCE TO SPALLING AND METHODS FOR PRODUCING SAME ABSTRACT OF THE DISCLOSURE Method of thermal spray coating a substrate by projecting heat-softened particles onto said 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 said 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. The invention also includes the resulting coated substrates. D-15501
569998
Sim & Mcburney
Union Carbide Corporation
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