Coating processes – With post-treatment of coating or coating material – Solid treating member or material contacts coating
Patent
1990-04-20
1991-10-15
Stoll, Robert L.
Coating processes
With post-treatment of coating or coating material
Solid treating member or material contacts coating
376203, 419 49, 419 9, 419 14, 419 19, 427370, 4273763, 4273837, 427404, 4274192, 4274193, 4274197, 427405, B05D 312
Patent
active
050573403
ABSTRACT:
A ceramic-based coating is provided on a sealing surface of a sealing assembly component by processing and applying a powder mixture of ceramic particles and metal binder, encasing the coating of powder on the sealing surface by applying a metallic cover thereover, evacuating the atmosphere between the cover and coating, hot isostatic pressing the component and coating, cooling the component and coating, and after cooling thereof removing the cover from the coating. The powder processing includes mixing the ceramic particles and metal binder to produce a mixture, pretreating the mixture by heating it to the melting point of the metal binder which is less than the melting point of the ceramic particles to produce a mass of ceramic particles coated with molten metal binder and having a reduced gas content, cooling the mass of ceramic particles coated with molten metal binder to produce a solid mass thereof, and pulverizing the solid mass of metal binder coated-ceramic particles to granulate the powder mixture of ceramic particles to the desired size and still at least partially coated with metal binder. The resultant coating is densified substantially to its full theoretical density, metallurgically bonded to the substrate exterior surface, and has ceramic particles which are interparticle bonded together due to the processing step.
REFERENCES:
patent: 3611546 (1971-10-01), Haller
patent: 4107392 (1978-08-01), Aoki et al.
patent: 4121770 (1978-10-01), Straaup et al.
patent: 4150998 (1979-04-01), Morelock
patent: 4280841 (1981-07-01), Ito et al.
patent: 4281931 (1983-05-01), Hunold et al.
patent: 4614724 (1986-09-01), Knock et al.
patent: 4748826 (1988-06-01), Laumen
patent: 4909841 (1990-03-01), Iyer et al.
Gettliffe Eleanor
Iyer Natraj C.
Bhat Nina
Stoll Robert L.
Westinghouse Electric Corp.
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