B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
103/120, 117/230
B05D 3/12 (2006.01) B05D 7/14 (2006.01) B22F 3/12 (2006.01) C23C 4/18 (2006.01) F04D 29/08 (2006.01)
Patent
CA 2007687
ABSTRACT OF THE DISCLOSURE An annular chromium carbide coating on an annular sealing surface of a stainless steel sealing assembly component for use in a nuclear reactor coolant pump, is treated by encasing at least the chromium carbide coating on the stainless steel sealing surface by applying a metallic cover thereover, evacuating the atmosphere between the cover and the coating on the sealing surface, hot isostatic pressing the stainless steel sealing assembly component and the chromium carbide coating thereon encased by the cover, cooling the sealing assembly component and the coating thereon encased by the cover, and after cooling thereof removing the cover from the coating. The result is a chromium carbide coating on the sealing component substrate densified substantially to it full theoretical density (greater than 99%) and metallurgically bonded by the hot isostatic pressing to the substrate exterior surface.
Boes David J.
Eiffler Elmer E.
Iyer Natraj C.
Male Alan T.
Bereskin & Parr
Boes David J.
Eiffler Elmer E.
Iyer Natraj C.
Male Alan T.
LandOfFree
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