Fluid handling – With casing – support – protector or static constructional... – Jacketed
Patent
1999-04-26
2000-06-13
Chambers, A. Michael
Fluid handling
With casing, support, protector or static constructional...
Jacketed
137 1, 251368, 25131503, 25131504, 106 1433, F16L 700
Patent
active
060736488
ABSTRACT:
A laminated coating protects a metal substrate in a highly corrosive and highly erosive environment. A coating of a noble metal, such as gold, is bonded to the metal substrate, such as by electroplating or by flame spray. The noble-metal coating protects the metal substrate from the corrosive effects of a process fluid. A ceramic material, such as chromium oxide or titanium dioxide, is bonded to the noble-metal coating. Ceramic materials resist abrasion very well, which protects the underlying noble-metal coating from the erosive/abrasive effects of the process solution, which may contain suspended solids that are highly abrasive. However, the ceramic material is somewhat porous, which allows some seepage of the process fluid. The metal substrate is protected from the corrosive effects of the process fluid by the noble-metal coating.
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Ferree William P.
Watson James L.
Watson John M.
White Robert L.
Chambers A. Michael
McShane Thomas L.
Watson Grinding and Manufacturing Company
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