Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1997-03-17
1999-04-06
Gorgos, Kathryn L.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
428553, 428565, 123668, 123670, 208 48R, 4271263, 4272481, 427255, 585550, F02B 7704, C23C 1640
Patent
active
058915842
ABSTRACT:
Articles for hot hydrocarbon fluid wherein the surface for contacting the fluid is a diffusion barrier material or a catalytic material coated on a metal substrate. The material is either catalytically-inactive tantalum oxide which inhibits the formation of coke in the fluid or catalytically-active zirconium oxide which promotes the formation of a loosely adherent coke in the fluid while inhibiting the formation of gum in the fluid. The coating materials, i.e., the diffusion barrier coating material and the catalytic coating material, are deposited by chemical vapor deposition (CVD), e.g., by effusive chemical vapor deposition of an organometallic compound on the surface without the use of carrier gas, without pre-oxidation of the surface and without thermal decomposition of the diffusion barrier material or the catalytic coating material. The articles having the coated surfaces find utility in components subjected to high temperatures wherein the components are in contact with hydrocarbon fluids without additives, without special attention to quality control and without the need for special processing.
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Carroll Chrisman D.
General Electric Company
Gorgos Kathryn L.
Hess Andrew C.
Narciso David L.
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