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US 5,417,735 AGranted
Interdiffused chromium/nickel corrosion-resistant coating for fiberglass spinner bores
OwnerDennis L. McGarryinventor
Life of this patent
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Abstract
A corrosion-resistant fiberglass spinner is prepared by applying consecutive, alternating layers of chromium and nickel to the bores of the spinner, and thereafter thermally interdiffusing the chromium and nickel to form a corrosion-resistant coating.
Claims18
A process for preparing a corrosion-resistant fiberglass spinner, comprising:
- providing a spinner, comprising a foraminous wall including a plurality of bores having substantially cylindrical surfaces;
- applying consecutive, alternating layers of chromium and nickel to the surfaces of the bores, at least one of the consecutive, alternative layers containing chromium and at least one of the consecutive, alternate layers containing nickel;
- and
- heating the spinner to a temperature and for a time sufficient to at least partially interdiffuse the chromium and nickel layers.
1 more element
A process for preparing a corrosion-resistant fiberglass spinner, comprising:
- providing a spinner, comprising a foraminous wall including a plurality of bores having substantially cylindrical surfaces;
- applying, by chemical vapor deposition and electroless plating respectively, consecutive, alternating layers of chromium and nickel to the surfaces of the bores, at least one of said consecutive, alternating layers containing chromium having a thickness from about 5 to about 25 microns, at least one of said consecutive, alternating layers containing nickel having a thickness from about 5 to about 25 microns;
- and
- heating the spinner to a temperature of up to about 1,200.degree. C. for a period of up to about 8 hours to at least partially interdiffuse the chromium and nickel layers.
1 more element
A corrosion-resistant fiberglass spinner, comprising:
- a foraminous wall including a plurality of bores having substantially cylindrical surfaces;
- and
- an interdiffused coating of chromium and nickel adhered to the surfaces of the bores.
A corrosion-resistant fiberglass spinner comprising:
- a foraminous wall including a plurality of bores having substantially cylindrical surfaces;
- and
- a partially interdiffused coating of chromium and nickel adhered to the surfaces of the bores, the bulk average concentration of chromium in said interdiffused coating being from about 35 to about 65 percent by weight, the thickness of said interdiffused coating being from about 10 to about 50 microns.
Dependencies are inferred from the claim text.