Title:
METHOD FOR INHIBITING CORROSION OF ALLOYS EMPLOYING ELECTROCHEMISTRY
Document Type and Number:
WIPO Patent Application WO2002029134
Kind Code:
A3
Abstract:
A method for inhibiting corrosion, e.g., pitting corrosion, of alloys is provided. Particularly, the method comprises contacting at least a portion of a surface of the alloy with an aqueous solution comprising a salt of one or more rare earth elements selected from the group consisting of yttrium, gadolinium, cerium, europium, terbium, samarium, neodymium, praseodymium, lanthanum, holmium, ytterbium, dysprosium and erbium; and establishing a voltage differential between an anode comprising the alloy and a cathode in the solution at an effective level and for a sufficient period of time wherein a rare earth element oxide-containing coating is formed on the surface of the alloy to inhibit corrosion thereof.
Inventors:
SRINIVASAN REGASWAMY (US)
SAFFARIAN HASSAN M (US)
FOGEL STUART A (US)
SAFFARIAN HASSAN M (US)
FOGEL STUART A (US)
Application Number:
PCT/US2001/042427
Publication Date:
November 06, 2003
Filing Date:
October 02, 2001
Export Citation:
Assignee:
UNIV JOHNS HOPKINS (US)
SRINIVASAN REGASWAMY (US)
SAFFARIAN HASSAN M (US)
FOGEL STUART A (US)
SRINIVASAN REGASWAMY (US)
SAFFARIAN HASSAN M (US)
FOGEL STUART A (US)
International Classes:
C25D9/06; C25D9/10; C25D11/02; (IPC1-7): C25D9/06; C25D11/02
Foreign References:
| GB1439933A | 1976-06-16 |
Other References:
LU, Y.C.: "THE IMPROVEMENT OF THE LOCALIZED CORROSION RESISTANCE OF STAILESS STEEL BY CERIUM", CORROSION SCIENCE, vol. 34, no. 11, 1993, pages 1773 - 1785, XP008020971
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