Inhibition of fretting corrosion of metals
AssigneeUnited Kingdom Atomic Energy Authority
InventorGeoffrey Dearnaley
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Abstract
A process for treating a titanium containing artefact to inhibit fretting corrosion, in which an active species having a higher heat of formation of its oxide than titanium is deposited on the artefact in vacuo, and the artefact is then heated sufficiently to cause the active species to migrate into the artefact to provide a surface region thereof containing the active species. Preferably the active species is deposited by an ion bombardment technique.
Claims8
A process for treating a bearing surface containing titanium to inhibit fretting corrosion and improve the fretting fatigue resistance thereof, comprising the operations of depositing under reduced pressure on the said bearing surface an active species having a higher heat of formation of its oxide than titanium, and heating the bearing surface to a temperature and for a period sufficient to cause the deposited active species to migrate into the bearing surface to provide a surface region thereof containing the active species.
Dependencies are inferred from the claim text.