Method of minimizing environmental effect in aluminides
US6673164B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Mar 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49083
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of cold fabricating an intermetallic alloy composition, comprising steps of coating an article of an intermetallic alloy composition with a viscous medium which provides a moisture resistant barrier on the surface of the article, fabricating the coated article into a desired shape, and optionally removing the coating from the shaped article. The coating step can be carried out by applying oil to the surface of the article or immersing the article in oil. The intermetallic article can be an iron aluminide and the fabrication step can include stamping, bending, drawing, forming, cutting, shearing or punching. During the fabrication step a surface oxide film is cracked and metal surfaces exposed by the cracked oxide film are protected from exposure to moisture in the air by the viscous medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.