Patent · US Expired

Oxidation-resistant metal foil, its use and method for its production

US6203632A · kind A · utility

0Cited by

8References

8Claims

0Family size

Assignee

Krupp VDM GmbH · DE

Inventors

Ulrich Heubner · Werdohl, DE
Angelika Kolb-Telieps · Lüdenscheid, DE
Ralf Hojda · Altena, DE

Key dates

Filing date	Jul 1, 1999
Grant date	Mar 20, 2001
Priority date	—
Expiry date	Jul 1, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C38/28
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to iron-chromium aluminum metal foil which is resistant to high-temperature oxidation. Said metal foil is produced by hot-dip aluminizing an iron-chromium support band with an aluminum-silicon alloy. The foil has the following composition in weight percent: 18-25% Cr. 4-10% Al, 0.03-0.08% Y, max. 0.01% Ti, 0.01-0.05% Zr, 0.01-0.05% Hf, 0.5-1.5% Si. It also contains residual iron and impurities resulting from the method of production. The total aluminum content of the coated metal foil is at least 7% near the surface and not less than 3% further inside.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.