Patent · US Expired

Component made of an aluminium silicon cast alloy

US6040059A · kind A · utility

2Cited by

8References

5Claims

0Family size

Assignee

LuK GmbH & Co. · DE

Inventors

Stefan Birkner · Jessenitz Siedlung, DE
Ernst Strian · Gräfenberg, DE
Markus Kreibiehl · Weisendorf, DE

Key dates

Filing date	Nov 9, 1998
Grant date	Mar 21, 2000
Priority date	—
Expiry date	Nov 9, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D11/04
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A component (17) made of an aluminum silicon cast alloy whose surface is at least partly subjected to an anodic treatment to produce an oxide layer, which component comprises, prior to the anodic treatment, a surface-proximate deformation zone (4) configured as a homogeneous zone in which the silicon is uniformly distributed in the .alpha.-mixed crystal (1) and due to this homogeneous mixing of aluminum and silicon, the differing electric conductivities of the original structural constituents (.alpha.-mixed crystal, eutectic) are replaced by a uniform electric conductivity so that uniform oxide layers can grow during the anodizing process.

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