Aluminum surfaces

US5663001A · kind A · utility

Assignee

• Alusuisse Technology & Management Ltd. · CH

Inventors

• Marcus Textor · Schaffhausen, CH
• Roman Fuchs · Schaffhausen, CH
• Volkmar Gillich · Neuhausen, CH
• Erich Simon · Singen, DE

Key dates

• Filing date: Mar 25, 1996
• Grant date: Sep 2, 1997
• Expiry date: Mar 25, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31678
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Articles of aluminum containing at least one unanodized surface or parts of at least one unanodized surface which are suitable for the deposition of layers or layer systems from the gas phase on said unanodized surfaces, the unanodized surfaces being of a refined aluminum with a degree of purity of equal to, or greater than, 98.3% by weight or aluminum alloys of said aluminum with at least one of the elements from the series comprising Si, Mg, Mn, Cu, Zn or Fe, and the surfaces have a peak-to-valley height Ra of equal to, or less than, 1 .mu.m, and the layer or the layer system is a reflective layer, in particular for radiations in the optical range.