The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 1989
Filed:
Feb. 03, 1988
Walter Zultzke, Maintal, DE;
Andreas Grunewald, Maintal, DE;
Leybold-Aktiengesellschaft, Hanau, DE;
Abstract
In a method for creating a corrosion-resistant coating (27) of high reflectivity on the surface of a workpiece (22), especially a glass reflector insert, in an evacuable coating chamber with a vaporizing system disposed therein, a second coating (24) of aluminum is deposited cold from a vapor onto a first, cold-applied coating (23) forming an adhesion mediator of nickel-chromium oxide, and onto that a third coating (25) of SiO.sub.2 is applied cold, and a fourth coating (26) of TiO.sub.2 or Ta.sub.2 O.sub.5 is applied at a workpiece temperature of at least 250.degree. C., and finally, as a fifth coating (27), a nickel-chromium oxide layer is deposited reactively from a vapor at a workpiece temperature of at least 250.degree. C. The deposit of the first, third, fourth and fifth coatings (23, 25, 26, 27) from a vapor is performed by means of electron beam vaporizers and the vapor depositing of the second coating (24) is performed by means of a resistance vaporizer.