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:
Mar. 30, 1993
Filed:
Nov. 21, 1991
Wolfgang Hohenauer, Kufstein, AT;
Schwarzkopf Technologies Corporation, New York, NY (US);
Abstract
The present invention relates to an oxide coating layer for improving the thermal emissivity of metallic X-ray tube anodes as well as improving the layer properties and effects displayed by the oxide coating. The oxide coating layer includes 1-20% by weight, and preferably, 4-7% by weight, of aluminum oxide. The layer additionally includes small proportions of other compounds and contains the oxides of the metals Ti and Zr and is applied to the x-ray anode by standard deposition processes. It is essential that the titanium dioxide content is less than 20% by weight of the oxide coating layer and the zirconium oxide content is greater than 60% by weight of the oxide coating layer. The coating layer may also include a stabilizing component, such as CaO. As a result, the deposition of such oxides or oxide mixtures is substantially better than hitherto known, and the anodes thus produced can be further processed to produce useable oxide layers without adverse effect to the important properties of layer adhesion and thermal emission coefficient.