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:
Jun. 20, 1989
Filed:
May. 09, 1986
Clarence O Clark, Brown Deer, WI (US);
Jauwhei Hong, Elk Grove, IL (US);
General Electric Company, , NY (US);
Abstract
The present invention employs a mechanical mixture of titanium dioxide and calcium oxide which is sintered and ground to produce a ceramic powder for application to a target of an X-ray tube. The powder is fused by baking the target at a predetermined baking temperature to produce a coating having an enhanced coefficient of emissivity. The required baking temperature is controllable by varying the proportion of titanium dioxide to calcium oxide. Baking time may be extended without degrading the coating by mechanically mixing zirconium dioxide to the sintered and ground ceramic powder prior to application to the X-ray target in order to enhance outgassing from the target substrate. The resulting coating on the target improves the emissivity thereof and exhibits and improved bond strength over coatings of the prior art.