X-ray or gamma ray systems or devices – Source – Target
Patent
1991-11-21
1993-03-30
Church, Craig E.
X-ray or gamma ray systems or devices
Source
Target
378143, H01J 3510
Patent
active
051990598
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.
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patent: 4029828 (1977-06-01), Bildstein et al.
patent: 4516255 (1985-05-01), Petter et al.
patent: 4870672 (1989-09-01), Lindberg
patent: 4953190 (1990-08-01), Kukoleck et al.
Church Craig E.
Schwarzkopf Technologies Corporation
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