Stock material or miscellaneous articles – Composite – Of metal
Patent
1986-05-09
1989-06-20
Bell, Janyce
Stock material or miscellaneous articles
Composite
Of metal
427 65, 4271263, 427190, 4273763, 428472, B05D 506, B32B 1504
Patent
active
048408506
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.
REFERENCES:
patent: 2798179 (1957-07-01), Sheldon
patent: 3410716 (1968-11-01), Hiltz
patent: 4132916 (1979-01-01), Hueschen et al.
patent: 4257599 (1981-02-01), McCormick
patent: 4600659 (1986-07-01), Hong et al.
Clark Clarence O.
Hong Jauwhei
Bell Janyce
General Electric Company
Morrison Thomas R.
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