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US 4,901,338 AGranted
Rotary anode for X-ray tubes and method of manufacture
AssigneeSchwarzkopf Development Corporation
InventorsPeter Rodhammer, Karlheinz Kailer
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Abstract
Rotary graphite anode for use in X-ray tubes comprising a basic body consisting of graphite and a high melting alloy and having a tungsten alloy focal track. The basic body is secured to a graphite substrate. The graphite substrate is coated by a layer of carbon formed by decomposition of hydrocarbon gases in an activated d.c. voltage discharge.
Claims23
A rotary graphite anode for use in X-ray tubes comprising:
- a basic body having a focal track coating of high melting metals on one of its surfaces and secured on another of its surfaces to a graphite substrate;
- said graphite substrate coated with a layer of carbon formed by decomposition of hydrocarbon gases in an activated d.c. voltage discharge.
A method of manufacturing a rotary graphite anode for use in X-ray tubes comprising:
- (a) soldering a graphite substrate to a surface of a basic body comprised of a high melting alloy;
- (b) coating said graphite substrate with a layer of carbon formed both by decomposition of hydrocarbon gases at temperatures ranging from about 200.degree. C. to about 650.degree. C. and pressures ranging from about 0.5 Pa to about 2.0 Pa and evaporation of graphite by means of an electron beam gun, and
- (c) coating said basic body with a tungsten alloy coating.
A rotary anode comprised of:
- a graphite substrate;
- a focal track coating secured to a first surface of said graphite substrate;
- and
- said graphite substrate coated on a second surface thereof with a layer of carbon formed by decomposition of hydrocarbon gases in an activated d.c. voltage discharge.
1 more element
A method of manufacturing a rotary anode for use in x-ray tubes comprising:
- (a) applying a focal track coating comprised of a refractory metal or refractory metal alloy onto a graphite substrate;
- and
- (b) coating said graphite substrate with a layer of carbon formed both by decomposition of hydrocarbon gases at temperatures ranging from about 200.degree. C. to about 650.degree. C. and pressures ranging from about 0.5 Pa to about 2.0 Pa and evaporation of graphite by means of an electron beam gun.
Dependencies are inferred from the claim text.