Composite body made of graphite and high-melting metal

Details Composite body made of graphite and high-melting metal Composite body made of graphite and high-melting metal

1990-05-25

1992-06-16

Dean, R.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428635, 428670, 313355, 378144, H01J 3510

Patent

active

051224224

ABSTRACT:
A composite body for rotary anodes of X-ray tubes is made from graphite, a carbide-forming, high-melting metal component and a multi-layered intermediate layer. The first layer of the intermediate layer closest to the graphite is made up of a metal or an alloy thereof which does not form a carbide. Applied over the first layer are at least two double layers. Each double layer has one individual layer of at least one carbide-forming metal or at least one carbide thereof, and a second individual layer of a metal or an alloy thereof which does not form a carbide. Preferred carbide-forming metals are tungsten, tantalum, hafnium and niobium. Preferred metals which do not form carbides are rhenium and platinum. In a preferred embodiment, the composite body is a rotary anode for X-ray tubes, with a basic body made of graphite and a burning track made of tungsten or a tungsten-rhenium alloy applied directly to the intermediate layer.

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Gonser, B. W., Rhenium, Paper presented at the Symposium on Rhenium, May 3-4, 1960, Chicago, Ill.
CRC Handbook of Chemistry and Physics, 60th ed., 1980, pp. B 116-117.

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