Heat radiating coating and method of manufacture thereof

Details Heat radiating coating and method of manufacture thereof Heat radiating coating and method of manufacture thereof

1975-05-07

1976-09-21

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Electrode and shield structures

With lead wire or connector

313 40, 313 41, 313309, 313351, 427 65, 427160, 313 55, H01J 3508

Patent

active

039821480

ABSTRACT:
A heat radiating coating of rhenium for a refractory core which may be used for a rotating X-ray anode, power tube or the like. The coating is characterized by a multiplicity of needle-like radiation-reflecting elements disposed adjacent to each other. The needles have such steep angles that incoming radiation is substantially absorbed thereby by repeated reflection. Since the coating has a high radiation absorption coefficient it has a corresponding high emissivity on the order of 0.9 at elevated temperatures. A process is disclosed for depositing such a heat radiating coating of rhenium by chemical vapor deposition.

REFERENCES:
patent: 2071696 (1937-02-01), Jonas
patent: 2607016 (1952-08-01), Kennebeck
patent: 3174043 (1965-03-01), Dyke et al.
patent: 3453478 (1969-07-01), Shoulders et al.
patent: 3819971 (1974-06-01), Kaplan et al.
patent: 3821581 (1974-06-01), Holland et al.
patent: 3869634 (1975-03-01), Konieczynski et al.

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