Composite thermocouple protection tubes

Details Composite thermocouple protection tubes Composite thermocouple protection tubes

1996-08-07

1997-08-05

Beck, Shrive

Coating processes

Coating by vapor, gas, or smoke

Carbon or carbide coating

427255, 427282, 136230, 136232, 136233, 118504, 118505, C23C 1632

Patent

active

056540345

ABSTRACT:
A semiconductor protection tube is a ceramic tube with a layer of silicon carbide covering at least a portion of the tube adjacent an open front end of the tube and extending forward of the open end to form a hollow, closed-end tip. The protection tube is formed by providing the ceramic tube, inserting a mandrel through the tube to extend forward of the front end, and depositing silicon carbide by chemical vapor deposition over at least a front portion of the ceramic tube and over the forward-extending portion of the mandrel. Subsequent removal of the mandrel completes the production of the protection tube.

REFERENCES:
patent: 3185131 (1965-05-01), Manning
patent: 3343589 (1967-09-01), Holzl
patent: 3950479 (1976-04-01), Reuschel et al.
patent: 5315092 (1994-05-01), Takahashi et al.
patent: 5382453 (1995-01-01), Mason

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