Article for use under high vacuum at high temperature

Details Article for use under high vacuum at high temperature Article for use under high vacuum at high temperature

1995-11-15

1997-03-04

Turner, Archene

Stock material or miscellaneous articles

Composite

Of metal

428336, 428457, 428698, 428704, 501 96, 501 98, G04B 3558

Patent

active

056077750

ABSTRACT:
Proposed is an article of pyrolytic boron nitride such as crucibles for use at a high temperature under an extremely high vacuum as in the molecular beam epitaxy. The article can be used in the high temperature, high vacuum process without the conventional elaborate and time-consuming degassing bake-out treatment because the article is wrapped in a wrapping film having a specified low moisture permeability immediately after a preliminary degassing treatment under specified conditions before the article is wrapped under a low-moisture atmosphere in a glove box.

REFERENCES:
patent: 4634640 (1987-01-01), Hunold et al.
patent: 4960734 (1990-10-01), Kanai et al.
patent: 4977103 (1990-12-01), Chand
patent: 5332629 (1994-07-01), Sumiya et al.

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