High vapor pressure metal for X-ray anode braze joint

Details High vapor pressure metal for X-ray anode braze joint High vapor pressure metal for X-ray anode braze joint

1992-02-25

1993-09-21

Porta, David P.

X-ray or gamma ray systems or devices

Source

Target

378127, 228239, 228124, 22826312, H01J 3510

Patent

active

052475638

ABSTRACT:
A method of bonding a metallic target layer and a graphite disk to provide a composite rotating X-ray tube target wherein a high vapor pressure metal is placed between the target layer and the graphite disk and the vapor pressure of the joint is controlled. The vapor pressure is controlled by limiting the thickness of the joint and thereby causing the metallic character of the braze joint in this region to be altered. In a preferred manner, this is effected by interfitting projecting and recessed portions in the graphite disk and metallic target layer. The preferred high vapor pressure metal is titanium. A composite X-ray tube target is produced having a high remelt temperature and thus capable of being employed in X-ray tubes having more aggressive protocols.

REFERENCES:
patent: 4736400 (1988-04-01), Koller et al.
patent: 4847883 (1989-07-01), Fourre
patent: 4958364 (1990-09-01), Guerin et al.
patent: 5008918 (1991-04-01), Lee et al.
patent: 5178316 (1993-01-01), Block

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