X-ray target having high z particles imbedded in a matrix

Details X-ray target having high z particles imbedded in a matrix X-ray target having high z particles imbedded in a matrix

H - Electricity

01

J

H01J 35/08 (2006.01) H01J 35/10 (2006.01)

Patent

CA 2236792

A rotating anode X-ray target has a matrix structure such as a carbon-carbon matrix and a high Z material imbedded inside this matrix structure. The high Z material may be a refractory metal with atomic number at least 72, its alloy or carbide and may be imbedded in the matrix either as discrete particles or as a non-discrete layer. Such a target can be made by any of a number of known methods such as chemical vapor deposition and chemical vapor infiltration. Without a TZM layer or a braze required for holding together an X-ray- producing surface layer and a carbon heat storage material, the target can be made lighter and can be operated at higher temperatures.

L'invention porte sur une cible génératrice de rayons X comportant une matrice par exemple du type carbone-carbone et un matériau à Z élevé noyé dans la matrice. Ledit matériau peut être un métal réfractaire d'un nombre atomique d'au moins 72, l'un de ses alliage ou carbure et il peut être noyé dans la matrice soit sous forme de particules séparées, soit sous forme de couche continue. Ladite cible peut être obtenue par l'un des procédés connus, telles que le dépôt ou l'infiltration de vapeurs chimiques. L'absence de couche TZM ou de brasure pour maintenir ensemble la surface génératrice de rayons X et le matériau carboné de stockage thermique permettent d'alléger la cible et de l'utiliser à des températures plus élevées.

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