Method of forming yttria-gadolinia ceramic scintillator using hy

Details Method of forming yttria-gadolinia ceramic scintillator using hy Method of forming yttria-gadolinia ceramic scintillator using hy

1991-02-26

1992-05-26

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 12, 2523014R, C04B 3550

Patent

active

051165597

ABSTRACT:
A simplified method of forming polycrystalline translucent-to-transparent yttria-gadolinia composition scintillators comprises forming an aqueous suspension of hydroxide coprecipitates of the yttria-gadolinia composition, and converting the hydroxides to oxalates. The oxalates are neutralized by washing, dried, and granulated to form a finely dispersed oxalate powder. The oxalate powder is calcined, cold pressed to form a compact, and sintered in a reducing atmosphere or vacuum to form the polycrystalline translucent-to-transparent yttria-gadolinia composition scintillator.

REFERENCES:
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patent: 4747973 (1988-05-01), Cusano et al.
patent: 4755492 (1988-07-01), Greskovich
patent: 5021376 (1991-06-01), Nienburg

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