Method of making an unactivated yttrium tantalate x-ray phosphor

Details Method of making an unactivated yttrium tantalate x-ray phosphor Method of making an unactivated yttrium tantalate x-ray phosphor

1995-06-06

1996-04-02

Bonner, C. Melissa

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

423263, 423593, C09K 1180, C01F 702

Patent

active

055037690

ABSTRACT:
A method of making an unactivated yttrium tantalate x-ray phosphor containing an aluminum additive wherein a high brightness phosphor is obtained without the use of a lithium chloride containing flux. The method includes using a high surface area aluminum oxide as the source of the aluminum additive and a lithium sulfate flux.

REFERENCES:
patent: 4925702 (1990-05-01), Reddy
patent: 5064729 (1991-11-01), Zegarski
patent: 5112524 (1992-05-01), Reddy et al.

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