Large xenotime ceramic block and process for making same

A ceramic block consisting essentially of substantially homogeneous (Y2O3)x.P2O5, where 0.95 x 1.05, having length LL, a width WW and a height HH, and a volume VV of at least 8×10−3 m3 essentially free of cracks throughout the volume, a density of at least 85% of the theoretical maximal density of Y...

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Bibliographic Details
Main Authors MCINTOSH, JOSEPH JAMES, LANGENSIEPEN, RALPH ALFRED, TIMMONS, TRACEY L
Format Patent
LanguageChinese
English
Published 11.06.2016
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:A ceramic block consisting essentially of substantially homogeneous (Y2O3)x.P2O5, where 0.95 x 1.05, having length LL, a width WW and a height HH, and a volume VV of at least 8×10−3 m3 essentially free of cracks throughout the volume, a density of at least 85% of the theoretical maximal density of Y2O3.P2O5 under standard conditions, and a creep rate at 1250° C. and 6.89 MPa of CR, where CR 8.0×10−6 hour−1, and method for making the same. The method utilizes a dry process where the starting YPO4-based ceramic material is synthesized by reacting anhydrous P2O5 with dry Y2O3 powder.
Bibliography:Application Number: TW20110139182