TRANSLUCENT RARE EARTH-GALLIUM-GARNET SINTERED COMPACT, ITS PRODUCTION METHOD, AND OPTICAL DEVICE

PROBLEM TO BE SOLVED: To provide a translucent rare earth-gallium-garnet sintered compact exhibiting satisfactory translucency in the range other than peculiar absorbed wavelengths in 600 to 1,500 nm by an industrially practical means, to provide an optical device, and to provide its production meth...

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Hauptverfasser:	NOZAWA TOSHITERU, YANAGIYA TAKAKIMI, YAGI HIDEKI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DEVICES USING STIMULATED EMISSION ELECTRICITY LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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creator	NOZAWA TOSHITERU YANAGIYA TAKAKIMI YAGI HIDEKI
description	PROBLEM TO BE SOLVED: To provide a translucent rare earth-gallium-garnet sintered compact exhibiting satisfactory translucency in the range other than peculiar absorbed wavelengths in 600 to 1,500 nm by an industrially practical means, to provide an optical device, and to provide its production method. SOLUTION: This invention is a translucent rare earth-gallium-garnet sintered compact expressed by general formula of R3Ga5O12(R is at least one kind of rare earth element selected from the group consisting of Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu including Y), and, as a sintering auxiliary, using high purity rare earth oxide powder with a purity of ≥99.9% comprising at least one member of element selected from the group consisting of Ge, Sn, Sr and Ba by 5 to
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SOLUTION: This invention is a translucent rare earth-gallium-garnet sintered compact expressed by general formula of R3Ga5O12(R is at least one kind of rare earth element selected from the group consisting of Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu including Y), and, as a sintering auxiliary, using high purity rare earth oxide powder with a purity of ≥99.9% comprising at least one member of element selected from the group consisting of Ge, Sn, Sr and Ba by 5 to <1,000 wtppm expressed in terms of metal, and a binder, a compact whose compacting density is ≥58% of the theoretical density ratio is compacted, is heat-treated, so as to remove the binder, and is thereafter fired at 1,400 to 1,650°C for ≥0.5 hr in a vacuum or the like. 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SOLUTION: This invention is a translucent rare earth-gallium-garnet sintered compact expressed by general formula of R3Ga5O12(R is at least one kind of rare earth element selected from the group consisting of Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu including Y), and, as a sintering auxiliary, using high purity rare earth oxide powder with a purity of ≥99.9% comprising at least one member of element selected from the group consisting of Ge, Sn, Sr and Ba by 5 to <1,000 wtppm expressed in terms of metal, and a binder, a compact whose compacting density is ≥58% of the theoretical density ratio is compacted, is heat-treated, so as to remove the binder, and is thereafter fired at 1,400 to 1,650°C for ≥0.5 hr in a vacuum or the like. 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SOLUTION: This invention is a translucent rare earth-gallium-garnet sintered compact expressed by general formula of R3Ga5O12(R is at least one kind of rare earth element selected from the group consisting of Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu including Y), and, as a sintering auxiliary, using high purity rare earth oxide powder with a purity of ≥99.9% comprising at least one member of element selected from the group consisting of Ge, Sn, Sr and Ba by 5 to <1,000 wtppm expressed in terms of metal, and a binder, a compact whose compacting density is ≥58% of the theoretical density ratio is compacted, is heat-treated, so as to remove the binder, and is thereafter fired at 1,400 to 1,650°C for ≥0.5 hr in a vacuum or the like. COPYRIGHT: (C)2008,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record>
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subjects	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DEVICES USING STIMULATED EMISSION ELECTRICITY LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
title	TRANSLUCENT RARE EARTH-GALLIUM-GARNET SINTERED COMPACT, ITS PRODUCTION METHOD, AND OPTICAL DEVICE
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