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METHOD FOR PRODUCING SINTERED COMPACT AND SINTERED COMPACT
To provide: a method for producing a sintered compact; and a sintered compact.SOLUTION: A raw material mixture comprises oxide particles including respective elements of at least one rare-earth element R1, Ce, Al, and Ga selected from a group consisting of Y, La, Gd, and Tb and may comprise oxide particles including Sc. In the starting composition thereof, a total molar ratio of R1 and Ce is 3; a molar ratio of Ce is a product of variable m, which is 0.001 or greater and 0.017 or less, and 3; a molar ratio of the sum of Al, Ga, and Sc is a variable k of greater than 5.25 and less than 19; a molar ratio of Al is a product of variable p of 0.61 or greater and 0.90 or less, and variable k; and a molar ratio of Ga is a product of variable n, which is 0.10 or greater and 0.39 or less, and variable k. A method for producing a sintered compact includes: preparing the raw material mixture; forming the raw material mixture to obtain a molded body; and burning the molded body to obtain a sintered compact containing a rare earth aluminate crystal phase and an aluminum oxide phase in the range of 2.7 vol.% or more and 57.0 vol.% or less.SELECTED DRAWING: Figure 5
【課題】焼結体の製造方法及び焼結体を提供する。【解決手段】Ｙ、Ｌａ、Ｇｄ及びＴｂからなる群から選択される少なくとも一種の希土類元素Ｒ１、Ｃｅ、Ａｌ、Ｇａの各元素を含む各酸化物粒子を含み、Ｓｃを含む酸化物粒子が含まれてもよく、仕込み組成において、Ｒ１とＣｅの合計のモル比が３であり、Ｃｅのモル比が０．００１以上０．０１７以下の変数ｍと３の積であり、Ａｌ、Ｇａ及びＳｃの合計のモル比が５．２５より大きく１９未満の変数ｋであり、Ａｌのモル比が０．６１以上０．９０以下の変数ｐと変数ｋの積であり、Ｇａのモル比が０．１０以上０．３９以下の変数ｎと変数ｋの積である原料混合物を準備することと、原料混合物を成形して成形体を得ることと、成形体を焼成して、希土類アルミン酸塩結晶相と２．７体積％以上５７．０体積％以下の範囲内の酸化アルミニウム相を含む焼結体を得ること、を含む製造方法である。【選択図】図５
METHOD FOR PRODUCING SINTERED COMPACT AND SINTERED COMPACT
To provide: a method for producing a sintered compact; and a sintered compact.SOLUTION: A raw material mixture comprises oxide particles including respective elements of at least one rare-earth element R1, Ce, Al, and Ga selected from a group consisting of Y, La, Gd, and Tb and may comprise oxide particles including Sc. In the starting composition thereof, a total molar ratio of R1 and Ce is 3; a molar ratio of Ce is a product of variable m, which is 0.001 or greater and 0.017 or less, and 3; a molar ratio of the sum of Al, Ga, and Sc is a variable k of greater than 5.25 and less than 19; a molar ratio of Al is a product of variable p of 0.61 or greater and 0.90 or less, and variable k; and a molar ratio of Ga is a product of variable n, which is 0.10 or greater and 0.39 or less, and variable k. A method for producing a sintered compact includes: preparing the raw material mixture; forming the raw material mixture to obtain a molded body; and burning the molded body to obtain a sintered compact containing a rare earth aluminate crystal phase and an aluminum oxide phase in the range of 2.7 vol.% or more and 57.0 vol.% or less.SELECTED DRAWING: Figure 5
【課題】焼結体の製造方法及び焼結体を提供する。【解決手段】Ｙ、Ｌａ、Ｇｄ及びＴｂからなる群から選択される少なくとも一種の希土類元素Ｒ１、Ｃｅ、Ａｌ、Ｇａの各元素を含む各酸化物粒子を含み、Ｓｃを含む酸化物粒子が含まれてもよく、仕込み組成において、Ｒ１とＣｅの合計のモル比が３であり、Ｃｅのモル比が０．００１以上０．０１７以下の変数ｍと３の積であり、Ａｌ、Ｇａ及びＳｃの合計のモル比が５．２５より大きく１９未満の変数ｋであり、Ａｌのモル比が０．６１以上０．９０以下の変数ｐと変数ｋの積であり、Ｇａのモル比が０．１０以上０．３９以下の変数ｎと変数ｋの積である原料混合物を準備することと、原料混合物を成形して成形体を得ることと、成形体を焼成して、希土類アルミン酸塩結晶相と２．７体積％以上５７．０体積％以下の範囲内の酸化アルミニウム相を含む焼結体を得ること、を含む製造方法である。【選択図】図５
METHOD FOR PRODUCING SINTERED COMPACT AND SINTERED COMPACT
焼結体の製造方法及び焼結体
YAMAMOTO RYO (author) / TAKETOMI SHOZO (author)
2024-09-09
Patent
Electronic Resource
Japanese
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