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MANUFACTURING METHOD OF POROUS ZIRCONIA SINTERED BODY
PROBLEM TO BE SOLVED: To provide a method for controlling pore diameter at high accuracy by optimizing a raw material composition or a sintering condition for pore diameter control or the like, and uniformly distributing a pore forming agent in a ceramic material.SOLUTION: There is provided a method having a particle forming process for forming a particle by preparing a second raw material liquid consisting of zirconium-containing colloid by adding carboxylic acid to a first raw material liquid containing aqueous zirconia as an impurity, heating them and thermally decomposing a part of zirconia hydroxide; a molding process for obtaining a molded body containing a zirconia material containing a spherical shaped porous zirconia particle; and a process for obtaining a porous zirconia sintered body by burning the molded body and sintering zirconia. There is provided a method for manufacturing a porous zirconia sintered body for obtaining a porous sintered body, in which its average pore diameter is 0.1 to 0.5 μm, 80% or more of all the pore exists in a range of 0.1 μm including the average pore diameter, and preferably specific surface area is 0.8 m/g or more at relative density of 50% or more.SELECTED DRAWING: Figure 1
【課題】原料組成や焼成条件を孔径制御等に最適化し、また、造孔剤をセラミックス材料に対して均一に分布させて、高精度に孔径制御する方法の提供。【解決手段】不溶物として水性ジルコニアを含む第一原料液にカルボン酸を加えて、ジルコニウ含有コロイドとからなる第２原料液を調整し、加熱して、水酸化ジルコニアの１部を熱分解して粒子化する粒子化工程と、球状の多孔質ジルコニア粒子を含むジルコニア材料を含む成形体を得る成形工程と、成形体を焼成してジルコニアを焼結させて多孔質ジルコニア焼結体を得る工程と、を備える方法。平均細孔径が０．１〜０．５μｍであって、前記平均細孔径を含む０．１μｍの範囲に全細孔の８０％以上を含み、好ましくは、相対密度が５０％以上で比表面積が０．８ｍ２／ｇ以上である、多孔質焼結体を得る多孔質ジルコニア燃結体を製造する方法。【選択図】図１
MANUFACTURING METHOD OF POROUS ZIRCONIA SINTERED BODY
PROBLEM TO BE SOLVED: To provide a method for controlling pore diameter at high accuracy by optimizing a raw material composition or a sintering condition for pore diameter control or the like, and uniformly distributing a pore forming agent in a ceramic material.SOLUTION: There is provided a method having a particle forming process for forming a particle by preparing a second raw material liquid consisting of zirconium-containing colloid by adding carboxylic acid to a first raw material liquid containing aqueous zirconia as an impurity, heating them and thermally decomposing a part of zirconia hydroxide; a molding process for obtaining a molded body containing a zirconia material containing a spherical shaped porous zirconia particle; and a process for obtaining a porous zirconia sintered body by burning the molded body and sintering zirconia. There is provided a method for manufacturing a porous zirconia sintered body for obtaining a porous sintered body, in which its average pore diameter is 0.1 to 0.5 μm, 80% or more of all the pore exists in a range of 0.1 μm including the average pore diameter, and preferably specific surface area is 0.8 m/g or more at relative density of 50% or more.SELECTED DRAWING: Figure 1
【課題】原料組成や焼成条件を孔径制御等に最適化し、また、造孔剤をセラミックス材料に対して均一に分布させて、高精度に孔径制御する方法の提供。【解決手段】不溶物として水性ジルコニアを含む第一原料液にカルボン酸を加えて、ジルコニウ含有コロイドとからなる第２原料液を調整し、加熱して、水酸化ジルコニアの１部を熱分解して粒子化する粒子化工程と、球状の多孔質ジルコニア粒子を含むジルコニア材料を含む成形体を得る成形工程と、成形体を焼成してジルコニアを焼結させて多孔質ジルコニア焼結体を得る工程と、を備える方法。平均細孔径が０．１〜０．５μｍであって、前記平均細孔径を含む０．１μｍの範囲に全細孔の８０％以上を含み、好ましくは、相対密度が５０％以上で比表面積が０．８ｍ２／ｇ以上である、多孔質焼結体を得る多孔質ジルコニア燃結体を製造する方法。【選択図】図１
MANUFACTURING METHOD OF POROUS ZIRCONIA SINTERED BODY
多孔質ジルコニア焼結体の製造方法
SUEHIRO SATOSHI (author) / OKAWA HAJIME (author) / KIMURA TEIICHI (author) / TAKAHASHI SEIJI (author)
2018-11-15
Patent
Electronic Resource
Japanese
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