A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MOLDED BODY AND MANUFACTURING METHOD OF MOLDED BODY
PROBLEM TO BE SOLVED: To provide a molded body of an alumina powder capable of reducing shrinkage of apparent volume due to sintering and sufficiently increasing strength of a sintered body.SOLUTION: There is provided a molded body having alumina particles and an organic binder, the alumina particle has particle size distribution having a first peak with a peak between 10 to 100 μm and a second peak with a peak between 0.1 to 10 μm. There is provided a molded body that the second peak has at least 2 peaks, one of the peaks has an apex between 1 to 10 μm and another peak has an apex between 0.1 to 1 μm. There is provided a molded body that the first peak preferably has an apex between 10 to 30 μm and in which 80 mass% or more of α-alumina particles with a single crystal having practically no crush surface is contained.SELECTED DRAWING: None
【課題】焼結による見かけ体積の収縮を低減でき、かつ、焼結体の強度を十分高くすることのできる、アルミナ粉末の成形体の提供。【解決手段】アルミナ粒子と、有機結合剤と、を備え、アルミナ粒子は、１０〜１００μｍの間に頂点を持つ第１ピークと、０．１〜１０μｍの間に頂点を持つ第２ピークと、を有する粒度分布を有する成形体。第２ピークは少なくとも２つのピークを有し、一方のピークが１〜１０μｍの間に頂点を有し、他方のピークが０．１〜１μｍの間に頂点を有する、成形体。第一ピークが、好ましくは、１０〜３０μｍの間に頂点を持ち、実質的に破砕面を有さない単結晶のα−アルミナ粒子が８０質量％以上含む、成形体。【選択図】なし
MOLDED BODY AND MANUFACTURING METHOD OF MOLDED BODY
PROBLEM TO BE SOLVED: To provide a molded body of an alumina powder capable of reducing shrinkage of apparent volume due to sintering and sufficiently increasing strength of a sintered body.SOLUTION: There is provided a molded body having alumina particles and an organic binder, the alumina particle has particle size distribution having a first peak with a peak between 10 to 100 μm and a second peak with a peak between 0.1 to 10 μm. There is provided a molded body that the second peak has at least 2 peaks, one of the peaks has an apex between 1 to 10 μm and another peak has an apex between 0.1 to 1 μm. There is provided a molded body that the first peak preferably has an apex between 10 to 30 μm and in which 80 mass% or more of α-alumina particles with a single crystal having practically no crush surface is contained.SELECTED DRAWING: None
【課題】焼結による見かけ体積の収縮を低減でき、かつ、焼結体の強度を十分高くすることのできる、アルミナ粉末の成形体の提供。【解決手段】アルミナ粒子と、有機結合剤と、を備え、アルミナ粒子は、１０〜１００μｍの間に頂点を持つ第１ピークと、０．１〜１０μｍの間に頂点を持つ第２ピークと、を有する粒度分布を有する成形体。第２ピークは少なくとも２つのピークを有し、一方のピークが１〜１０μｍの間に頂点を有し、他方のピークが０．１〜１μｍの間に頂点を有する、成形体。第一ピークが、好ましくは、１０〜３０μｍの間に頂点を持ち、実質的に破砕面を有さない単結晶のα−アルミナ粒子が８０質量％以上含む、成形体。【選択図】なし
MOLDED BODY AND MANUFACTURING METHOD OF MOLDED BODY
成形体、及び、成形体の製造方法
IKOMA TOSHIYUKI (author) / HAMANO RYOHEI (author) / UMEDA TETSU (author) / AZUMA AKIFUMI (author)
2017-09-07
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
B29C
Formen oder Verbinden von Kunststoffen
,
SHAPING OR JOINING OF PLASTICS
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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