Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR PRODUCING TRANSPARENT CERAMIC
To provide a method for producing a transparent ceramic having high permeability, also having uniform insertion loss over an in-plane whole area and free from bubble defects.SOLUTION: A method for producing a transparent ceramic comprises the steps in which: a candidate composition comprising a binder, optionally a dispersant and a plasticizer is obtained; the candidate composition is dissolved into a solvent, thereafter, the amount of the solvent is reduced to 0.1 mass% or lower, and a glass transition point thereof is measured; a candidate composition having the glass transition point of 25°C or higher and 60°C or lower is selected as an organic additive composition; with the composition obtained in the selecting step, an organic additive composition comprising the binder, optionally the dispersant and the plasticizer is prepared; raw material for sintering formed from metal oxide powder and the organic additive composition are pulverized to obtain a pulverized mixture; the pulverized mixture is granulated; the granulated mixture is sintered to obtain a sintered compact; and the sintered compact is pressurized.SELECTED DRAWING: None
【課題】 高い透過率を持ちかつ面内全域で均一な挿入損失を持つ気泡欠陥のない透明セラミックスの製造方法。【解決手段】透明セラミックスの製造方法であって、バインダーと、任意選択的に分散剤と、可塑剤とを含む候補組成物を得る工程と、前記候補組成物を溶媒に溶解した後、含溶媒量を０．１質量％以下まで低下させ、ガラス転移点を測定する工程と、当該ガラス転移点が２５℃以上であって６０℃以下である候補組成物を有機添加剤組成物として選定する工程と、前記選定する工程において得られた組成にて、前記バインダーと、任意選択的に分散剤と、可塑剤とを含む有機添加剤組成物を調製する工程と、金属酸化物粉末から形成された焼結用原料と、前記有機添加剤組成物とを粉砕して粉砕混合物を得る工程と、前記粉砕混合物を顆粒化する工程と、前記顆粒化された混合物を焼結して焼結体を得る工程と、前記焼結体を加圧する工程とを含む方法。【選択図】 なし
METHOD FOR PRODUCING TRANSPARENT CERAMIC
To provide a method for producing a transparent ceramic having high permeability, also having uniform insertion loss over an in-plane whole area and free from bubble defects.SOLUTION: A method for producing a transparent ceramic comprises the steps in which: a candidate composition comprising a binder, optionally a dispersant and a plasticizer is obtained; the candidate composition is dissolved into a solvent, thereafter, the amount of the solvent is reduced to 0.1 mass% or lower, and a glass transition point thereof is measured; a candidate composition having the glass transition point of 25°C or higher and 60°C or lower is selected as an organic additive composition; with the composition obtained in the selecting step, an organic additive composition comprising the binder, optionally the dispersant and the plasticizer is prepared; raw material for sintering formed from metal oxide powder and the organic additive composition are pulverized to obtain a pulverized mixture; the pulverized mixture is granulated; the granulated mixture is sintered to obtain a sintered compact; and the sintered compact is pressurized.SELECTED DRAWING: None
【課題】 高い透過率を持ちかつ面内全域で均一な挿入損失を持つ気泡欠陥のない透明セラミックスの製造方法。【解決手段】透明セラミックスの製造方法であって、バインダーと、任意選択的に分散剤と、可塑剤とを含む候補組成物を得る工程と、前記候補組成物を溶媒に溶解した後、含溶媒量を０．１質量％以下まで低下させ、ガラス転移点を測定する工程と、当該ガラス転移点が２５℃以上であって６０℃以下である候補組成物を有機添加剤組成物として選定する工程と、前記選定する工程において得られた組成にて、前記バインダーと、任意選択的に分散剤と、可塑剤とを含む有機添加剤組成物を調製する工程と、金属酸化物粉末から形成された焼結用原料と、前記有機添加剤組成物とを粉砕して粉砕混合物を得る工程と、前記粉砕混合物を顆粒化する工程と、前記顆粒化された混合物を焼結して焼結体を得る工程と、前記焼結体を加圧する工程とを含む方法。【選択図】 なし
METHOD FOR PRODUCING TRANSPARENT CERAMIC
透明セラミックスの製造方法
TANAKA KEITA (Autor:in)
27.01.2022
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
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