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A platform for research: civil engineering, architecture and urbanism
BORON CARBIDE/TITANIUM BORIDE COMPOSITE CERAMIC AND METHOD FOR PRODUCING THE SAME
PROBLEM TO BE SOLVED: To provide a method for producing a boron carbide/titanium boride composite ceramic having excellent mechanical characteristics at high temperature.SOLUTION: A method includes: a step in which amorphous boron and amorphous carbon are weighed out to a molar ratio of B:C=4:1, and a starting material comprising the amorphous boron and the amorphous carbon is prepared by performing wet blending; a step in which 0.5-1.5 vol%, in terms of inner percentage and relative to boron carbide synthesised from the starting material, of titanium nitride is added to the starting material, then a dispersion treatment is performed in a solvent selected from water and alcohol, and thereafter drying is performed to obtain a mixed powder; and a step in which a molded body is obtained by die-moulding using the mixed powder, an isostatic pressing treatment is performed on the molded body, and thereafter the temperature is increased by heating while applying pressure by a pulse electric current pressure sintering method, and a boron carbide/titanium boride composite ceramic is simultaneously synthesised and sintered.
【課題】高温下での機械的特性に優れた炭化ホウ素／ホウ化チタンコンポジットセラミックスの作製法を提供する。【解決手段】非晶質ホウ素と非晶質炭素をB：C＝4：1のモル比となるように秤量し、湿式混合を行ない、非晶質ホウ素と非晶質炭素とから成る出発原料を調製する工程と、前記出発原料から合成される炭化ホウ素に対して内割りで0.5〜1.5 vol.%のチッ化チタンを前記出発原料に添加し、水及びアルコールから選択される溶媒中にて分散処理し、乾燥を行なって混合粉を得る工程と、前記混合粉を用いて金型成形を行うことにより成形体を得、当該成形体を静水圧プレス処理した後、パルス通電加圧焼結法により加圧しながら加熱昇温し、炭化ホウ素／ホウ化チタンコンポジットセラミックスを合成同時焼結する工程を含む。【選択図】図１
BORON CARBIDE/TITANIUM BORIDE COMPOSITE CERAMIC AND METHOD FOR PRODUCING THE SAME
PROBLEM TO BE SOLVED: To provide a method for producing a boron carbide/titanium boride composite ceramic having excellent mechanical characteristics at high temperature.SOLUTION: A method includes: a step in which amorphous boron and amorphous carbon are weighed out to a molar ratio of B:C=4:1, and a starting material comprising the amorphous boron and the amorphous carbon is prepared by performing wet blending; a step in which 0.5-1.5 vol%, in terms of inner percentage and relative to boron carbide synthesised from the starting material, of titanium nitride is added to the starting material, then a dispersion treatment is performed in a solvent selected from water and alcohol, and thereafter drying is performed to obtain a mixed powder; and a step in which a molded body is obtained by die-moulding using the mixed powder, an isostatic pressing treatment is performed on the molded body, and thereafter the temperature is increased by heating while applying pressure by a pulse electric current pressure sintering method, and a boron carbide/titanium boride composite ceramic is simultaneously synthesised and sintered.
【課題】高温下での機械的特性に優れた炭化ホウ素／ホウ化チタンコンポジットセラミックスの作製法を提供する。【解決手段】非晶質ホウ素と非晶質炭素をB：C＝4：1のモル比となるように秤量し、湿式混合を行ない、非晶質ホウ素と非晶質炭素とから成る出発原料を調製する工程と、前記出発原料から合成される炭化ホウ素に対して内割りで0.5〜1.5 vol.%のチッ化チタンを前記出発原料に添加し、水及びアルコールから選択される溶媒中にて分散処理し、乾燥を行なって混合粉を得る工程と、前記混合粉を用いて金型成形を行うことにより成形体を得、当該成形体を静水圧プレス処理した後、パルス通電加圧焼結法により加圧しながら加熱昇温し、炭化ホウ素／ホウ化チタンコンポジットセラミックスを合成同時焼結する工程を含む。【選択図】図１
BORON CARBIDE/TITANIUM BORIDE COMPOSITE CERAMIC AND METHOD FOR PRODUCING THE SAME
炭化ホウ素／ホウ化チタンコンポジットセラミックス及びその作製法
HIROTA TAKESHI (author) / KATO MASAKI (author) / GOTO NAOKI (author)
2015-08-24
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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