Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD OF PRODUCING TITANIUM BORIDE/ZIRCONIA-ALUMINA COMPOSITE, AND TITANIUM BORIDE/ZIRCONIA-ALUMINA COMPOSITE OF EXCELLENT HARDNESS AND TOUGHNESS
To provide a titanium boride/zirconia-alumina composite of high hardness and excellent toughness, and a method of producing the same.SOLUTION: There is provided a method of producing a titanium boride/zirconia-alumina composite, comprising a process (A) of preparing a TiBpowder mixture by mixing titanium boride (TiB) powder of a mean particle diameter of 2.5 to 4.0 μm and TiBpowder of a mean particle diameter of 0.3 to 0.8 μm by a weight ratio of 6:4 to 8:2, a process (B) of preparing a YOpartially stabilized ZrO/AlOpowder mixture by mixing YOpartially stabilized ZrOpowder having a molar ratio of Zirconia (ZrO)/Yttria (YO) of 97.0:3.0 to 98.0:2.0 and Alumina (AlO) powder by a molar ratio of 80:20 to 75:25, and a process (C) of mixing the TiBpowder mixture and the YOpartially stabilized ZrO/AlOpowder mixture by a volume ratio of 80:20 to 60:40, molding the resulting powder mixture by a cold isostatic press, and thereafter sintering the resulting molding under a pressure of 30 to 60 Mpa, at a temperature of 1500 to 2000°C for a period of 3 to 30 minutes under an inert gas atmosphere by a pulse energized pressure sintering method.SELECTED DRAWING: None
【課題】高硬度・強靱性ホウ化チタン／ジルコニア‐アルミナ系コンポジット及びその製造方法を提供する。【解決手段】平均粒子径2.5〜4.0μｍのホウ化チタン(TiB2)粉末と、平均粒子径0.3〜0.8μｍのTiB2粉末が6:4〜8:2の重量比率にて混合してなるTiB2混合粉体を準備し（工程Ａ）、ジルコニア(ZrO2)及びイットリア(Y2O3)としてのモル比率が97.0:3.0〜98.0:2.0であるY2O3部分安定化ZrO2粉末と、アルミナ(Al2O3)粉末が80:20〜75:25のモル比率にて混合してなるY2O3部分安定化ZrO2／Al2O3混合粉体を準備し（工程Ｂ）、前記TiB2混合粉体とY2O3部分安定化ZrO2／Al2O3混合粉体を80:20〜60:40の体積比率にて混合し、得られた混合粉体を冷間静水圧プレスにて成形した後、パルス通電加圧焼結法で、不活性ガス雰囲気下、圧力30〜60 MPa、1500〜2000℃にて3〜30分焼結する（工程Ｃ）。【選択図】なし
METHOD OF PRODUCING TITANIUM BORIDE/ZIRCONIA-ALUMINA COMPOSITE, AND TITANIUM BORIDE/ZIRCONIA-ALUMINA COMPOSITE OF EXCELLENT HARDNESS AND TOUGHNESS
To provide a titanium boride/zirconia-alumina composite of high hardness and excellent toughness, and a method of producing the same.SOLUTION: There is provided a method of producing a titanium boride/zirconia-alumina composite, comprising a process (A) of preparing a TiBpowder mixture by mixing titanium boride (TiB) powder of a mean particle diameter of 2.5 to 4.0 μm and TiBpowder of a mean particle diameter of 0.3 to 0.8 μm by a weight ratio of 6:4 to 8:2, a process (B) of preparing a YOpartially stabilized ZrO/AlOpowder mixture by mixing YOpartially stabilized ZrOpowder having a molar ratio of Zirconia (ZrO)/Yttria (YO) of 97.0:3.0 to 98.0:2.0 and Alumina (AlO) powder by a molar ratio of 80:20 to 75:25, and a process (C) of mixing the TiBpowder mixture and the YOpartially stabilized ZrO/AlOpowder mixture by a volume ratio of 80:20 to 60:40, molding the resulting powder mixture by a cold isostatic press, and thereafter sintering the resulting molding under a pressure of 30 to 60 Mpa, at a temperature of 1500 to 2000°C for a period of 3 to 30 minutes under an inert gas atmosphere by a pulse energized pressure sintering method.SELECTED DRAWING: None
【課題】高硬度・強靱性ホウ化チタン／ジルコニア‐アルミナ系コンポジット及びその製造方法を提供する。【解決手段】平均粒子径2.5〜4.0μｍのホウ化チタン(TiB2)粉末と、平均粒子径0.3〜0.8μｍのTiB2粉末が6:4〜8:2の重量比率にて混合してなるTiB2混合粉体を準備し（工程Ａ）、ジルコニア(ZrO2)及びイットリア(Y2O3)としてのモル比率が97.0:3.0〜98.0:2.0であるY2O3部分安定化ZrO2粉末と、アルミナ(Al2O3)粉末が80:20〜75:25のモル比率にて混合してなるY2O3部分安定化ZrO2／Al2O3混合粉体を準備し（工程Ｂ）、前記TiB2混合粉体とY2O3部分安定化ZrO2／Al2O3混合粉体を80:20〜60:40の体積比率にて混合し、得られた混合粉体を冷間静水圧プレスにて成形した後、パルス通電加圧焼結法で、不活性ガス雰囲気下、圧力30〜60 MPa、1500〜2000℃にて3〜30分焼結する（工程Ｃ）。【選択図】なし
METHOD OF PRODUCING TITANIUM BORIDE/ZIRCONIA-ALUMINA COMPOSITE, AND TITANIUM BORIDE/ZIRCONIA-ALUMINA COMPOSITE OF EXCELLENT HARDNESS AND TOUGHNESS
ホウ化チタン／ジルコニア‐アルミナ系コンポジットの製造方法及び、優れた硬度及び靱性を有するホウ化チタン／ジルコニア‐アルミナ系コンポジット
HIROTA TAKESHI (Autor:in) / KATO MASAKI (Autor:in) / YOSHIDA MASASHI (Autor:in)
14.03.2019
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
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