A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ALUMINA-ZIRCONIA SINTERED BODY
PROBLEM TO BE SOLVED: To provide an alumina-zirconia sintered body having excellent thermal shock resistance and little degradation of strength in repeated use.SOLUTION: An alumina-zirconia sintered body is characterized by having both a tetragonal or cubic crystal zirconia crystal phase and a monoclinic zirconia crystal phase defined in X-ray diffraction. The sintered body has a crack connecting a grain boundary of a zirconia crystal phase and a grain boundary of another zirconia crystal phase or a pore in an alumina grain. The ratio of the total area of the crack to the area of the alumina grain is preferably 0.3%-3.0%.SELECTED DRAWING: Figure 1
【課題】本発明は、耐熱衝撃性が優れながらも、繰り返しの使用において強度の低下が小さいアルミナ・ジルコニア質焼結体を提供する。【解決手段】アルミナ・ジルコニア質焼結体は、Ｘ線回折で定義される正方晶或いは立方晶ジルコニア結晶相と、単斜晶ジルコニア結晶相を併せ持つことを特徴とする。アルミナ粒子内に、ジルコニア結晶相との粒界から他のジルコニア結晶相又は気孔との粒界までを結ぶ亀裂を有し、該亀裂の総延長の割合がアルミナ粒子面積に対して０．３％〜３．０％であることが好ましい。【選択図】図１
ALUMINA-ZIRCONIA SINTERED BODY
PROBLEM TO BE SOLVED: To provide an alumina-zirconia sintered body having excellent thermal shock resistance and little degradation of strength in repeated use.SOLUTION: An alumina-zirconia sintered body is characterized by having both a tetragonal or cubic crystal zirconia crystal phase and a monoclinic zirconia crystal phase defined in X-ray diffraction. The sintered body has a crack connecting a grain boundary of a zirconia crystal phase and a grain boundary of another zirconia crystal phase or a pore in an alumina grain. The ratio of the total area of the crack to the area of the alumina grain is preferably 0.3%-3.0%.SELECTED DRAWING: Figure 1
【課題】本発明は、耐熱衝撃性が優れながらも、繰り返しの使用において強度の低下が小さいアルミナ・ジルコニア質焼結体を提供する。【解決手段】アルミナ・ジルコニア質焼結体は、Ｘ線回折で定義される正方晶或いは立方晶ジルコニア結晶相と、単斜晶ジルコニア結晶相を併せ持つことを特徴とする。アルミナ粒子内に、ジルコニア結晶相との粒界から他のジルコニア結晶相又は気孔との粒界までを結ぶ亀裂を有し、該亀裂の総延長の割合がアルミナ粒子面積に対して０．３％〜３．０％であることが好ましい。【選択図】図１
ALUMINA-ZIRCONIA SINTERED BODY
アルミナ・ジルコニア質焼結体
NAKAMOTO KENSUKE (author) / UCHIDA TATSUHIKO (author)
2016-07-25
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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