A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ZIRCONIA SINTERED BODY AND MANUFACTURING METHOD THEREOF
To provide a zirconia sintered body having high mechanical strength in a state of after sintering, i.e., in a state of not having been treated such as polishing after sintering, and a manufacturing method thereof.SOLUTION: The zirconia sintered body is characterized by involving a crystal grain having a cubic crystal domain and a tetragonal domain, containing a stabilizer and lanthanum in a solid solution state, and having an average crystallite diameter calculated by a half band width of a peak of 2θ=30±2° in a powder X-ray diffraction pattern using CuKα as a radiation source of 255 nm or under, and an arithmetic average roughness of its surface of 20 nm or over 60 nm or under.SELECTED DRAWING: None
【課題】焼結後の状態、すなわち研磨等の焼結後の処理を施さない状態であっても、高い機械的強度を有するジルコニア焼結体及びその製造方法を提供することを目的とする。【解決手段】立方晶ドメイン及び正方晶ドメインを有する結晶粒子を含み、安定化剤及びランタンを固溶し、なおかつ、ＣｕＫαを線源とする粉末Ｘ線回折パターンにおける２θ＝３０±２°のピークの半値幅から算出される平均結晶子径が２５５ｎｍ以下であり、表面の算術平均粗さが２０ｎｍ以上６０ｎｍ以下であることを特徴とするジルコニア焼結体。【選択図】 なし
ZIRCONIA SINTERED BODY AND MANUFACTURING METHOD THEREOF
To provide a zirconia sintered body having high mechanical strength in a state of after sintering, i.e., in a state of not having been treated such as polishing after sintering, and a manufacturing method thereof.SOLUTION: The zirconia sintered body is characterized by involving a crystal grain having a cubic crystal domain and a tetragonal domain, containing a stabilizer and lanthanum in a solid solution state, and having an average crystallite diameter calculated by a half band width of a peak of 2θ=30±2° in a powder X-ray diffraction pattern using CuKα as a radiation source of 255 nm or under, and an arithmetic average roughness of its surface of 20 nm or over 60 nm or under.SELECTED DRAWING: None
【課題】焼結後の状態、すなわち研磨等の焼結後の処理を施さない状態であっても、高い機械的強度を有するジルコニア焼結体及びその製造方法を提供することを目的とする。【解決手段】立方晶ドメイン及び正方晶ドメインを有する結晶粒子を含み、安定化剤及びランタンを固溶し、なおかつ、ＣｕＫαを線源とする粉末Ｘ線回折パターンにおける２θ＝３０±２°のピークの半値幅から算出される平均結晶子径が２５５ｎｍ以下であり、表面の算術平均粗さが２０ｎｍ以上６０ｎｍ以下であることを特徴とするジルコニア焼結体。【選択図】 なし
ZIRCONIA SINTERED BODY AND MANUFACTURING METHOD THEREOF
ジルコニア焼結体及びその製造方法
MACHIDA YUYA (author) / ITO TAKESHI (author) / YAMASHITA ISAO (author) / YAMAUCHI SHOICHI (author)
2020-01-09
Patent
Electronic Resource
Japanese
| European Patent Office | 2016
| European Patent Office | 2019
| European Patent Office | 2016
| European Patent Office | 2019