A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ZIRCONIA CALCINATED BODY AND MANUFACTURING METHOD THEREFOR
PROBLEM TO BE SOLVED: To provide a calcinated body which can expect to have more excellent mechanical processability compared to conventional calcinated bodies, and a manufacturing method industrially applicable to such calcinated body.SOLUTION: There is provided a zirconia calcinated body having percentage content of particles with maximum diameter of 1 μm of 15/μmor less and density of 2.8 g/cmto 3.6 g/cm. Such calcinated body can be obtained by a manufacturing method having a molding process for molding a zirconia powder having a ratio of particle diameter calculated by electron microscope observation to particle diameter calculated by BET specific area of 2.2 to 4.0 and a calcination process for calcinating the resulting molded body at 800°C to 1100°C.SELECTED DRAWING: Figure 1
【課題】従来の仮焼体と比べて、より優れた機械加工性が期待できる仮焼体及びこの様な仮焼体の工業的に適用可能な製造方法を提供する。【解決手段】最大径が１μｍ以上の粒子の含有割合が１５個／μｍ２以下であり、密度が２．８ｇ／ｃｍ３以上３．６ｇ／ｃｍ３以下であるジルコニア仮焼体。このような仮焼体は、ＢＥＴ比表面積から求められる粒子径に対する電子顕微鏡観察により求められる粒子径の比が２．２以上４．０以下であるジルコニア粉末を成形する成型工程、及び、得られた成形体を８００℃以上１１００℃以下で焼成する焼成工程、を有する製造方法により得ることができる。【選択図】図１
ZIRCONIA CALCINATED BODY AND MANUFACTURING METHOD THEREFOR
PROBLEM TO BE SOLVED: To provide a calcinated body which can expect to have more excellent mechanical processability compared to conventional calcinated bodies, and a manufacturing method industrially applicable to such calcinated body.SOLUTION: There is provided a zirconia calcinated body having percentage content of particles with maximum diameter of 1 μm of 15/μmor less and density of 2.8 g/cmto 3.6 g/cm. Such calcinated body can be obtained by a manufacturing method having a molding process for molding a zirconia powder having a ratio of particle diameter calculated by electron microscope observation to particle diameter calculated by BET specific area of 2.2 to 4.0 and a calcination process for calcinating the resulting molded body at 800°C to 1100°C.SELECTED DRAWING: Figure 1
【課題】従来の仮焼体と比べて、より優れた機械加工性が期待できる仮焼体及びこの様な仮焼体の工業的に適用可能な製造方法を提供する。【解決手段】最大径が１μｍ以上の粒子の含有割合が１５個／μｍ２以下であり、密度が２．８ｇ／ｃｍ３以上３．６ｇ／ｃｍ３以下であるジルコニア仮焼体。このような仮焼体は、ＢＥＴ比表面積から求められる粒子径に対する電子顕微鏡観察により求められる粒子径の比が２．２以上４．０以下であるジルコニア粉末を成形する成型工程、及び、得られた成形体を８００℃以上１１００℃以下で焼成する焼成工程、を有する製造方法により得ることができる。【選択図】図１
ZIRCONIA CALCINATED BODY AND MANUFACTURING METHOD THEREFOR
ジルコニア仮焼体及びその製造方法
MATSUI KOJI (author)
2018-01-25
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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