Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Machinable Zirconia
Provided is a machinable zirconia having high translucency as a sintered body which is formed to include a tetragonal zirconia composite powder containing 79.8 to 92 mol% ZrO 2 , 4.5 to 10.2 mol% Y 2 O 3 , and 3.5 to 7.5 mol% Nb 2 O 5 , or 5.5 to 10.0 mol% Ta 2 O 5 and a TiO 2 nano powder which is added with a weight ratio of more than 0 wt% to 2.5 wt% to the composite powder, wherein a density of the sintered body is 99% or more, an average grain size of the sintered body is 2 µm or larger, hardness of the sintered body is in a range of 4 to 10 GPa, fracture toughness of the sintered body is in a range of 9 to 14 MPa·m 1/2 , a strength of the sintered body is in a range of 400 to 1000 MPa.
Machinable Zirconia
Provided is a machinable zirconia having high translucency as a sintered body which is formed to include a tetragonal zirconia composite powder containing 79.8 to 92 mol% ZrO 2 , 4.5 to 10.2 mol% Y 2 O 3 , and 3.5 to 7.5 mol% Nb 2 O 5 , or 5.5 to 10.0 mol% Ta 2 O 5 and a TiO 2 nano powder which is added with a weight ratio of more than 0 wt% to 2.5 wt% to the composite powder, wherein a density of the sintered body is 99% or more, an average grain size of the sintered body is 2 µm or larger, hardness of the sintered body is in a range of 4 to 10 GPa, fracture toughness of the sintered body is in a range of 9 to 14 MPa·m 1/2 , a strength of the sintered body is in a range of 400 to 1000 MPa.
Machinable Zirconia
Bearbeitbares Zirkonoxid
Zircone usinable
KIM DAE-JOON (Autor:in) / KIM SANG WOOK (Autor:in) / SEO SEUNG WON (Autor:in) / JEONG YONG HWAN (Autor:in)
24.08.2022
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Mechanical Properties of Machinable Zirconia Dental Composites
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