Title:
A manufacturing method of processability zirconia and processability zirconia
Document Type and Number:
Japanese Patent JP5973546
Kind Code:
B2
Abstract:
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.
Inventors:
Kim Dae Joon
Kim Sang Wook
Sosungwon
John Young Fan
Kim Sang Wook
Sosungwon
John Young Fan
Application Number:
JP2014266166A
Publication Date:
August 23, 2016
Filing Date:
December 26, 2014
Export Citation:
Assignee:
Accusera Inc.
International Classes:
C04B35/48; A61C13/083
Domestic Patent References:
| JP2000191372A | ||||
| JP6263533A | ||||
| JP2008222450A | ||||
| JP8117248A | ||||
| JP1290558A | ||||
| JP3237060A |
Foreign References:
| US6380113 |
Attorney, Agent or Firm:
IPD International Patent Business Corporation