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Title:
MACHINABLE ZIRCONIA AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2015127294
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a machinable zirconia having more excellent machinability, and a method for producing the same.SOLUTION: The machinable zirconia related to the present invention is a sintered body which is formed to include: a tetragonal zirconia composite powder containing 79.8 to 92 mol % ZrO, 4.5 to 10.2 mol % YO, 3.5 to 7.5 mol % NbOor 5.5 to 10.0 mol % TaO; and a TiOnano powder having a weight ratio of more than 0 wt % and up to 2.5 wt % with respect 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 MPam, and strength of the sintered body is in a range of 400 to 1000 MPa.

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JP4954057Low thermal expansion article
Inventors:
KIM DAE JUN
KIM SANG WOOK
SEO SEUNG WON
JEONG YONG HWAN
Application Number:
JP2014266166A
Publication Date:
July 09, 2015
Filing Date:
December 26, 2014
Export Citation:
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Assignee:
ACUCELA INC
International Classes:
C04B35/48; A61C13/083
Domestic Patent References:
JP2000191372A2000-07-11
JPH06263533A1994-09-20
JP2008222450A2008-09-25
JPH08117248A1996-05-14
JPH01290558A1989-11-22
JPH03237060A1991-10-22
JP2000191372A2000-07-11
JPH06263533A1994-09-20
JP2008222450A2008-09-25
JPH08117248A1996-05-14
JPH01290558A1989-11-22
JPH03237060A1991-10-22
Foreign References:
US6380113B12002-04-30
US6380113B12002-04-30
Attorney, Agent or Firm:
アイ・ピー・ディー国際特許業務法人



 
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