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SPARK PLASMA SINTERING METHOD, CROWN MATERIAL PRODUCTION METHOD, AND SPARK PLASMA SINTERING DEVICE

Foreign code F160008809
File No. (S2014-1426-N0)
Posted date Aug 4, 2016
Country WIPO
International application number 2015JP070606
International publication number WO 2016035461
Date of international filing Jul 17, 2015
Date of international publication Mar 10, 2016
Priority data
  • P2014-179361 (Sep 3, 2014) JP
Title SPARK PLASMA SINTERING METHOD, CROWN MATERIAL PRODUCTION METHOD, AND SPARK PLASMA SINTERING DEVICE
Abstract This spark plasma sintering device comprises a graphite sintering die (4), a pipe (5), or the like, for supplying an oxidizing gas into the sintering die (4), a pressure-applying means for applying a load on a powder raw material (1) filled in the sintering die (4), and a current-applying means for running a current in the powder raw material (1) filled in the sintering die (4).
Scope of claims [claim1]
1.  The powder material containing oxide ceramic comprising the steps of filling the raw material filling part in the graphite die,  Together with applying a load to the powder raw material by the first punch and the second punch sandwiching the powder material, generating a plasma by passing a pulsed current between said first punch and the second punch and sintering the powder raw material by,  Have,  Step supplies an oxidizing gas from the outside into the material filling unit, a spark plasma sintering method characterized by suppressing the reduction of the powder raw material sintering the powder material.
[2]
[claim2]
2.  The powder material containing oxide ceramic comprising the steps of filling the raw material filling part in the graphite die,  Together with applying a load to the powder raw material by the first punch and the second punch sandwiching the powder material, generating a plasma by passing a pulsed current between said first punch and the second punch and sintering the powder raw material by,  Have,  Step, the raw material filling part an oxidizing gas is supplied from the outside to the method for manufacturing a dental crown material, characterized in that to suppress the reduction of the powder raw material sintering the powder material.
[3]
[claim3]
3.  The crown material is made of a composite material of 50% by volume to 99% by volume of zirconia and 1% by volume to 50% by volume of the porcelain,  The composite material, wherein the abutment side crown material is bonded toward the opposite side, claim, wherein the ratio of the stepwise or continuously the porcelain is a functionally gradient material is higher 2 method of manufacturing a dental crown material according to.
[4]
[claim4]
4.  The tilt function material is made of the ratio of the porcelain from a plurality of different layers,  Method for producing a dental crown material according to claim 3, characterized in that the respective thicknesses of said plurality of layers is changed is or stepwise identical.
[5]
[claim5]
5.  Examples of the oxidizing gas, air, oxygen gas, production method crown material according to any one of claims 2 to 4, characterized in that the use of ozone or hydrogen peroxide gas, or any combination thereof.
[6]
[claim6]
6.  And graphite die,  And oxidizing gas supply means for supplying from outside the oxidizing gas to the raw material filling part in the graphite die,  And pressurizing means for applying a load to the powder material filled into the graphite die by a first punch and a second punch,  Energizing means for supplying a pulse-like current between said second punch and said first punch,  Spark plasma sintering apparatus characterized by having a.
[7]
[claim7]
7.  The supply of oxidizing gas, the graphite die, according to claim 6, characterized in that takes place via the first punch or the second punches or first vent hole through any combination thereof spark plasma sintering apparatus according to.
[8]
[claim8]
8.  The first vent hole is formed in at least the second punch,  Supply of the oxidizing gas includes a plurality of second ventilation holes via a spacer disposed between the second of the opening and the material filling portion of the first vent hole in the punch spark plasma sintering apparatus according to claim 7, characterized in that is carried out on.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • KAGOSHIMA UNIVERSITY
  • Inventor
  • TSUKADA GAKUJI
  • SUEYOSHI HIDEKAZU
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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