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BASE FOR CERAMIC AND METHOD FOR PRODUCING SINTERED CERAMIC USING SAME
To provide a base for a ceramic and a method for producing a sintered ceramic using the base, by which a ceramic product having an appropriate range of open porosity can be produced while maintaining a white state and suppressing deformation due to shrinkage, bending or warping.SOLUTION: The base for a ceramic contains: a base material having alumina (AlO) of 15 parts by weight or more and 40 parts by weight or less and silica (SiO) of 60 parts by weight or more and 85 parts by weight or less; and metallic silicon (Si) of 5-20 parts by weight relative to 100 parts by weight of the base material; and zirconia (ZrO) of 5-20 parts by weight relative to 100 parts by weight of the base material. The sintering is performed in a temperature range of preferably 1170°C or higher and 1200°C or lower, after a heat treatment is performed in the atmosphere at a temperature lower than the sintering temperature to promote oxidation of Si. Thus, the sintered ceramic having a low open porosity can be obtained, and the shrinkage deformation can be suppressed while maintaining the compactness.SELECTED DRAWING: Figure 2
【課題】白色の状態を維持したまま、曲げや反りなどの収縮に伴う変形を抑制でき、開気孔率も適正な範囲とした陶磁器製品を得ることができる陶磁器用素地とそれを用いた陶磁器焼結体の製造方法の提供。【解決手段】陶磁器用素地は、化学成分として１５重量部以上４０重量部以下のアルミナ（Ａｌ２Ｏ３）および６０重量部以上８５重量部のシリカ（ＳｉＯ２）を含有する素地原料と、前記素地原料１００重量部に対して５〜２０重量部の金属シリコン（Ｓｉ）と、前記素地原料１００重量部に対して５〜２０重量部のジルコニア（ＺｒＯ２）とを含有する。焼結温度よりも低い温度で大気中にて熱処理し、Ｓｉの酸化を促進させた後、好ましくは１１７０℃以上１２００℃以下の温度範囲で焼結を行うことで、開気孔率の低い陶磁器焼結体を得ることができ、緻密度を保ちながら収縮変形を抑制することが可能となる。【選択図】図２
BASE FOR CERAMIC AND METHOD FOR PRODUCING SINTERED CERAMIC USING SAME
To provide a base for a ceramic and a method for producing a sintered ceramic using the base, by which a ceramic product having an appropriate range of open porosity can be produced while maintaining a white state and suppressing deformation due to shrinkage, bending or warping.SOLUTION: The base for a ceramic contains: a base material having alumina (AlO) of 15 parts by weight or more and 40 parts by weight or less and silica (SiO) of 60 parts by weight or more and 85 parts by weight or less; and metallic silicon (Si) of 5-20 parts by weight relative to 100 parts by weight of the base material; and zirconia (ZrO) of 5-20 parts by weight relative to 100 parts by weight of the base material. The sintering is performed in a temperature range of preferably 1170°C or higher and 1200°C or lower, after a heat treatment is performed in the atmosphere at a temperature lower than the sintering temperature to promote oxidation of Si. Thus, the sintered ceramic having a low open porosity can be obtained, and the shrinkage deformation can be suppressed while maintaining the compactness.SELECTED DRAWING: Figure 2
【課題】白色の状態を維持したまま、曲げや反りなどの収縮に伴う変形を抑制でき、開気孔率も適正な範囲とした陶磁器製品を得ることができる陶磁器用素地とそれを用いた陶磁器焼結体の製造方法の提供。【解決手段】陶磁器用素地は、化学成分として１５重量部以上４０重量部以下のアルミナ（Ａｌ２Ｏ３）および６０重量部以上８５重量部のシリカ（ＳｉＯ２）を含有する素地原料と、前記素地原料１００重量部に対して５〜２０重量部の金属シリコン（Ｓｉ）と、前記素地原料１００重量部に対して５〜２０重量部のジルコニア（ＺｒＯ２）とを含有する。焼結温度よりも低い温度で大気中にて熱処理し、Ｓｉの酸化を促進させた後、好ましくは１１７０℃以上１２００℃以下の温度範囲で焼結を行うことで、開気孔率の低い陶磁器焼結体を得ることができ、緻密度を保ちながら収縮変形を抑制することが可能となる。【選択図】図２
BASE FOR CERAMIC AND METHOD FOR PRODUCING SINTERED CERAMIC USING SAME
陶磁器用素地とそれを用いた陶磁器焼結体の製造方法
FURUSHIMA RYOICHI (author) / HIUGA HIDEKI (author)
2020-04-16
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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