Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR PRODUCING CERAMIC BODY
To produce a ceramic body, while suppressing the deterioration of quality due to residual coal and suppressing the oxidation of metal members constituting a firing furnace.SOLUTION: A method for producing a ceramic body of this invention includes a step of preparing a ceramic precursor which is the ceramic precursor before firing of the ceramic body and contains a carbon component. The method further includes a step of heating and firing the ceramic precursor in a reducing atmosphere using a reducing gas containing water vapor, wherein, during the process of raising the temperature of the ceramic precursor to a firing temperature, when the heating temperature is in a first temperature region from a first heating temperature of 800°C or higher to a second heating temperature, the dew point temperature of the reducing gas is set as a first dew point temperature, and when the heating temperature is in a second temperature region from the third heating temperature being equal to or higher than the second heating temperature to the firing temperature, the dew point temperature of the reducing gas is set as a second dew point temperature being lowered by 5°C or more from the first dew point temperature.SELECTED DRAWING: Figure 4
【課題】残炭に起因する品質低下の抑制と焼成炉を構成する金属部材の酸化の抑制とを図りつつ、セラミックス体を製造する。【解決手段】セラミックス体の製造方法は、セラミックス体の焼成前のセラミックス前駆体であって、炭素成分を含むセラミックス前駆体を準備する工程を備える。また、セラミックス前駆体を、水蒸気を含む還元ガスを用いた還元雰囲気で加熱して焼成する工程であって、セラミックス前駆体を焼成温度まで昇温する過程において、加熱温度が、８００℃以上の第１の加熱温度から第２の加熱温度までの第１の温度域にあるときに、還元ガスの露点温度を第１の露点温度とし、加熱温度が、第２の加熱温度以上である第３の加熱温度から焼成温度までの第２の温度域にあるときに、還元ガスの露点温度を、第１の露点温度より５℃以上低い第２の露点温度とする工程を備える。【選択図】図４
METHOD FOR PRODUCING CERAMIC BODY
To produce a ceramic body, while suppressing the deterioration of quality due to residual coal and suppressing the oxidation of metal members constituting a firing furnace.SOLUTION: A method for producing a ceramic body of this invention includes a step of preparing a ceramic precursor which is the ceramic precursor before firing of the ceramic body and contains a carbon component. The method further includes a step of heating and firing the ceramic precursor in a reducing atmosphere using a reducing gas containing water vapor, wherein, during the process of raising the temperature of the ceramic precursor to a firing temperature, when the heating temperature is in a first temperature region from a first heating temperature of 800°C or higher to a second heating temperature, the dew point temperature of the reducing gas is set as a first dew point temperature, and when the heating temperature is in a second temperature region from the third heating temperature being equal to or higher than the second heating temperature to the firing temperature, the dew point temperature of the reducing gas is set as a second dew point temperature being lowered by 5°C or more from the first dew point temperature.SELECTED DRAWING: Figure 4
【課題】残炭に起因する品質低下の抑制と焼成炉を構成する金属部材の酸化の抑制とを図りつつ、セラミックス体を製造する。【解決手段】セラミックス体の製造方法は、セラミックス体の焼成前のセラミックス前駆体であって、炭素成分を含むセラミックス前駆体を準備する工程を備える。また、セラミックス前駆体を、水蒸気を含む還元ガスを用いた還元雰囲気で加熱して焼成する工程であって、セラミックス前駆体を焼成温度まで昇温する過程において、加熱温度が、８００℃以上の第１の加熱温度から第２の加熱温度までの第１の温度域にあるときに、還元ガスの露点温度を第１の露点温度とし、加熱温度が、第２の加熱温度以上である第３の加熱温度から焼成温度までの第２の温度域にあるときに、還元ガスの露点温度を、第１の露点温度より５℃以上低い第２の露点温度とする工程を備える。【選択図】図４
METHOD FOR PRODUCING CERAMIC BODY
セラミックス体の製造方法
KURIBAYASHI MAKOTO (Autor:in)
29.10.2020
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
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