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A platform for research: civil engineering, architecture and urbanism
GRAPHITE MATERIAL MODIFICATION METHOD AND GRAPHITE MATERIAL
To provide a modification method for modifying a commercially available graphite material in a short time using a simple method, and a graphite material that has a high coefficient of thermal expansion modified by the modification method.SOLUTION: Provided is a method for modifying a graphite material in which the graphite material is plastically deformed by applying a compressive load to the graphite material while heated to 2300°C to 2600°C in a non-oxidizing atmosphere using an electrical heating method, in particular, by applying a compressive load of 20% to 50% of the compressive strength of the graphite material while heated to 2300°C to 2600°C in a non-oxidizing atmosphere, the thermal expansion coefficient at least in the pressing direction can be improved by 5% or more to the coefficient of thermal expansion of the graphite material before modification, and also, by applying a compressive load of 20% to 30% of the compressive strength to the graphite material while heating to 2300°C to 2400°C in a non-oxidizing atmosphere, a modification method for increasing the coefficient of thermal expansion of graphite material in both the pressing direction and the direction orthogonal to the pressing direction.SELECTED DRAWING: Figure 1
【課題】簡便な方法によって短時間で市販の黒鉛材料を改質する改質方法と、この改質方法で改質されて高熱膨張係数を有する黒鉛材料を提供する。【解決手段】通電加熱法によって非酸化性雰囲気下において２３００℃～２６００℃に加熱した状態で、黒鉛材料に圧縮荷重をかけることにより黒鉛材料を塑性変形させる黒鉛材料の改質方法、特に非酸化性雰囲気下において２３００℃～２６００℃に加熱した状態で、黒鉛材料にその圧縮強度に対して２０％～５０％の圧縮荷重をかけることにより、少なくとも加圧方向の熱膨張係数を改質前の黒鉛材料の熱膨張係数に対して５％以上高める改質方法、並びに非酸化性雰囲気下において２３００℃～２４００℃に加熱した状態で、黒鉛材料にその圧縮強度の２０％～３０％の圧縮荷重をかけることにより、黒鉛材料の加圧方向及び加圧方向に直交する方向の両方の熱膨張係数を高める改質方法を提供する。【選択図】図１
GRAPHITE MATERIAL MODIFICATION METHOD AND GRAPHITE MATERIAL
To provide a modification method for modifying a commercially available graphite material in a short time using a simple method, and a graphite material that has a high coefficient of thermal expansion modified by the modification method.SOLUTION: Provided is a method for modifying a graphite material in which the graphite material is plastically deformed by applying a compressive load to the graphite material while heated to 2300°C to 2600°C in a non-oxidizing atmosphere using an electrical heating method, in particular, by applying a compressive load of 20% to 50% of the compressive strength of the graphite material while heated to 2300°C to 2600°C in a non-oxidizing atmosphere, the thermal expansion coefficient at least in the pressing direction can be improved by 5% or more to the coefficient of thermal expansion of the graphite material before modification, and also, by applying a compressive load of 20% to 30% of the compressive strength to the graphite material while heating to 2300°C to 2400°C in a non-oxidizing atmosphere, a modification method for increasing the coefficient of thermal expansion of graphite material in both the pressing direction and the direction orthogonal to the pressing direction.SELECTED DRAWING: Figure 1
【課題】簡便な方法によって短時間で市販の黒鉛材料を改質する改質方法と、この改質方法で改質されて高熱膨張係数を有する黒鉛材料を提供する。【解決手段】通電加熱法によって非酸化性雰囲気下において２３００℃～２６００℃に加熱した状態で、黒鉛材料に圧縮荷重をかけることにより黒鉛材料を塑性変形させる黒鉛材料の改質方法、特に非酸化性雰囲気下において２３００℃～２６００℃に加熱した状態で、黒鉛材料にその圧縮強度に対して２０％～５０％の圧縮荷重をかけることにより、少なくとも加圧方向の熱膨張係数を改質前の黒鉛材料の熱膨張係数に対して５％以上高める改質方法、並びに非酸化性雰囲気下において２３００℃～２４００℃に加熱した状態で、黒鉛材料にその圧縮強度の２０％～３０％の圧縮荷重をかけることにより、黒鉛材料の加圧方向及び加圧方向に直交する方向の両方の熱膨張係数を高める改質方法を提供する。【選択図】図１
GRAPHITE MATERIAL MODIFICATION METHOD AND GRAPHITE MATERIAL
黒鉛材料の改質方法及び黒鉛材料
SOGABE TOSHIAKI (author) / TERADA TOMOYO (author) / PHAN THI PHONG GAT (author) / KATO SUNAO (author) / SHIOZAKI TOMOHIRO (author)
2024-09-20
Patent
Electronic Resource
Japanese
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