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相転移

41 件の記事

P-T Diagram for SiO2

クリストバライト高温で形成されるシリカの多形鉱物

クリストバライトシリカ二酸化ケイ素多形
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A phase diagram for a fictitious binary chemical mixture (with the two components denoted by A and B) used to depict the eutectic composition, temperature, and point. (L denotes the liquid state.)

共晶系（ユテクティック）の仕組みと産業利用融点降下が生み出す機能性材料

共晶系共晶点相図融点降下
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Solid phase transitions which transform reversibly without passing through the liquid or gaseous phases are called enantiotropic. In contrast, if the modifications are not convertible under these conditions, the system is monotropic. Experimental data are used to differentiate between enantiotropic and monotropic transitions and energy/temperature semi-quantitative diagrams can be drawn by applying several rules, principally the heat-of-transition rule, the heat-of-fusion rule and the density rule. These rules enable the deduction of the relative positions of the H and G isobars in the E/T diagram. [1]

多形現象（ポリモーフィズム）の科学結晶構造の多様性と物性への影響

多形現象ポリモーフィズム結晶構造相転移
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P-T Diagram for SiO2, Low Quartz, α-quartz, has a trigonal crystal system, while High Quartz, β-quartz, has a hexagonal crystal system.

石英の相転移とセラミックス製造への影響

石英α-石英β-石英相転移
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P-T Diagram for SiO2, Low Quartz, α-quartz, has a trigonal crystal system, while High Quartz, β-quartz, has a hexagonal crystal system.

石英の相転移とセラミックス製造への影響

石英α-石英β-石英相転移
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The formation of a spherical droplet of liquid water minimizes the surface area, which is the natural result of surface tension in liquids.

液体とは何か物理的特性から微視的構造までを解説

液体流体力学粘度表面張力
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Dark green crystals of nickelocene, sublimed and freshly deposited on a cold finger

昇華のメカニズムと応用固体から気体へ直接変化する現象を解説

昇華相転移ドライアイス凝華
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マントル遷移層の構造と相転移のメカニズム

マントル遷移層相転移410km不連続面660km不連続面
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A typical phase diagram. The solid green line applies to most substances; the dashed green line gives the anomalous behavior of water

三重点とは何か？物質の状態が共存する特異な温度と圧力

三重点熱力学相図水
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Simulation of thermal convection in the Earth's mantle. Colors span from red and green to blue with decreasing temperatures. A hot, less-dense lower boundary layer sends plumes of hot material upwards, and cold material from the top moves downwards.

熱伝達のメカニズムと工学的応用エネルギー移動の科学

熱伝達熱伝導対流熱放射
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Dark green crystals of nickelocene, sublimed and freshly deposited on a cold finger

昇華の仕組みと応用固体から気体へ直接変化する物理現象

昇華相転移ドライアイス凝華
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An image of the 2d Bak-Tang-Wiesenfeld sandpile, the original model of self-organized criticality.

自己組織化臨界現象（SOC）が解き明かす自然界の複雑性と秩序

自己組織化臨界現象SOC複雑系スケール不変性
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