① Eutectoid point : A mixture of two or more different types of crystals that precipitate simultaneously from a solid solution [Kubo et al.: 1987]. ② Eutectoid : A mixture of two or more different crystals that precipitate simultaneously from a solid solution, formed by exsolution in the solid state. It is a similar phenomenon to the formation of a eutectic mixture from a solution, and is often seen in alloys. It is also called a pseudoeutectic [Nagakura et al.: 1998]. A crystal precipitated by a eutectoid reaction [Shimizu, Nagasaki: 1977]. Source: Asakura Publishing Dictionary of Petrology Information |
① eutectoid point: 固溶体から同時に析出する二種またはそれ以上の異なる結晶の混合物[久保ほか : 1987]. ② eutectoid: 固体状態で離溶(exsolution)による形成物で,固溶体から同時に析出する二種またはそれ以上の異なる結晶の混合物.溶液から共融混合物の出るのと類似の現象で,合金などに例が多い.擬共晶ということもある[長倉ほか : 1998].共析反応で析出した結晶[志水,長崎 : 1977]. 出典 朝倉書店岩石学辞典について 情報 |
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