Left of the eutectic there is a similar relationship •The melt crystallizes over a T range up to ~280oC •A sequence of minerals forms over this interval - And the number of minerals increases as T drops •The minerals that crystallize depend upon T - The sequence changes with the bulk composition Augite Forms Before Plagioclase
共晶系统 - 百度百科
共晶系统（ 英语：eutectic system），是指两个不同化学物质或元素，在混合后，能够在比各自熔点还要低的熔点中，进行加热熔合，形成单一化合物。 网页 新闻 贴吧 知道 网盘 图片 视频 地图 文库 资讯 采购 百科
共晶系統 - 维基百科，自由的百科全书
共晶系統 或 共熔系統 （英語： eutectic system）， 冶金學 名詞，是指兩個不同 化學物質 或元素，在以某一特定比例混合後，能夠在比各自 熔點 還要低的溫度下，進行加熱熔合，形成均匀的混合物（mixture）。 用來形成共晶系統的混合物被稱為 共晶混合物 或 共熔混合物 （eutectic mixture），形成的化合物被稱為 共晶組成物 或 共熔組成物 （eutectic composition），而這個熔合溫度則稱為 共晶溫度 或 共熔溫度 （eutectic temperature）。 在 相图 上定义共晶点的坐标是 …
Isobaric diagram illustrating the cotectic and peritectic curves in the system forsterite-anorthite-silica at 0.1 MPa.
8.9: Solid-Liquid Systems - Eutectic Points - Chemistry LibreTexts
Jan 16, 2023 · A phase diagram for two immiscible solids and the liquid phase (which is miscible in all proportions) is shown in Figure \(\PageIndex{1}\). The point labeled “e 2 ” is the eutectic point, meaning the composition for which the mixture of the two solids has the lowest melting point. The four main regions can be described as below:
These binary systems, with unlimited liquid state miscibility and low or negligible solid state miscibility, are referred to as eutectic systems. Figure by MIT OCW. Schematic representations of the equilibrium microstructures for a lead-tin alloy of composition C4 as it is cooled from the liquid-phase region. Figure by MIT OCW.
the various types of eutectic morphologies: regular, irregular, nodular, di- vorced and multi-component/multi-phase eutectics. We describe the morphologies associated with the peritectic transfor-
Eutectic Systems Example: Diopside - Anorthite No solid solution Cooling continues as Xliq varies along the liquidus Continuous reaction: liqA ® anorthite + liqB At 1274oC f = 3 (three phases co-exist) Therefore, F = 2 - 3 + 1 = 0 This is an invariant point (P) T and the composition of all phases is fixed Must remain at 1274oC as a ...
Composition formulas of binary eutectics | Scientific Reports
Dec 14, 2015 · In a typical eutectic reaction, two solid phases transform to or from a single liquid phase at a specific composition and temperature. In spite of the obvious fundamental as well as engineering...
Eutectic Structure - SpringerLink
May 18, 2023 · Eutectic structure is an alloy structure created from two or more closely adjacent solid phases precipitating simultaneously or alternately from the same homogeneous liquid phase in eutectic reaction.