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首页> 外文期刊>ISIJ international >Phase Equilibria in the System 'MnO'-CaO-MgO-SiO_2-Al_2O_3 with Al_2O_3/SiO_2 Weight Ratio of 0.17 and MgO/CaO Weight Ratio of 0.25 at Mn-Si Alloy Saturation
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Phase Equilibria in the System 'MnO'-CaO-MgO-SiO_2-Al_2O_3 with Al_2O_3/SiO_2 Weight Ratio of 0.17 and MgO/CaO Weight Ratio of 0.25 at Mn-Si Alloy Saturation

机译：Al_2O_3 / SiO_2重量比为0.17，MgO / CaO重量比为0.25的Mn-Si合金饱和状态下的“ MnO” -CaO-MgO-SiO_2-Al_2O_3系统中的相平衡

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摘要

Liquidus isotherms and phase equilibria have been determined experimentally for a pseudo-ternary section of the form "MnO"-(CaO + MgO)-(SiO_2+Al_2O_3) with a fixed Al_2O_3/SiO_2 weight ratio of 0.17 and MgO/CaO weight ratio of 0.25 for temperatures in the range 1393-1673 K. The primary phase fields found in the investigated section include manganosite (Mn, Mg, Ca)O; dicalcium silicate alpha-2(Ca, Mg, Mn)O centre dot SiO_2; merwinite 3CaO centre dot (Mg, Mn)O centre dot SiO_2; melilite [2CaO centre dot (MgO, MnO, AI_2O_3) centre dot 2(SiO_2, Al_2O_3)]; wollastonite [(Ca, Mg, Mn)O centre dot SiO_2]; diopside [(CaO, MgO, MnO, Al_2O_3) centre dot SiO_2]; tridymite (SiO_2); rhodonite [(Mn, Mg, Ca)O centre dot SiO_2]; anorthite (CaO centre dot Al_2O_3 centre dot 2SiO_2) and tephroite [2(Mn, Mg, Ca)O centre dot SiO_2]. The liquidus temperatures and primary phase fields are significantly different to those in the ternary system "MnO"-CaO-SiO_2, but are close to those previously reported pseudo-ternary section "MnO"-(CaO + MgO)-(SiO_2+Al_2O_3) for Al_2O_3/SiO_2 weight ratio of 0.17 and MgO/CaO weight ratio of 0.17. The partitioning of CaO, MgO and MnO between liquid and solid phases was measured using EPMA, and the extents of solid solutions for a range of bulk compositions and temperatures were characterised.
机译：已经通过实验确定了形式为“ MnO”-（CaO + MgO）-（SiO_2 + Al_2O_3）的准三元截面的液相线等温线和相平衡，其中固定的Al_2O_3 / SiO_2重量比为0.17，MgO / CaO重量比为温度在1393-1673 K范围内为0.25。在研究部分中发现的主相场包括锰铁矿（Mn，Mg，Ca）O;硅酸二钙α-2（Ca，Mg，Mn）O中心点SiO_2;陨石3CaO中心点（Mg，Mn）O中心点SiO_2;陨石[2CaO中心点（MgO，MnO，Al_2O_3）中心点2（SiO_2，Al_2O_3）]；硅灰石[（Ca，Mg，Mn）O中心点SiO_2]；透辉石[（CaO，MgO，MnO，Al_2O_3）中心点SiO_2];鳞石英（SiO_2）;菱锰矿[（Mn，Mg，Ca）O中心点SiO_2];钙长石（CaO中心点Al_2O_3中心点2SiO_2）和球铁矿[2（Mn，Mg，Ca）O中心点SiO_2]。液相线温度和主相场与三元体系“ MnO” -CaO-SiO_2中的温度和相场显着不同，但与先前报道的伪三元截面“ MnO”-（CaO + MgO）-（SiO_2 + Al_2O_3）接近。 Al_2O_3 / SiO_2重量比为0.17，MgO / CaO重量比为0.17。使用EPMA测量了CaO，MgO和MnO在液相和固相之间的分配，并表征了一定范围的本体组成和温度下的固溶程度。

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