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β-石英
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  “β-石英”译为未确定词的双语例句
    The magnesium aluminotianate ( MAT) is precipitated in glass at 850 C, and -quartz solution ( -QSS ), -quartz, -cordierite are precipitated in sequence,-cordierite is precipitated at 950 C.
    镁铝钛酸盐作为初晶相于850℃左右析出,随着温度的升高,玻璃中依次析出β-石英、α-石英、α-堇青石等晶体。 α-堇青石于950℃左右开始析出。
短句来源
    After heat-treatment, the main crystal phase of the glass-ceramic was 3 -quarts solid solution, whose diameter was less than l00nm and volume 30-50%.
    经热处理后,微品玻璃的主晶相为β-石英固溶体,其晶粒直径小于100nm,体积份数为30~50%。
短句来源
    The result shows that, as far as the two-stage heating treatment, the crystalline phase of glass-ceramics with TiO2is same as that of the glass-ceramics with P2Os, the main crystals are -quartz S.S, which contributed to the lower thermal expansion coefficient of these glass-ceramics;
    结果表明:在两步法实验中,以TiO_2为晶核剂的微晶玻璃和以P_2O_5为晶核剂的微晶玻璃所析出的晶相是一样的,都是β-石英固溶体,使试样热膨胀系数比基础玻璃大大降低。
短句来源
    First, we research on the connection of MgO and ZnO-doping content with the glass ceramic's microstructure, mechanical performance and thermal expenditure. The results demonstrate that MgO and ZnO doping make the temperature of melt felled obviously.
    通过实验及对微晶玻璃微观结构的分析以及性能测试,结果表明:MgO和ZnO具有良好的助熔效果,主晶相都为β-石英固溶体,晶粒尺寸都在100nm左右。
短句来源
    And the results demonstrate that transformation temperature and crystal temperature are smaller when the rate of TiO2/ZrO2 is 1. The temperature that P-quartz solid solution is transformed into p-spodumene solid solution is increased to 910℃.
    结果表明:ZiO_2和ZrO_2晶核剂含量相同时,使得微晶玻璃的转变温度和析晶温度都有所降低。 并且β-石英固溶体向β-锂辉石固溶体转变的温度上升至910℃。
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  -quartz
Migration Paths of Helium in α-Quartz and Vitreous Silica from Molecular Dynamics Data
      
The helium diffusion in α-quartz and vitreous silica is studied by the molecular dynamics method.
      
The helium diffusion in α-quartz and vitreous silica is described.
      
Empirical relationships describing the composition dependences of the chemical durability of glasses in the diopside-albite, diopside-anorthite, diopside-orthoclase, diopside-quartz, and diopside-feldspar systems are derived.
      
A detailed examination of the experimental and model ARDFs has revealed that the interatomic distances for all atoms belonging to one helical chain in the glass are identical to those in the β-quartz crystal over the entire ordering range.
      
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  -quartz
Migration Paths of Helium in α-Quartz and Vitreous Silica from Molecular Dynamics Data
      
The helium diffusion in α-quartz and vitreous silica is studied by the molecular dynamics method.
      
The helium diffusion in α-quartz and vitreous silica is described.
      
Empirical relationships describing the composition dependences of the chemical durability of glasses in the diopside-albite, diopside-anorthite, diopside-orthoclase, diopside-quartz, and diopside-feldspar systems are derived.
      
A detailed examination of the experimental and model ARDFs has revealed that the interatomic distances for all atoms belonging to one helical chain in the glass are identical to those in the β-quartz crystal over the entire ordering range.
      
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TEM,DTA, X-ray diffraction results reveal that there is a strong tendency of phaseseparation in the ZnO-Al_2O_3-SiO_2 (ZAS) glass.β-quartz solid solution would be crystal-lized out as metastable initial crystalline phase when the degree of phase separation ofthe original glass is low.Whereas β-quartz solid solution and β-willemite solid solutionwould both be crystallized out when the degree of phase separation is more perfect.Itwas found that the degree of phase separation not only determines the initial crystallinephase,...

TEM,DTA, X-ray diffraction results reveal that there is a strong tendency of phaseseparation in the ZnO-Al_2O_3-SiO_2 (ZAS) glass.β-quartz solid solution would be crystal-lized out as metastable initial crystalline phase when the degree of phase separation ofthe original glass is low.Whereas β-quartz solid solution and β-willemite solid solutionwould both be crystallized out when the degree of phase separation is more perfect.Itwas found that the degree of phase separation not only determines the initial crystallinephase, but also accelerates the crystallization of the ZAS glass.

透射电镜、差热分析以及X射线衍射分析的研究结果表明,ZnO-Al_2O_3-SiO_2(ZAS)玻璃具有较强的分相倾向。当原始玻璃的分相程度较低时,在晶化时析出的亚稳初晶相为β石英固溶体;若分相程度较完善,则析出的初晶相为β石英固溶体和β硅锌矿固溶体。同时从实验结果得出:分相不仅会改变初晶相类型,而且会加速ZAS玻璃的析晶。

Three main techniques-transmission electron microscopy, X-ray diffraction and infrared spectroscopy have been employed to investigate the microstrueture and the crystallizing behavior of transparent Li2-MgO-Al2O3-SiO2 glass ceramics doped with iron(<2wt.% Fe2O3), TiO2; ZrO3 and P3O5 were added as nucleating agents.A series of β-quartz and β-eueryptite solid solutions were synthesized; comparison tests were made between the solid solutions and the mechanical mixtures having the same mineralcompositions.The formation...

Three main techniques-transmission electron microscopy, X-ray diffraction and infrared spectroscopy have been employed to investigate the microstrueture and the crystallizing behavior of transparent Li2-MgO-Al2O3-SiO2 glass ceramics doped with iron(<2wt.% Fe2O3), TiO2; ZrO3 and P3O5 were added as nucleating agents.A series of β-quartz and β-eueryptite solid solutions were synthesized; comparison tests were made between the solid solutions and the mechanical mixtures having the same mineralcompositions.The formation of lithium-aluminium-silicate solid solutions and the coincidental ion substitutions in the glass ceramic system have been discussed; and the effects of iron substitution on the crystallizing process have been studied.

用透射电镜、X射线衍射和红外光谱分析研究了掺铁(Fe_2O_3<2重量%)的Li_2O-MgO-Al_2O_3-SiO_2系透明微晶玻璃的显微结构和晶化行为。系统中引入TiO_2、ZrO_2和P_2O_5作为复合晶核剂。 人工合成了一系列β-石英β-锂辉石固溶体,和相应矿物组成的机械混合物进行了对比测定。 讨论了该微晶玻璃系统锂铝硅酸盐固溶体的形成以及同时发生的离子置换;探讨了铁离子置换对于晶化过程的影响。

Moessbauer speetroscopy has been used to investigate aspects of the optical absorption of the Fe2O3-doped transparent glass-ceramic in the Li2O-MgO-Al2O3-SiO2 system.The relationship between moessbauer parameters (Isomer Shift I. S. and Quadrupole Splitting Q. S.) and optical absorption spectra has been analysed. The results clearly indicate that the employed variables-Fe2O3 concentrations (0-10 wt%) and crystallization time (0-100 hours) are directly responsible for the variation in the valence, coordination...

Moessbauer speetroscopy has been used to investigate aspects of the optical absorption of the Fe2O3-doped transparent glass-ceramic in the Li2O-MgO-Al2O3-SiO2 system.The relationship between moessbauer parameters (Isomer Shift I. S. and Quadrupole Splitting Q. S.) and optical absorption spectra has been analysed. The results clearly indicate that the employed variables-Fe2O3 concentrations (0-10 wt%) and crystallization time (0-100 hours) are directly responsible for the variation in the valence, coordination states, and the symmetry of the electrical environment of iron in the dominant crystallized β-quartz solid solution.

用穆斯堡尔谱(Moessbauer Spectroscopy)研究了掺铁Li_2O-MgO-Al_2O_3-SiO_2系统微晶玻璃的光吸收。分析了穆斯堡尔谱(MB)的两个主要参数——同质异能位移(Isomer Shift)和四极分裂(Quadrupole Splitting)与光吸收的关系。结果指出,铁离子浓度(0~10重量%)和晶化时间(0~100小时)对铁在主晶相β-石英固溶体中的价态、配位状态和最邻近电子环境的不对称程度有直接的影响。

 
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