cristobalite

1. Effect of Heat Treatment Parameters on Cristobalite Content in Li_2O-ZnO-SiO_2 Glass-ceramics
   热处理参数对锂锌硅系微晶玻璃中方石英相含量的影响
2. Montmorillonite, quartz and cristobalite can be corroded by sodium hydroxide solution, but will introduce new impurity phase similar to zeolite.
   氢氧化钠溶蚀法会对蒙脱石、石英和方石英同时产生溶蚀，引入新的物相杂质。
3. The notes describe the common minerals such as quartz and its polymorphs, coesite, tridymite and cristobalite, feldspar, plagioclase, feldspathoids, pyroxenes, amphiboles, etc.
   讲稿详细地介绍了火成岩矿物，如：石英及它的同构异形体、柯石英、鳞石英、方石英、长石、斜长石、似长石、辉石、闪石等矿物。
4. Effects of Cristobalite Content of Silica Base Ceramics Core on the Rate of Qualified Pouring
   硅基陶瓷型芯方石英含量与叶片浇注不露芯率的关系
5. Crystal structure and morphology of α cristobalite in silica bricks
   硅砖中α-方石英的晶体结构与形貌
6. DISCUSSION ON METASTABLE FORMATION MECHANISM OF CRISTOBALITE 1 Preparation of tridymite and cristobalite from α-quartz was studied.
   方石英的亚稳态形成机制探讨本文介绍了一种从α-石英制取鳞石英和方石英的疗法和条件。
7. Effect of Cristobalite Content on properties in silicon carbide material bound with oxide
   方石英含量对氧化物结合SiC材料性能的影响
8. The results showed that along with the increasing oxygen content for enrichment, the contents of glassy and aphanitic silicates decrease continuously with expanded pore size and increasing porosity in eroded silica brick and high-alumina brick in which the contents of mullite and cristobalite increase as well.
   高铝砖中莫来石和方石英的含量不断升高，玻璃质硅酸盐和隐晶质铝硅酸盐的含量则不断下降，气孔孔径扩大，气孔率不断升高；
9. The inducing effect of sodium makes amorphous silica transferred to α cristobalite during calcination, and the specific surface area decreases enormously as a consequence.
   结果表明，Na的诱导作用使无定型氧化硅在焙烧过程中相变为α-方石英结构，同时伴有比表面积的大幅度下降；
10. A study on the cristobalite of the high quartz porcelain body
    高石英瓷坯中方石英的研究
11. Starting from ( 1100 ℃), a part of non-crystal SiO_2-segregated meta-kaolinite reacted with Al_2O_3-γ to form mullite, the rest crystallized as cristobalite;
    1100℃开始，由偏高岭石分凝形成的非晶质SiO2一部分和Al2O3-γ发生反应生成了莫来石，一部分结晶为方英石；
12. The main crystalline of this system is not identified, while the accompanied crystalline is α-cristobalite.
    析晶中主晶相类别尚未查清，次晶相确定为α－方石英。
13. Key to study of α-cristobalite durable China
    α-方石英强化日用瓷研制过程中几个关键问题分析
14. The Development of α-cristobalite Reinforced Porcelain
    α&方石英强化瓷的研制
15. Furthermore, when temperature approaching 1 300 ℃, amorphous SiO_2 was crystallized into cristobalite.
    1300℃时，不定形SiO2进一步结晶形成方石英。
16. The experiment result shows that the transition temperature of high-. quartz porcelain is about 1100 ℃ to 1300 ℃ and with the increase in temperature, the flew phase formed is Mullite ( 3Al2O3 '2SiO2) and Cristobalite ( SiO2).
    实验表明高石英质瓷的相变温度在1100℃到1300℃，并且随着温度的升高形成了新的物相莫来石（3Al2O3·2SiO2）和方石英（SiO2）。
17. Vibrational spectrum of β cristobalite and phase transition of cristobalite
    β方石英的振动光谱和方石英的相变
18. All of the fundamental frequencies and the normal modes of the transverse optical vibration of α cristobalite have been calculated on the basis of the valence force field model and the published data on Raman and infrared spectra of α cristobalite.
    在价力场模型和已公布的α方石英喇曼光谱和红外光谱不完全的观测数据基础上，计算了α方石英振动光谱横模的全部基频和简正模式。
19. After heating to 1000 ℃, X-ray powder diffraction will show characteristic lines due to mullite and cristobalite.
    在叶蜡石加热到1000℃后的X射线粉晶衍射谱图上，出现了莫来石和方英石的特征谱线。
20. As a consequence a good set of the six valence force constants for β cristobalite is given.
    由此提供了一组甚好的β方石英的力常数。
21. Effect of Cristobalite Content on the Properties of Ceramic Core in Making Directionally Solidified Hollow Blade
    影响定向空心叶片陶瓷型芯性能的一个重要因素&方石英含量的控制
22. All of the fundamental frequencies and the normal modes of the transverse optical vibration of β cristobalite have been calculated on the basis of the valence force field model.
    利用价力场模型计算了β方石英振动光谱横模的全部基频和简正模式。
23. Preparation of Cristobalite by Direct Calcination with Nubby Quartz
    石英块料直接煅烧法生产方石英
24. The results show that with the increasing temperature magnesium aluminotitanate ( MAT), β-quartz solid solution ( β-QSS), sapphirine, spinel, α-cordierite, α-quartz, cristobalite, enstatite are precipitated in glass in sequence.
    结果表明：随温度升高，玻璃中依次析出镁铝钛酸盐、β-石英固溶体、假蓝宝石、尖晶石、α-堇青石、α-石英、方石英、顽辉石等晶体。
25. XRD analysis showed that both of the main phases in the samples of series B are a-SiC, andalusite, mullite and cristobalite before and after thermal shock.
    相组成分析表明，B2配方样品热震前后的主晶相均为a-SiC、红柱石、莫来石和方石英。
26. The montmorillonite containing impurities which is difficult to remove such as cristobalite was purified. The purification effectiveness of traditional centrifugal purification method and alkali extraction purification method were compared.
    本文研究了含有方英石等难去除杂质蒙脱土的提纯，比较了传统湿法提纯与碱提取法提纯效果的差别。

noun

1. a white mineral consisting of silica