The mechanism of electrochemically induced nucleation in glass melts with the composition 2BaO center dot TiO2 center dot 2.75SiO(2)

Keding R; Russel C

首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >The mechanism of electrochemically induced nucleation in glass melts with the composition 2BaO center dot TiO2 center dot 2.75SiO(2)

【24h】

The mechanism of electrochemically induced nucleation in glass melts with the composition 2BaO center dot TiO2 center dot 2.75SiO(2)

机译：组成2BaO中心点TiO2中心点2.75SiO（2）的玻璃熔体中电化学诱导成核的机理

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

The mechanism of electrochemical nucleation is studied using electrochemical methods and differential thermal analysis. A platinum crucible containing an undercooled melt with the composition 2BaO(.)TiO(2)(.)2.75SiO(2) was contacted with a platinum wire and another platinum wire was inserted into the melt. Then a dc-potential leading to a current flow was attached. At the cathode nucleation and subsequent crystal growth occurred. This is due to the electrochemical reduction of Ti4+ to Ti3+. Assuming Ti4+ and Ti3+ to be incorporated as network formers and modifiers, respectively, this leads to a decrease of the mean number of bridging oxygens per network former. This can be explained by percolation theory which can be used to calculate the undercooling temperature necessary to achieve nucleation directly from the mean number of bridging oxygens per network former. Since for nucleation, a certain Ti3+-concentration is necessary, a certain threshold with respect to the current density is required to achieve nucleation. This threshold increases with increasing temperature. (c) 2005 Elsevier B.V. All rights reserved.

机译：使用电化学方法和差热分析研究了电化学成核机理。将包含过冷熔体且成分为2BaO（.TiO）（2）（。）2.75SiO（2）的铂坩埚与铂丝接触，并将另一根铂丝插入熔体中。然后连接导致电流的直流电势。在阴极成核并随后发生晶体生长。这是由于Ti4 +电化学还原成Ti3 +。假设将Ti4 +和Ti3 +分别作为网络形成剂和改性剂掺入，这会导致每个网络形成剂的平均桥接氧减少。这可以通过渗流理论来解释，该渗流理论可用于直接根据每个网络形成器中桥连氧的平均数来计算实现成核所需的过冷温度。由于成核需要一定的Ti 3+浓度，因此需要相对于电流密度的一定的阈值以实现成核。该阈值随温度升高而增加。（c）2005 Elsevier B.V.保留所有权利。

著录项

来源
《Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites》 |2005年第17期|共6页
作者
Keding R; Russel C;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类晶体学;
关键词
SUBSEQUENT HEAT-TREATMENT; ORIENTED CRYSTALLIZATION; ELECTRIC-FIELD; CERAMICS; ORIENTATION; EXTRUSION;

机译：后续热处理;定向结晶;电磁场;陶瓷;定向;挤压;

相似文献

外文文献
中文文献
专利

1. The mechanism of electrochemically induced nucleation in glass melts with the composition 2BaO center dot TiO2 center dot 2.75SiO(2) [J] . Keding R, Russel C Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites . 2005,第16a17期

机译：组成2BaO中心点TiO2中心点2.75SiO（2）的玻璃熔体中电化学诱导成核的机理
2. Oriented nucleation and crystal growth of Ge-fresnoite (Ba2TiGe2O8) in 2BaO center dot TiO2 center dot 2GeO(2) glasses with additional GeO2 [J] . Wisniewski Wolfgang, Dimitrijevic Jovana, Ruessel Christian CrystEngComm . 2018,第36期

机译：在2Bao中心点TiO2中心点2Geo（2）玻璃中的GE-FRESNOITE（BA2TIGE2O8）的成核和晶体生长含有额外的GEO2
3. CRYSTAL NUCLEATION AND GROWTH IN SODA-LIME-SILICA GLASSES CLOSE TO THE NA2O-CENTER-DOT-2CAO-CENTER-DOT-3SIO(2)(NC2S3) COMPOSITION - CRYSTAL NUCLEATION KINETICS IN THE STOICHIOMETRIC NC2S3 COMPOSITION [J] . Oliver CJRG., James PF. Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems . 1996,第0期

机译：靠近Na2O-CENTER-DOT-2CAO-CENTER-DOT-3SIO（2）（NC2S3）组成的钠钙硅玻璃中的晶体成核和生长-化学计量比NC2S3组成中的晶体成核动力学
4. Comparative investigation of quantum-dot-like localization centers in InGaN quantum well and quantum dot structures [C] . K. Sebald, H. Lohmeyer, J. Gutowski, Symposium on GaN, AIN, InN and Related Materials . 2006

机译：IngaN量子阱和量子点结构中量子点状定位中心的比较研究
5. Mechanisms of electron transfer and hydrogen activation in selected triruthenium clusters with multiple bridging ligands. Part I. The attenuation of radical reactivity in triruthenium trihydrido(alkylidyne) clusters. Electrochemistry and kinetics of decomposition of the 47-electron cluster radical, via a disproportionation path. Part II. The activation of molecular hydrogen at transition metal centers via kinetics and mechanism of reversible oxidative addition of hydrogen across the metal-metal bond of (mu-hydrogen)(2)Ruthenium(3)(Carbon monoxide)(8)(mu-phosphorus(t-BU)(2))(2). [D] . Bierdeman, David John. 2000

机译：具有多个桥联配体的选定三钌簇中电子转移和氢活化的机理。第一部分。三氢三钌（亚烷基）簇中自由基反应性的减弱。通过歧化路径分解47电子簇自由基的电化学和动力学。第二部分通过（mu-hydrogen）（2）钌（3）（一氧化碳）（8）（mu-phosphorus（）的金属-金属键上氢的可逆氧化加成反应的动力学和机理激活过渡金属中心的分子氢t-BU）（2））（2）。
6. Low rate of non-compliance to antituberculous therapy under the banner of directly observed treatment short course (DOTS) strategy and well organized retrieval system: a call for implementation of this strategy at all DOTS centers in Saudi Arabia [O] . Liaqat Ali Chaudhry, Jaffar Al-Tawfiq, Ebtesam Ba-Essa, 2015

机译：在直接观察到的短期治疗（DOTS）策略和组织良好的检索系统的旗帜下抗结核治疗的不合规率低：呼吁在沙特阿拉伯的所有DOTS中心实施该策略
7. 3-Nitrobenzaldehyde isonicotinoylhydrazone monohydrate redetermined at 120 K: sheets built from O-H center dot center dot center dot O, O-H center dot center dot center dot N, N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds [O] . Wardell, Solange M. S. V., Wardell, James L., Low, John N., 2007

机译：在120 K下重新确定3-硝基苯甲醛异烟酰酰yl一水合物：由O-H中心点中心点中心点O，O-H中心点中心点中心点N，N-H中心点中心点中心点O和C-H中心点中心点中心氢键构成的片

The mechanism of electrochemically induced nucleation in glass melts with the composition 2BaO center dot TiO2 center dot 2.75SiO(2)

摘要

著录项

相似文献

相关主题

期刊订阅