Viscosity of melts in the NaAlSiO4-KAlSiO4-SiO2 system: Configurational entropy modelling

Viscosity of melts in the NaAlSiO4-KAlSiO4-SiO2 system: Configurational entropy modelling
复制标题

NaAlSiO4-KAlSiO4-SiO2 体系中熔体的粘度:构型熵建模

DOI:
10.1016/j.jnoncrysol.2019.119635
复制
发表时间:
2019
影响因子:
3.5
通讯作者:
Whittington, Alan G.
Whittington, Alan G.
中科院分区:
材料科学2区
文献类型:
--
作者:
Robert, Geneviève;Smith, Rebecca A.;Whittington, Alan G.

文献摘要

参考文献

被引文献

相似文献

在SiO_2-(Na,K)AlSiO_4体系中,我们提供了霞石-钾硅岩和翡翠-白榴石两种岩系的新粘度数据。提出了熔体粘度随Na/(Na + K)和Al/(Al + Si)比值变化的组态熵模型。我们的模型表明:i)粘度数据被非理想的对称形式的参数Sconf(Tg)和Be很好地再现,ii)基于Sconf(Tg)和Be参数对Al/(Al + Si)比的有限依赖性,Na-K混合是体系中附加熵的主要来源,iii)作为Al/(Al + Si)比的函数而变化。随着Al/(Al- + -Si)比的增加,体系熔体脆性增大,且Na或K端元熔体的脆性大于混合熔体。在SiO_2-(Na,K)AlSiO_4体系中,名义上完全聚合的熔体的粘度可以通过化学混合来模拟,而不需要明确考虑与K/(Na + K)和Al/(Al + Si)比变化相关的重要的结构变化。
We provide new viscosity data in the system SiO2-(Na,K)AlSiO4, for the nepheline-kalsilite and jadeite-leucite joins. We present a configurational entropy model for the viscosity of melts in the system as a function of Na/(Na + K) and Al/(Al + Si) ratios. Our modelling indicates that: i) Viscosity data are reproduced well by a non-ideal, symmetrical form of the parametersSconf(Tg) andBe, ii) Na-K mixing is the main source of additional entropy in the system based on the limited dependence ofSconf(Tg) andBeparameters on Al/(Al + Si) ratio, iii)Aelikely varies as a function of Al/(Al + Si) ratio. Melt fragility in the system increases with increasing Al/(Al + Si) ratio and is greater for Na or K end-member melts than mixed melts. The viscosity of nominally fully-polymerized melts in the SiO2-(Na,K)AlSiO4system can be modelled through chemical mixing, without explicit consideration of the important changes in structure related to changes in K/(Na + K) and Al/(Al + Si) ratios.
碱金属钛硅酸盐熔体的热容、粘度和构型熵
DOI: --
发表时间: 1999
期刊:
影响因子: --
作者:
M. Bouhifd;A. Sipp;P. Richet
通讯作者: P. Richet
沿 SiO2-NaAlSiO4 连接处熔体的粘度、脆性和构型熵
DOI: --
发表时间: 1997
期刊:
影响因子: --
作者:
M. Toplis;Donald Bruce Dingwell;K. Hess;T. Lenci
通讯作者: T. Lenci
DOI: 10.1016/0009-2541(87)90062-3
发表时间: 1987-04-01
期刊: CHEMICAL GEOLOGY
影响因子: 3.9
作者:
RICHET, P
通讯作者: RICHET, P
2 kbar 下单晶花岗岩组合物在硅铝酸盐熔体中的水溶解度
DOI: --
发表时间: 1992
期刊:
影响因子: --
作者:
F. Holtz;H. Behrens;Donald Bruce Dingwell;R. Taylor
通讯作者: R. Taylor
DOI: --
发表时间: 2015
期刊:
影响因子: --
作者:
Amy G. Ryan;J. Russell;A. Nichols;K. Hess;L. Porritt
通讯作者: L. Porritt