Hydrogen diffusivity in sodium aluminosilicate glasses
Hydrogen diffusivity in sodium aluminosilicate glasses
复制标题
铝硅酸钠玻璃中的氢扩散率
DOI:
10.1016/j.jnoncrysol.2019.119502
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发表时间:
2019
影响因子:
3.5
通讯作者:
R. Müller
中科院分区:
文献类型:
--
作者:
T. Welter;U. Marzok;J. Deubener;S. Reinsch;R. Müller
Hydrogen gas diffusivity of fourteen glasses of the Na2O-Al2O3-SiO2system are studied along the joins quartz-albite-jadeite-nepheline (Qz-Ab-Jd-Np, fully polymerized) and albite-sodium disilicate (Ab-Ds, depolymerized). Density measurements show that ionic porosity decreases from 54.4% (Qz) to 51.5% (Np) and from 52.4% (Ab) to 50.2% (Ds). Hydrogen diffusivityDfollows similar trends but at another scale.Dat 523 K decreases from 4 × 10−12to 3 × 10−14m2s−1(Qz-Np) and from 4 × 10−13to 3 × 10−15m2s−1(Ab-Ds). Charge compensating Na+acting as a filling agent in fully polymerized network structures leads to up to one order of magnitude higher diffusivities as depolymerized glass structures of the same SiO2content where Na+takes the role of a modifier ion. Temperature dependence of the diffusivity indicates that both the activation energy involved with the moving H2molecule as well as the accessible volume in the structure contribute to this compositional trend.
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影响因子:
3.2
作者:
J. Shelby
通讯作者:
J. Shelby
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
J. Shelby;R. C. Wayne
通讯作者:
R. C. Wayne
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
J. Deubener;Z. A. Osborne;M. Weinberg
通讯作者:
M. Weinberg
DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
J. Shelby
通讯作者:
J. Shelby
DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
J. Shelby
通讯作者:
J. Shelby