Sodium sulfate heptahydrate I: The growth of single crystals

被引：38

作者：

Derluyn, Hannelore ^{[2
,3
]}

Saidov, Tamerlan A. ^{[1
]}

Espinosa-Marzal, Rosa M. ^{[4
,5
]}

Pel, Leo ^{[1
]}

Scherer, George W. ^{[4
]}

机构：

[1] TU Eindhoven, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands

[2] ETH, Chair Bldg Phys, CH-8093 Zurich, Switzerland

[3] EMPA, Swiss Fed Labs Mat Sci & Technol, Lab Bldg Sci & Technol, CH-8600 Dubendorf, Switzerland

[4] Princeton Univ, Princeton, NJ 08544 USA

[5] ETH, Dept Mat, CH-8093 Zurich, Switzerland

来源：

JOURNAL OF CRYSTAL GROWTH | 2011年 / 329卷 / 01期

关键词：

Growth models; Supersaturated solutions; Growth from solutions; Natural crystal growth; Salts; POROUS MATERIALS; SALT; CRYSTALLIZATION; KINETICS; NA2SO4-H2O; NMR;

D O I：

10.1016/j.jcrysgro.2011.06.024

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Sodium sulfate is one of the most damaging salts for porous building materials. In our quest to increase the durability of civil structures and cultural heritage we need to understand its crystallization behavior. In this paper we investigate the cooling-induced growth of the metastable heptahydrate crystal phase by combining nuclear magnetic resonance, for non-destructive measurement of the concentration, with time-lapse microscopy, to visualize the crystal growth. The growth rate is found to be controlled by interface attachment kinetics. The kinetic growth parameter G(k) ranges from 0.001 to 0.007 mm/s for single crystals in a temperature range of 4.8-13 degrees C. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：44 / 51

页数：8

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