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The mass transfer process and the growth rate of NaCl crystal growth by evaporation based on temporal phase evaluation
Zhao J; Miao H; Duan L(段俐); Kang Q(康琦); He LH; Miao, H; Univ Sci & Technol China, Dept Modern Mech, Key Lab Mech Behav & Design Mat CAS, Hefei 230027, Anhui, Peoples R China.
Source PublicationOPTICS AND LASERS IN ENGINEERING
2012-04-01
Volume50Issue:4Pages:540-546
ISSN0143-8166
AbstractThe mass transfer process and the crystal growth rate have been proved to be very important in the study of crystal growth kinetics, which influence the crystal quality and morphological stability. In this paper, a new method based on temporal phase evaluation was presented to characterize the mass transfer process in situ and determine the crystal growth rate. The crystallization process of NaCl crystal growth by evaporation was monitored in situ by a Mach-Zehnder interferometer, and the absolute concentration evolution, the evaporation rate and the real-time supersaturation of solution were obtained using temporal phase analysis, which acted as a novel technique to extract phase variation along time axis recently. Based on the evaporation rate and the absolution concentration, a new method to calculate mass transfer flux during the crystal growth without the knowledge of the mass transfer coefficient was proposed, and then the crystal growth rate could also be retrieved under the hypothesis of cubic crystals. The results show that the crystal growth rate increases with the supersaturation linearly. It is in agreement with the diffusion theories, which presume that matter is deposited continuously on a crystal face at a rate proportional to the difference in concentration between the points of deposition and the bulk of solution. The method is applicable to the research of crystallization process based on evaporation or vapor diffusion of which the precise conditions of nucleation and supersaturation are usually unknown because of the complexity of the evaporation rate and crystal growth rate.
KeywordInterferometry Temporal Phase Evaluation Mass Transfer Crystal Growth Rate Vibration Measurement Shift Interferometer Concentration Field Fourier-transform Crystallization Deformation Microscopy Sequence Patterns Kinetics
Subject Area微重力流体力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000300335200006
Funding OrganizationThe authors would like to acknowledge the financial supports provided by the National Science Foundation of China (NSFC) under contract numbers 11072235 and 10732080, and the National Basic Research Program of China under contract number 2007CB936803.
DepartmentNML微重力实验流体力学
Classification二类/Q2
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46564
Collection国家微重力实验室
Corresponding AuthorMiao, H; Univ Sci & Technol China, Dept Modern Mech, Key Lab Mech Behav & Design Mat CAS, Hefei 230027, Anhui, Peoples R China.
Recommended Citation
GB/T 7714
Zhao J,Miao H,Duan L,et al. The mass transfer process and the growth rate of NaCl crystal growth by evaporation based on temporal phase evaluation[J]. OPTICS AND LASERS IN ENGINEERING,2012,50(4):540-546.
APA Zhao J.,Miao H.,段俐.,康琦.,He LH.,...&Univ Sci & Technol China, Dept Modern Mech, Key Lab Mech Behav & Design Mat CAS, Hefei 230027, Anhui, Peoples R China..(2012).The mass transfer process and the growth rate of NaCl crystal growth by evaporation based on temporal phase evaluation.OPTICS AND LASERS IN ENGINEERING,50(4),540-546.
MLA Zhao J,et al."The mass transfer process and the growth rate of NaCl crystal growth by evaporation based on temporal phase evaluation".OPTICS AND LASERS IN ENGINEERING 50.4(2012):540-546.
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