中国物理B ›› 2016, Vol. 25 ›› Issue (12): 128202-128202.doi: 10.1088/1674-1056/25/12/128202

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Can secondary nucleation exist in ice banding of freezing colloidal suspensions?

Jia-Xue You(游家学), Jin-Cheng Wang(王锦程), Li-Lin Wang(王理林), Zhi-Jun Wang(王志军), Jun-Jie Li(李俊杰), Xin Lin(林鑫)   

  1. 1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China;
    2. School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
  • 收稿日期:2016-05-23 修回日期:2016-08-17 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: Zhi-Jun Wang, Xin Lin E-mail:zhjwang@nwpu.edu.cn;xlin@nwpu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51371151 and 51571165), the Free Research Fund of State Key Laboratory of Solidification Processing, China (Grant No. 100-QP-2014), the Fund of State Key Laboratory of Solidification Processing in Northwestern Polytechnical University (NWPU), China (Grant No. 13-BZ-2014), and the Fundamental Research Funds for the Central Universities, China (Grant No. 3102015ZY020).

Can secondary nucleation exist in ice banding of freezing colloidal suspensions?

Jia-Xue You(游家学)1, Jin-Cheng Wang(王锦程)1, Li-Lin Wang(王理林)2, Zhi-Jun Wang(王志军)1, Jun-Jie Li(李俊杰)1, Xin Lin(林鑫)1   

  1. 1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China;
    2. School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
  • Received:2016-05-23 Revised:2016-08-17 Online:2016-12-05 Published:2016-12-05
  • Contact: Zhi-Jun Wang, Xin Lin E-mail:zhjwang@nwpu.edu.cn;xlin@nwpu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51371151 and 51571165), the Free Research Fund of State Key Laboratory of Solidification Processing, China (Grant No. 100-QP-2014), the Fund of State Key Laboratory of Solidification Processing in Northwestern Polytechnical University (NWPU), China (Grant No. 13-BZ-2014), and the Fundamental Research Funds for the Central Universities, China (Grant No. 3102015ZY020).

摘要:

The formation mechanism of ice banding in the system of freezing colloidal suspensions, which is of significance in frost heaving, ice-templating porous materials and biological materials, is still a mystery. Recently, the theory of secondary nucleation and growth of ice has been proposed to explain the emergence of a new ice lens. However, this theory has not been quantitatively examined. Here, we quantitatively measure the initial interfacial undercooling of a new ice lens and the nucleation undercoolings of suspensions. We find that the interfacial undercooling cannot satisfy the nucleation undercooling of ice and hence disprove the secondary nucleation mechanism for ice banding.

关键词: colloidal suspensions, freezing, nucleation, ice banding

Abstract:

The formation mechanism of ice banding in the system of freezing colloidal suspensions, which is of significance in frost heaving, ice-templating porous materials and biological materials, is still a mystery. Recently, the theory of secondary nucleation and growth of ice has been proposed to explain the emergence of a new ice lens. However, this theory has not been quantitatively examined. Here, we quantitatively measure the initial interfacial undercooling of a new ice lens and the nucleation undercoolings of suspensions. We find that the interfacial undercooling cannot satisfy the nucleation undercooling of ice and hence disprove the secondary nucleation mechanism for ice banding.

Key words: colloidal suspensions, freezing, nucleation, ice banding

中图分类号:  (Colloids)

  • 82.70.Dd
81.30.Fb (Solidification) 47.20.Hw (Morphological instability; phase changes) 02.60.Cb (Numerical simulation; solution of equations)