摘要
近年来,利用强磁场的洛伦兹力、磁化力、磁化能和磁极化交互作用等效应开展材料可控制备,获得新的组织结构和性能,已成为材料研究领域的热点问题之一。强磁场不仅可以从宏观上控制材料的物理、化学反应过程,还能影响和调节物质内部的微观状态。同时,强磁场对制备产物的生长过程、最终形貌、排列方式和组织结构等均有重要影响。主要介绍了强磁场在控制化学反应过程、薄膜材料制备、金属凝固过程等方面应用的研究现状,从吉布斯自由能、反应平衡系数、磁化率各向异性、磁畴结构、溶质扩散等角度解释了磁场改变材料组织结构、性能等现象的产生原因,讨论了外加磁场在材料科学领域应用中的研究现状、存在的问题及发展前景。
In recent years, applying Lorentz force, magnetization force, magnetization energy and magnetic polarization interaction of high magnetic fields to obtain new microstructures and properties has become one of hot spots of materials research. The high magnetic field can not only control the physical and chemical reaction process of materials in the macro level, but also affect and regulate the microstructures of materials. The high magnetic field has an important influence on the growth process and the final morphology, microstructure arrangement and phase structure of the prepared products. The research status of high magnetic field on controlling chemical reaction process, preparation of film materials and metal solidification process was mainly introduced. Furthermore, the changes of microstructure and properties were explained from the perspectives of Gibbs free energy, equilibrium coefficient, magnetic susceptibility anisotropy, magnetic domain structure, solute diffusion, and etc. Finally, the research situation, problems and prospects of applying magnetic fields in materials science were discussed in detail.
作者
袁双
刘泽昆
刘家岐
王强
YUAN Shuang;LIU Zekun;LIU Jiaqi;WANG Qiang(School of Metallurgy, Northeastern University, Shenyang 110819, China;Key Laboratory of Material Electromagnetic Process Research, Ministry of Education, Northeastern University, Shenyang 110819, China)
出处
《中国材料进展》
CAS
CSCD
北大核心
2019年第8期759-767,共9页
Materials China
基金
国家自然科学基金资助项目(51425401,51690161,21701022)
辽宁省创新团队项目(LT2017011)
中国科学技术协会青年人才托举工程(2018QNRC001)
中央高校基本科研业务费(N182505037)
关键词
强磁场
化学反应
薄膜材料
合金凝固
high magnetic fields
chemical reaction
film material
alloy solidification
