Progress of Research in Negative Thermal Expansion Materials: Paradigm Shift in the Control of Thermal Expansion.
Progress of Research in Negative Thermal Expansion Materials: Paradigm Shift in the Control of Thermal Expansion.
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DOI：
10.3389/fchem.2018.00267
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发表时间：
2018
影响因子：
5.5
通讯作者：
Takenaka K
中科院分区：
文献类型：
--
作者：
Takenaka K
为了满足工业技术发展对热膨胀控制的强烈要求，近十年来各种各样的巨负热膨胀（NTE）材料被开发出来。ZrW2O8中大型各向同性NTE的发现，从其特有的晶体结构来看，极大地推进了NTE的研究，现已被归类为常规NTE。这一类的材料增长迅速。除了传统NTE材料的发展之外，相变型NTE材料也取得了显着进展，该材料采用相变伴随着加热时的体积收缩。这些巨大的NTE材料带来了热膨胀控制的范式转变。本报告对NTE的机制和材料进行了分类和审查，以提出改进其功能和开发新材料的方法。随后的总结介绍了一些与如何将这些巨大的NTE材料用作实际热膨胀补偿器有关的最新活动，并举例说明了含有这些NTE材料的复合材料。
To meet strong demands for the control of thermal expansion necessary because of the advanced development of industrial technology, widely various giant negative thermal expansion (NTE) materials have been developed during the last decade. Discovery of large isotropic NTE in ZrW2O8 has greatly advanced research on NTE deriving from its characteristic crystal structure, which is now classified as conventional NTE. Materials classified in this category have increased rapidly. In addition to development of conventional NTE materials, remarkable progress has been made in phase-transition-type NTE materials using a phase transition accompanied by volume contraction upon heating. These giant NTE materials have brought a paradigm shift in the control of thermal expansion. This report classifies and reviews mechanisms and materials of NTE to suggest means of improving their functionality and of developing new materials. A subsequent summary presents some recent activities related to how these giant NTE materials are used as practical thermal expansion compensators, with some examples of composites containing these NTE materials.
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