Takenaka K. Negative thermal expansion materials: technological key for control of thermal expansion.
Sci Technol Adv Mater 2012;
13:013001. [PMID:
27877465 PMCID:
PMC5090290 DOI:
10.1088/1468-6996/13/1/013001]
[Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 02/02/2012] [Accepted: 11/04/2011] [Indexed: 05/12/2023]
Abstract
Most materials expand upon heating. However, although rare, some materials contract upon heating. Such negative thermal expansion (NTE) materials have enormous industrial merit because they can control the thermal expansion of materials. Recent progress in materials research enables us to obtain materials exhibiting negative coefficients of linear thermal expansion over -30 ppm K-1. Such giant NTE is opening a new phase of control of thermal expansion in composites. Specifically examining practical aspects, this review briefly summarizes materials and mechanisms of NTE as well as composites containing NTE materials, based mainly on activities of the last decade.
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