A second ceramic age - a new materials frontier

Subbarao, E. C. (1991) A second ceramic age - a new materials frontier Bulletin of Materials Science, 14 (5). pp. 1171-1182. ISSN 0250-4707

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Official URL: http://www.ias.ac.in/j_archive/bms/14/5/1171-1182/...

Related URL: http://dx.doi.org/10.1007/BF02744610


A second ceramic age started in the mid-twentieth century as a new, exciting materials frontier. Electroceramics with phenomenally wide range of electrical resistivity (spread over 30 orders of magnitude) span insulators, semiconductors, metal-like conductors, ionic conductors, and, recently, superconductors. They also include ferroelectrics, piezoelectrics, pyroelectrics and electro-optics beside ferrites. Advances in electroceramics have been fascinating and rapid, leading to unprecedented rates of industrial growth. Age-old limitations of poor mechanical strength and brittleness of ceramics are being overcome by outstanding toughness and strength achieved in zirconia-based ceramics exploiting the martensitic transformation at the tetragonal-monoclinic phase change. The dimensional changes at this transition which prevented the use of zirconia earlier has now been turned into a mechanism for toughening ceramics to significant levels. Ceramics with near-zero overall thermal expansion coefficient offer new opportunities to science and industry.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Second Ceramic Age; Materials Frontier; Electroceramics; Ferroelectrics; Ceramic Electrolytes; Martensitic Transformation of Zirconia; Low Expansion Ceramics
ID Code:50490
Deposited On:25 Jul 2011 11:06
Last Modified:18 May 2016 04:46

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