Transformation toughening of a calcium zirconate matrix by dicalcium silicate, under ballistic impact

W. M. Kriven, B. R. Rosczyk, K. Kremeyer, B. Song, W. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Preliminary investigations have been made on toughening ceramic armor materials by inducing large volume change phase transformations in ceramics. Such transformations cannot be induced by a normal, slow crack growth mechanism such as occurs in zirconia, but requires an exceedingly high activation energy barrier to be overcome. We have developed a procedure for evaluating mechanical behavior under both quasi-static and dynamic loading conditions. The failure modes under quasi-static loading conditions were observed to be non- catastrophic. Preliminary results suggest that dicalcium silicate (Ca2SiO4) dispersed in a calcium zirconate (CaZrO3) matrix material increases the toughness of the material. It is thought that the energy of ballistic impact is able to overcome the prohibitively, high activation energy barrier to nucleate the orthorhombic to monoclinic transformation in Ca2SiO4 which is accompanied by an ∼12% volume increase at 490°C.

Original languageEnglish (US)
Title of host publicationCeramic Engineering and Science Proceedings
PublisherAmerican Ceramic Society
Pages383-388
Number of pages6
Edition3
ISBN (Print)9781119040439
DOIs
StatePublished - 2003
EventCeramic Engineering And Science Proceedings: 27th International Cocoa Beach Conference on Advanced Ceramics and Composites:A - Cocoa Beach, FL, United States
Duration: Jan 26 2003Jan 31 2003

Publication series

NameCeramic Engineering and Science Proceedings
Number3
Volume24
ISSN (Print)0196-6219

Conference

ConferenceCeramic Engineering And Science Proceedings: 27th International Cocoa Beach Conference on Advanced Ceramics and Composites:A
CountryUnited States
CityCocoa Beach, FL
Period1/26/031/31/03

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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  • Cite this

    Kriven, W. M., Rosczyk, B. R., Kremeyer, K., Song, B., & Chen, W. (2003). Transformation toughening of a calcium zirconate matrix by dicalcium silicate, under ballistic impact. In Ceramic Engineering and Science Proceedings (3 ed., pp. 383-388). (Ceramic Engineering and Science Proceedings; Vol. 24, No. 3). American Ceramic Society. https://doi.org/10.1002/9780470294802.ch56