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Fracto-Emission from Ceramics at Cryogenic Temperatures

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Fracture Mechanics of Ceramics

Part of the book series: Fracture Mechanics of Ceramics ((FMOC,volume 10))

Abstract

Electron emissions from fine ceramics of alumina during the fracture process (fracto-emission, FE) at cryogenic temperatures were observed and compared with those from brittle metals, glass and single crystals of SiO2 etc. The features of FEs are intended to be classified in metals and insulators, and moreover, the latter are into single and poly-crystals, and non-crystalline (glassy state). However, the FEs from alumina ceramics of polycrystalline are very similar to those from sodium silicate glass and pure fused silica, but are different from those from synthetic quartz (single crystal) especially for fracture at room temperature. From experimental results, it is supposed that they depend on the fracture modes, fracture strength and electronic properties for generation of free electrons and its compensation on fracture surfaces of these materials. These problems are discussed here.

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Author information

Authors and Affiliations

  1. ISIR, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567, Japan

    Shigehiro Owaki & Toichi Okada

  2. Dept. Mechanical Engineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka, 564, Japan

    Sumio Nakahara & Kiyoshi Sugihara

Authors
  1. Shigehiro Owaki
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  2. Toichi Okada
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  3. Sumio Nakahara
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  4. Kiyoshi Sugihara
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Editor information

Editors and Affiliations

  1. University of Nevada-Reno, Reno, Nevada, USA

    R. C. Bradt

  2. Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA

    D. P. H. Hasselman

  3. University of Karlsruhe, Karlsruhe, Germany

    D. Munz

  4. Toyohashi University of Technology, Toyohashi, Japan

    M. Sakai

  5. High Tech Ceramics Scientific Research Centre, Moscow, Russia, CIS

    V. Ya. Shevchenko

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© 1992 Springer Science+Business Media New York

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Owaki, S., Okada, T., Nakahara, S., Sugihara, K. (1992). Fracto-Emission from Ceramics at Cryogenic Temperatures. In: Bradt, R.C., Hasselman, D.P.H., Munz, D., Sakai, M., Shevchenko, V.Y. (eds) Fracture Mechanics of Ceramics. Fracture Mechanics of Ceramics, vol 10. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3348-1_2

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  • DOI: https://doi.org/10.1007/978-1-4615-3348-1_2

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-6476-4

  • Online ISBN: 978-1-4615-3348-1

  • eBook Packages: Springer Book Archive

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