Highly ductile amorphous oxide at room temperature and high strain rate

Erkka J. Frankberg, Janne Kalikka, Francisco García Ferré, Lucile Joly-Pottuz, Turkka Salminen, Jouko Hintikka, Mikko Hokka, Siddardha Koneti, Thierry Douillard, Bérangère Le Saint, Patrice Kreiml, Megan J. Cordill, Thierry Epicier, Douglas Stauffer, Matteo Vanazzi, Lucian Roiban, Jaakko Akola, Fabio Di Fonzo, Erkki Levänen, Karine Masenelli-Varlot

Research output: Contribution to journalArticleScientificpeer-review

148 Citations (Scopus)
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Abstract

Oxide glasses are an integral part of the modern world, but their usefulness can be limited by their characteristic brittleness at room temperature. We show that amorphous aluminum oxide can permanently deform without fracture at room temperature and high strain rate by a viscous creep mechanism. These thin-films can reach flow stress at room temperature and can flow plastically up to a total elongation of 100%, provided that the material is dense and free of geometrical flaws. Our study demonstrates a much higher ductility for an amorphous oxide at low temperature than previous observations. This discovery may facilitate the realization of damage-tolerant glass materials that contribute in new ways, with the potential to improve the mechanical resistance and reliability of applications such as electronic devices and batteries.

Original languageEnglish
Pages (from-to)864-869
Number of pages6
JournalScience
Volume366
Issue number6467
DOIs
Publication statusPublished - 15 Nov 2019
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 3

ASJC Scopus subject areas

  • General

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  • Young Researcher award

    Frankberg, E. (Recipient), 8 Jun 2021

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