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

Tutkimustuotos: ArtikkeliScientificvertaisarvioitu

35 Sitaatiot (Scopus)
24 Lataukset (Pure)

Abstrakti

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.

AlkuperäiskieliEnglanti
Sivut864-869
Sivumäärä6
JulkaisuScience
Vuosikerta366
Numero6467
DOI - pysyväislinkit
TilaJulkaistu - 15 marrask. 2019
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Julkaisufoorumi-taso

  • Jufo-taso 3

!!ASJC Scopus subject areas

  • General

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