Highly ductile amorphous oxide at room temperature and high strain rate
Frankberg, Erkka J.; Kalikka, Janne; Ferré, Francisco García; Joly-Pottuz, Lucile; Salminen, Turkka; Hintikka, Jouko; Hokka, Mikko; Koneti, Siddardha; Douillard, Thierry; Le Saint, Bérangère; Kreiml, Patrice; Cordill, Megan J.; Epicier, Thierry; Stauffer, Douglas; Vanazzi, Matteo; Roiban, Lucian; Akola, Jaakko; Fonzo, Fabio Di; Levänen, Erkki; Masenelli-Varlot, Karine (2019-11-15)
Frankberg, Erkka J.
Kalikka, Janne
Ferré, Francisco García
Joly-Pottuz, Lucile
Salminen, Turkka
Hintikka, Jouko
Hokka, Mikko
Koneti, Siddardha
Douillard, Thierry
Le Saint, Bérangère
Kreiml, Patrice
Cordill, Megan J.
Epicier, Thierry
Stauffer, Douglas
Vanazzi, Matteo
Roiban, Lucian
Akola, Jaakko
Fonzo, Fabio Di
Levänen, Erkki
Masenelli-Varlot, Karine
15.11.2019
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202011308319
https://urn.fi/URN:NBN:fi:tuni-202011308319
Kuvaus
Peer reviewed
Tiivistelmä
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.
Kokoelmat
- TUNICRIS-julkaisut [16740]