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Oxide glasses are one of the most important engineering and functional material families owing to their unique features, such as tailorable physical properties. However, at the same time intrinsic brittleness has been their main drawback, which severely restricts many applications. Despite much progress, a breakthrough in developing ultra-damage-resistant and ductile oxide glasses still needs to be made. Here, a critical advancement toward such oxide glasses is presented. In detail, a bulk oxide glass with a record-high crack resistance is obtained by subjecting a caesium aluminoborate glass to surface aging under humid conditions, enabling it to sustain sharp contact deformations under loads of ≈500 N without forming any strength-limiting cracks. This ultra-high crack resistance exceeds that of the annealed oxide glasses by more than one order of magnitude, making this glass micro-ductile. In addition, a remarkable indentation behavior, i.e., a time-dependent shrinkage of the indent cavity, is demonstrated. Based on structural analyses, a molecular-scale deformation model to account for both the ultra-high crack resistance and the time-dependent shrinkage in the studied glass is proposed.

OriginalsprogEngelsk
Artikelnummer1901281
TidsskriftAdvanced Science
Vol/bind6
Udgave nummer18
Antal sider9
DOI
StatusUdgivet - 2019

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ductility
oxides
glass
cracks
shrinkage
brittleness
indentation
cesium
physical properties
engineering
damage
cavities

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title = "Breaking the Limit of Micro-Ductility in Oxide Glasses",
abstract = "Oxide glasses are one of the most important engineering and functional material families owing to their unique features, such as tailorable physical properties. However, at the same time intrinsic brittleness has been their main drawback, which severely restricts many applications. Despite much progress, a breakthrough in developing ultra-damage-resistant and ductile oxide glasses still needs to be made. Here, a critical advancement toward such oxide glasses is presented. In detail, a bulk oxide glass with a record-high crack resistance is obtained by subjecting a caesium aluminoborate glass to surface aging under humid conditions, enabling it to sustain sharp contact deformations under loads of ≈500 N without forming any strength-limiting cracks. This ultra-high crack resistance exceeds that of the annealed oxide glasses by more than one order of magnitude, making this glass micro-ductile. In addition, a remarkable indentation behavior, i.e., a time-dependent shrinkage of the indent cavity, is demonstrated. Based on structural analyses, a molecular-scale deformation model to account for both the ultra-high crack resistance and the time-dependent shrinkage in the studied glass is proposed.",
keywords = "crack resistance, deformation, glasses, indentation, micro-ductility",
author = "Kacper Januchta and Malwina Stepniewska and Jensen, {Lars Rosgaard} and Yang Zhang and Somers, {Marcel A. J.} and Mathieu Bauchy and Yuanzheng Yue and Smedskj{\ae}r, {Morten Mattrup}",
year = "2019",
doi = "10.1002/advs.201901281",
language = "English",
volume = "6",
journal = "Advanced Science",
issn = "2198-3844",
publisher = "Wiley",
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}

Breaking the Limit of Micro-Ductility in Oxide Glasses. / Januchta, Kacper; Stepniewska, Malwina; Jensen, Lars Rosgaard; Zhang, Yang; Somers, Marcel A. J.; Bauchy, Mathieu; Yue, Yuanzheng; Smedskjær, Morten Mattrup.

I: Advanced Science, Bind 6, Nr. 18, 1901281, 2019.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Breaking the Limit of Micro-Ductility in Oxide Glasses

AU - Januchta, Kacper

AU - Stepniewska, Malwina

AU - Jensen, Lars Rosgaard

AU - Zhang, Yang

AU - Somers, Marcel A. J.

AU - Bauchy, Mathieu

AU - Yue, Yuanzheng

AU - Smedskjær, Morten Mattrup

PY - 2019

Y1 - 2019

N2 - Oxide glasses are one of the most important engineering and functional material families owing to their unique features, such as tailorable physical properties. However, at the same time intrinsic brittleness has been their main drawback, which severely restricts many applications. Despite much progress, a breakthrough in developing ultra-damage-resistant and ductile oxide glasses still needs to be made. Here, a critical advancement toward such oxide glasses is presented. In detail, a bulk oxide glass with a record-high crack resistance is obtained by subjecting a caesium aluminoborate glass to surface aging under humid conditions, enabling it to sustain sharp contact deformations under loads of ≈500 N without forming any strength-limiting cracks. This ultra-high crack resistance exceeds that of the annealed oxide glasses by more than one order of magnitude, making this glass micro-ductile. In addition, a remarkable indentation behavior, i.e., a time-dependent shrinkage of the indent cavity, is demonstrated. Based on structural analyses, a molecular-scale deformation model to account for both the ultra-high crack resistance and the time-dependent shrinkage in the studied glass is proposed.

AB - Oxide glasses are one of the most important engineering and functional material families owing to their unique features, such as tailorable physical properties. However, at the same time intrinsic brittleness has been their main drawback, which severely restricts many applications. Despite much progress, a breakthrough in developing ultra-damage-resistant and ductile oxide glasses still needs to be made. Here, a critical advancement toward such oxide glasses is presented. In detail, a bulk oxide glass with a record-high crack resistance is obtained by subjecting a caesium aluminoborate glass to surface aging under humid conditions, enabling it to sustain sharp contact deformations under loads of ≈500 N without forming any strength-limiting cracks. This ultra-high crack resistance exceeds that of the annealed oxide glasses by more than one order of magnitude, making this glass micro-ductile. In addition, a remarkable indentation behavior, i.e., a time-dependent shrinkage of the indent cavity, is demonstrated. Based on structural analyses, a molecular-scale deformation model to account for both the ultra-high crack resistance and the time-dependent shrinkage in the studied glass is proposed.

KW - crack resistance

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U2 - 10.1002/advs.201901281

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