DC-electro softening in soda lime silicate glass: an electro-thermal analysis

Lorenzo Pinter; Mattia Biesuz; Vincenzo M. Sglavo; Theo Saunders; Jon Binner; Mike Reece; Salvatore Grasso

doi:10.1016/j.scriptamat.2018.03.028

DC-electro softening in soda lime silicate glass: an electro-thermal analysis

Lorenzo Pinter, Mattia Biesuz^*, Vincenzo M. Sglavo, Theo Saunders, Jon Binner, Mike Reece, Salvatore Grasso

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

DC-electric field-induced softening was investigated in soda lime glass. The application of a DC current causes a migration of Na ions towards the cathode resulting in the formation of a sodium depleted layer close to the anode where a localized voltage drop ignites electrical arcs through the glass. This effect is strongly asymmetric with respect to the applied DC polarity and, at the anode, it induces strong photoemission (optical transition of alkali elements) sharp rise in temperature and increased electrical resistance. It appears that electrolytic effects and sodium migration play a fundamental role as triggering mechanisms of DC-electric field-induced softening.

Original language	English
Pages (from-to)	14-18
Number of pages	5
Journal	Scripta Materialia
Volume	151
Early online date	30 Mar 2018
DOIs	https://doi.org/10.1016/j.scriptamat.2018.03.028
Publication status	Published - 1 Jul 2018

Keywords

DC conductivity
Electric field-induced softening
Flash sintering
Soda lime silicate glass
Softening

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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https://www.sciencedirect.com/science/article/pii/S1359646218301805Licence: None: All rights reserved

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title = "DC-electro softening in soda lime silicate glass: an electro-thermal analysis",

abstract = "DC-electric field-induced softening was investigated in soda lime glass. The application of a DC current causes a migration of Na ions towards the cathode resulting in the formation of a sodium depleted layer close to the anode where a localized voltage drop ignites electrical arcs through the glass. This effect is strongly asymmetric with respect to the applied DC polarity and, at the anode, it induces strong photoemission (optical transition of alkali elements) sharp rise in temperature and increased electrical resistance. It appears that electrolytic effects and sodium migration play a fundamental role as triggering mechanisms of DC-electric field-induced softening.",

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T2 - an electro-thermal analysis

AU - Pinter, Lorenzo

AU - Biesuz, Mattia

AU - Sglavo, Vincenzo M.

AU - Saunders, Theo

AU - Binner, Jon

AU - Reece, Mike

AU - Grasso, Salvatore

PY - 2018/7/1

Y1 - 2018/7/1

N2 - DC-electric field-induced softening was investigated in soda lime glass. The application of a DC current causes a migration of Na ions towards the cathode resulting in the formation of a sodium depleted layer close to the anode where a localized voltage drop ignites electrical arcs through the glass. This effect is strongly asymmetric with respect to the applied DC polarity and, at the anode, it induces strong photoemission (optical transition of alkali elements) sharp rise in temperature and increased electrical resistance. It appears that electrolytic effects and sodium migration play a fundamental role as triggering mechanisms of DC-electric field-induced softening.

AB - DC-electric field-induced softening was investigated in soda lime glass. The application of a DC current causes a migration of Na ions towards the cathode resulting in the formation of a sodium depleted layer close to the anode where a localized voltage drop ignites electrical arcs through the glass. This effect is strongly asymmetric with respect to the applied DC polarity and, at the anode, it induces strong photoemission (optical transition of alkali elements) sharp rise in temperature and increased electrical resistance. It appears that electrolytic effects and sodium migration play a fundamental role as triggering mechanisms of DC-electric field-induced softening.

KW - DC conductivity

KW - Electric field-induced softening

KW - Flash sintering

KW - Soda lime silicate glass

KW - Softening

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EP - 18

JO - Scripta Materialia

JF - Scripta Materialia

ER -

DC-electro softening in soda lime silicate glass: an electro-thermal analysis

Abstract

Keywords

ASJC Scopus subject areas

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