Probing the chemistry of adhesion between a 316L substrate and spin-on-glass coating

Felix Lampert*, Shima Kadkhodazadeh, Takeshi Kasama, Kristian Vinter Dahl, Alexander Bruun Christiansen, Per Møller

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Hydrogen silsesquioxane ([HSiO3/2]n) based "spin-on-glass" has been deposited on 316L substrate and cured in Ar/H2 gas atmosphere at 600 ºC to form a continuous surface coating with sub-micrometer thickness. The coating functionality depends primarily on the adhesion to the substrate, which is largely affected by the chemical interaction at the interface between the coating and the substrate. We have investigated this interface by transmission electron microscopy and electron energy loss spectroscopy. The analysis identified a 5-10 nm thick interaction zone containing signals from O, Si, Cr and Fe. Analysis of the energy loss near edge structure of the present elements identified predominantly signal from [SiO4]4- units together with Fe2+, Cr2+ and traces of Cr3+. High-resolution transmission electron microscopy images of the interface region confirm a crystalline Fe2SiO4 interfacial region. In agreement with computational thermodynamics, it is proposed that the spin-on-glass forms a chemically bonded silicate-rich interaction zone with the substrate. It was further suggested that this zone is composed of a corundum-type oxide at the substrate surface, followed by an olivine-structure intermediate phase and a spinel-type oxide in the outer regions of the interfacial zone.
Original languageEnglish
JournalLangmuir
Volume34
Issue number10
Pages (from-to)3170-3176
ISSN0743-7463
DOIs
Publication statusPublished - 2018

Cite this

Lampert, Felix ; Kadkhodazadeh, Shima ; Kasama, Takeshi ; Dahl, Kristian Vinter ; Christiansen, Alexander Bruun ; Møller, Per. / Probing the chemistry of adhesion between a 316L substrate and spin-on-glass coating. In: Langmuir. 2018 ; Vol. 34, No. 10. pp. 3170-3176.
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title = "Probing the chemistry of adhesion between a 316L substrate and spin-on-glass coating",
abstract = "Hydrogen silsesquioxane ([HSiO3/2]n) based {"}spin-on-glass{"} has been deposited on 316L substrate and cured in Ar/H2 gas atmosphere at 600 ºC to form a continuous surface coating with sub-micrometer thickness. The coating functionality depends primarily on the adhesion to the substrate, which is largely affected by the chemical interaction at the interface between the coating and the substrate. We have investigated this interface by transmission electron microscopy and electron energy loss spectroscopy. The analysis identified a 5-10 nm thick interaction zone containing signals from O, Si, Cr and Fe. Analysis of the energy loss near edge structure of the present elements identified predominantly signal from [SiO4]4- units together with Fe2+, Cr2+ and traces of Cr3+. High-resolution transmission electron microscopy images of the interface region confirm a crystalline Fe2SiO4 interfacial region. In agreement with computational thermodynamics, it is proposed that the spin-on-glass forms a chemically bonded silicate-rich interaction zone with the substrate. It was further suggested that this zone is composed of a corundum-type oxide at the substrate surface, followed by an olivine-structure intermediate phase and a spinel-type oxide in the outer regions of the interfacial zone.",
author = "Felix Lampert and Shima Kadkhodazadeh and Takeshi Kasama and Dahl, {Kristian Vinter} and Christiansen, {Alexander Bruun} and Per M{\o}ller",
year = "2018",
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Probing the chemistry of adhesion between a 316L substrate and spin-on-glass coating. / Lampert, Felix; Kadkhodazadeh, Shima; Kasama, Takeshi; Dahl, Kristian Vinter; Christiansen, Alexander Bruun; Møller, Per.

In: Langmuir, Vol. 34, No. 10, 2018, p. 3170-3176.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Probing the chemistry of adhesion between a 316L substrate and spin-on-glass coating

AU - Lampert, Felix

AU - Kadkhodazadeh, Shima

AU - Kasama, Takeshi

AU - Dahl, Kristian Vinter

AU - Christiansen, Alexander Bruun

AU - Møller, Per

PY - 2018

Y1 - 2018

N2 - Hydrogen silsesquioxane ([HSiO3/2]n) based "spin-on-glass" has been deposited on 316L substrate and cured in Ar/H2 gas atmosphere at 600 ºC to form a continuous surface coating with sub-micrometer thickness. The coating functionality depends primarily on the adhesion to the substrate, which is largely affected by the chemical interaction at the interface between the coating and the substrate. We have investigated this interface by transmission electron microscopy and electron energy loss spectroscopy. The analysis identified a 5-10 nm thick interaction zone containing signals from O, Si, Cr and Fe. Analysis of the energy loss near edge structure of the present elements identified predominantly signal from [SiO4]4- units together with Fe2+, Cr2+ and traces of Cr3+. High-resolution transmission electron microscopy images of the interface region confirm a crystalline Fe2SiO4 interfacial region. In agreement with computational thermodynamics, it is proposed that the spin-on-glass forms a chemically bonded silicate-rich interaction zone with the substrate. It was further suggested that this zone is composed of a corundum-type oxide at the substrate surface, followed by an olivine-structure intermediate phase and a spinel-type oxide in the outer regions of the interfacial zone.

AB - Hydrogen silsesquioxane ([HSiO3/2]n) based "spin-on-glass" has been deposited on 316L substrate and cured in Ar/H2 gas atmosphere at 600 ºC to form a continuous surface coating with sub-micrometer thickness. The coating functionality depends primarily on the adhesion to the substrate, which is largely affected by the chemical interaction at the interface between the coating and the substrate. We have investigated this interface by transmission electron microscopy and electron energy loss spectroscopy. The analysis identified a 5-10 nm thick interaction zone containing signals from O, Si, Cr and Fe. Analysis of the energy loss near edge structure of the present elements identified predominantly signal from [SiO4]4- units together with Fe2+, Cr2+ and traces of Cr3+. High-resolution transmission electron microscopy images of the interface region confirm a crystalline Fe2SiO4 interfacial region. In agreement with computational thermodynamics, it is proposed that the spin-on-glass forms a chemically bonded silicate-rich interaction zone with the substrate. It was further suggested that this zone is composed of a corundum-type oxide at the substrate surface, followed by an olivine-structure intermediate phase and a spinel-type oxide in the outer regions of the interfacial zone.

U2 - 10.1021/acs.langmuir.7b03131

DO - 10.1021/acs.langmuir.7b03131

M3 - Journal article

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VL - 34

SP - 3170

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JO - Langmuir

JF - Langmuir

SN - 0743-7463

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