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Alkali ion diffusio...
Alkali ion diffusion and structure of chemically strengthened TiO2 doped soda-lime silicate glass
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- Bengtsson, F. (författare)
- Uppsala universitet,Institutionen för materialvetenskap
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- Pehlivan, Ilknur Bayrak (författare)
- Uppsala universitet,Institutionen för materialvetenskap
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- Österlund, Lars, 1967- (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Karlsson, Stefan, 1984- (författare)
- RISE,Bygg och fastighet,RISE Res Inst Sweden, Dept Bldg & Real Estate, Built Environm Div, RISE Glass unit, Vejdes plats 3, SE-35252 Växjö, Sweden.
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Journal of Non-Crystalline Solids. - : Elsevier BV. - 0022-3093 .- 1873-4812. ; 586, s. 121564-121564
- Relaterad länk:
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Diffusion kinetics and structural properties of chemically strengthened titania-doped soda-lime silicate glasses were studied by depth-resolved X-ray photoelectron spectroscopy, Raman spectroscopy and spectrophotometry. The glasses were ion exchanged, whereby Na+ in the glass was replaced by K+ in a molten salt bath, at four different treatment temperatures between 350 and 500 °C. The alkali diffusion coefficient, DK-Na, and corresponding activation energy were calculated to be between 3.26×10−12 and 4.47×10−11 cm2s−1 and between 101.1 kJmol−1 and 105.6 kJmol−1, respectively. DK-Na was observed to decrease as the TiO2 concentration was increased. Raman analysis showed Q3-silicate species with different bond lengths, which was attributed to surface compressive stresses, and increasing Si-O-Si bond angle with increasing ion exchange temperature. Ti3+ ions exist as a minor species in the glasses and its concentration depends on the TiO2 content. Deconvolution of the optical absorption spectra reveals Jahn-Teller compressive distortion of the Ti3+ octahedral coordination.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Glass
- Chemically strengthened glass
- ion exchange
- X-ray photoelectron spectroscopy
- Raman spectroscopy
- Interdiffusion coefficient
- Diffusion activation barrier
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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