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Terahertz probing o...
Terahertz probing of low-temperature degradation in zirconia bioceramics
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Ahmed, Shafique (författare)
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Zhang, Man (författare)
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Koval, Vladimir (författare)
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Zou, Lifong (författare)
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- Shen, Zhijian James (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Chen, Riqing (författare)
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Yang, Bin (författare)
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Yan, Haixue (författare)
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(creator_code:org_t)
- 2021-09-30
- 2022
- Engelska.
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Ingår i: Journal of The American Ceramic Society. - : Wiley. - 0002-7820 .- 1551-2916. ; 105:2, s. 1106-1115
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- ZrO2-based ceramics are widely used in biomedical applications due to its color, biocompatibility, and excellent mechanical properties. However, low-temperature degradation (LTD) introduces a potential risk for long-term reliability of these materials. The development of innovative nondestructive techniques, which can explore LTD in zirconia-derived compounds, is strongly required. Yttria stabilized zirconia, 3Y-TZP, is one of the well-developed ZrO2-based ceramics with improved resistance to LTD for dental crown and implant applications. Here, 3Y-TZP ceramic powders were pressed and sintered to study the LTD phenomenon by phase transition behavior. The LTD-driven tetragonal-to-monoclinic phase transition was confirmed by XRD. XPS analysis demonstrated that induced LTD reduced the oxygen vacancies which supports these findings. It is proved that after the degradation, the 3Y-TZP ceramics show the decreased dielectric permittivity at terahertz frequencies due to the crystallographic phase transformation. Terahertz nondestructive probe is a promising method to investigate LTD in zirconia ceramics.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- 3Y-TZP
- dielectric properties
- low-temperature degradation
- phase transition
- THz radiation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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