Theoretical study of the influence of carbon contamination on the transparency of spinel ceramics prepared by spark plasma sintering (SPS)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43923176" target="_blank" >RIV/60461373:22310/21:43923176 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.jeurceramsoc.2021.01.036" target="_blank" >https://doi.org/10.1016/j.jeurceramsoc.2021.01.036</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2021.01.036" target="_blank" >10.1016/j.jeurceramsoc.2021.01.036</a>

Result language
angličtina
Original language name
Theoretical study of the influence of carbon contamination on the transparency of spinel ceramics prepared by spark plasma sintering (SPS)
Original language description
Carbon contamination due to the use of graphite dies, punches and paper is a major challenge in the preparation of transparent ceramics via spark plasma sintering (SPS), but also the elimination of residual porosity is an issue. In this paper, the effect of carbon contamination, alone or in combination with residual porosity, on the transmittance of spinel (MgAl2O4) ceramics is investigated via Mie theory as a function of inclusion/pore size, concentration (volume fraction) and wavelength of light. It is found that there is a critical size of carbon inclusions (around 100 nm), nearly constant with wavelength, above which the transmittance increases with increasing inclusion size to its theoretical limit. However, if the inclusions are smaller than that, the transmittance remains low and nearly constant with decreasing size of inclusions. Carbon contamination accompanied with porosity results in a combination of the typical trends and features caused by carbon inclusions and pores.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics

Project
<a href="/en/project/GA18-17899S" target="_blank" >GA18-17899S: Partially and fully sintered ceramics – processing, microstructure, properties, modeling and sintering theory</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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