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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA18-17899S" target="_blank" >GA18-17899S: Částečně a plně slinutá keramika - příprava, mikrostruktura, vlastnosti, modelování a teorie slinování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

—

Svazek periodika

41

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

BE - Belgické království

Počet stran výsledku

6

Strana od-do

4337-4342

Kód UT WoS článku

000632730900004

EID výsledku v databázi Scopus

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