Light scattering and absorption by inclusions in transparent spinel ceramics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916952" target="_blank" >RIV/60461373:22310/18:43916952 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Light scattering and absorption by inclusions in transparent spinel ceramics
Original language description
The optical properties of transparent ceramics are generally affected by inclusions. When the indices of refraction of matrix and inclusions are not close to each other, the in-line transmittance can drop dramatically. In particular, empty or gas-filled pores are typical inclusions in all ceramics and cause a major decrease of the in-line transmittance. Low porosity in ceramics may be achieved by ECAS method (Electric Current Assisted Sintering), also known as SPS (Spark Plasma Sintering). However, carbon inclusions, caused by the usage of graphite molds in this method, decrease the transmittance as well. The aim of this work is to compare the effects of several factors on the in-line transmittance of transparent spinel (MgAl2O4) ceramics: concentration, size, composition and absorption of inclusions, and the wavelength of incident light. With this background knowledge the effort in the development of new transparent spinel ceramics via ECAS method may be even more focused. The impact on in-line transmittance of these absorbing (graphite and amorphous carbon) and non-absorbing (pore) inclusions in spinel matrix has been thoroughly investigated via Mie scattering theory for multiple wavelengths of incident light, inclusion diameters and concentrations. Furthermore the influence of the distribution of inclusion size has been discussed. It is found that some general trends exist and they are linked to the absolute value of the difference between the indices of refraction of inclusions and matrix.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
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)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the Workshop for Young Ceramicists “Promoting Your Research Results”
ISBN
978-88-7586-599-3
ISSN
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e-ISSN
neuvedeno
Number of pages
4
Pages from-to
107-110
Publisher name
Editrice La Mandragora
Place of publication
Imola
Event location
Bologna
Event date
Nov 26, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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