Light scattering models for describing the transmittance of transparent and translucent alumina and zirconia ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43923162" target="_blank" >RIV/60461373:22310/21:43923162 - isvavai.cz</a>

Výsledek na webu

<a href="http://10.1016/j.jeurceramsoc.2020.10.025" target="_blank" >http://10.1016/j.jeurceramsoc.2020.10.025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2020.10.025" target="_blank" >10.1016/j.jeurceramsoc.2020.10.025</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Light scattering models for describing the transmittance of transparent and translucent alumina and zirconia ceramics

Popis výsledku v původním jazyce

The original Apetz-van-Bruggen model for predicting the transmittance of dense polycrystalline ceramics with randomly oriented birefringent crystallites is shown to be incorrect. In a correct Apetz-van-Bruggen equivalent composite model (ECM) the volume fraction must be 1/3 instead of 1/2 and the factor 2/3 in front of the maximum birefringence must be abandoned. This ECM is in good agreement with the simplified version of Pecharroman&apos;s dense polycrystalline model (DPM) and can be improved by replacing the Jobst approximation (i. e. the large-size limit of the Rayleigh-Gans approximation) by the van-de-Hulst approximation. Similarly, a new DPM is proposed that combines the van-de-Hulst approximation with Pecharroman&apos;s texture function. However, all these models fail for small grains. Therefore two new models (infimum-supremum-based ECM and DPM) are proposed, which combine the full Rayleigh-Gans approximation (for small grains) with the van-de-Hulst approximation (for large grains) and provide (for all grain sizes) predictions almost identical to Mie theory.

Název v anglickém jazyce

Light scattering models for describing the transmittance of transparent and translucent alumina and zirconia ceramics

Popis výsledku anglicky

The original Apetz-van-Bruggen model for predicting the transmittance of dense polycrystalline ceramics with randomly oriented birefringent crystallites is shown to be incorrect. In a correct Apetz-van-Bruggen equivalent composite model (ECM) the volume fraction must be 1/3 instead of 1/2 and the factor 2/3 in front of the maximum birefringence must be abandoned. This ECM is in good agreement with the simplified version of Pecharroman&apos;s dense polycrystalline model (DPM) and can be improved by replacing the Jobst approximation (i. e. the large-size limit of the Rayleigh-Gans approximation) by the van-de-Hulst approximation. Similarly, a new DPM is proposed that combines the van-de-Hulst approximation with Pecharroman&apos;s texture function. However, all these models fail for small grains. Therefore two new models (infimum-supremum-based ECM and DPM) are proposed, which combine the full Rayleigh-Gans approximation (for small grains) with the van-de-Hulst approximation (for large grains) and provide (for all grain sizes) predictions almost identical to Mie theory.

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

3

Stát vydavatele periodika

BE - Belgické království

Počet stran výsledku

18

Strana od-do

2058-2075

Kód UT WoS článku

000604584000003

EID výsledku v databázi Scopus

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