Influence of acid-treated talc and Na2CO3 flux on mineralogical phase composition and porosity in steatite ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10236289" target="_blank" >RIV/61989100:27360/17:10236289 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/17:10236289 RIV/61989100:27740/17:10236289

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1111/ijac.12683/abstract" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/ijac.12683/abstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ijac.12683" target="_blank" >10.1111/ijac.12683</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of acid-treated talc and Na2CO3 flux on mineralogical phase composition and porosity in steatite ceramics

Popis výsledku v původním jazyce

The work aimed with the effect of preceramic mixtures containing natural talc (Tc) or acid-treated talc (Tc-ac) supplemente d by montmorillonite (Mt) or kaolinite (Ka), and the flux Na2CO3 on the mineral phase composition, porosity and pore size distribution in the steatite ceramics prepared using solid state sintering at 1300°C. The samples were analyzed using X-ray diffraction and porometry techniques and scanning electron microscopy. Application of Mt or Ka in preceramic mixtures with provided compa rable results. The acidification of talc using hydrochloric acid resulted in partial release of Mg2+ from the structure. The ratio of SiO2:MgO in Tc was 35:65 (wt%) and 70:30 (wt%) in Tc-ac. Tc, clay minerals, and flux Na2CO3 in the MgO–Al2O3–SiO2–Na2O glass system resulted to the separation of forsterite and protoenstatite, while Tc-ac provided crystallization of protoenstatite at the expense of clinoenstatite in highly porous ceramics. The pre-ceramic mixtures were precursors of bimodal pore size distribution at preparedsteatite ceramics.

Název v anglickém jazyce

Influence of acid-treated talc and Na2CO3 flux on mineralogical phase composition and porosity in steatite ceramics

Popis výsledku anglicky

The work aimed with the effect of preceramic mixtures containing natural talc (Tc) or acid-treated talc (Tc-ac) supplemente d by montmorillonite (Mt) or kaolinite (Ka), and the flux Na2CO3 on the mineral phase composition, porosity and pore size distribution in the steatite ceramics prepared using solid state sintering at 1300°C. The samples were analyzed using X-ray diffraction and porometry techniques and scanning electron microscopy. Application of Mt or Ka in preceramic mixtures with provided compa rable results. The acidification of talc using hydrochloric acid resulted in partial release of Mg2+ from the structure. The ratio of SiO2:MgO in Tc was 35:65 (wt%) and 70:30 (wt%) in Tc-ac. Tc, clay minerals, and flux Na2CO3 in the MgO–Al2O3–SiO2–Na2O glass system resulted to the separation of forsterite and protoenstatite, while Tc-ac provided crystallization of protoenstatite at the expense of clinoenstatite in highly porous ceramics. The pre-ceramic mixtures were precursors of bimodal pore size distribution at preparedsteatite ceramics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/LO1203" target="_blank" >LO1203: Regionální materiálově technologické výzkumné centrum - Program udržitelnosti</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

International Journal of Applied Ceramic Technology

ISSN

1546-542X

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

803-809

Kód UT WoS článku

000404887200032

EID výsledku v databázi Scopus

2-s2.0-85017442364