Improved microstructure of alumina ceramics prepared from DBD plasma activated powders

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00107189" target="_blank" >RIV/00216224:14310/19:00107189 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/19:PU129932

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0955221918306873" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0955221918306873</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2018.11.022" target="_blank" >10.1016/j.jeurceramsoc.2018.11.022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Improved microstructure of alumina ceramics prepared from DBD plasma activated powders

Popis výsledku v původním jazyce

Submicron Al2O3 powders were activated by Diffuse Coplanar Surface Barrier Discharge (DCSBD) plasma. The influence of the plasma treatment on the powder properties and their impact on the microstructure of dry and wet shaped ceramics were investigated. Raman and FTIR analyses of treated powders showed a substantial increase of the powder’s surface hydroxylation, surface cleaning, and the presence of adsorbed NOx originating from the DCSBD. Sintering of the dry shaped plasma treated powders did not influence sintering behavior. On the other hand, the plasma treated powder was able to form stable water suspension without any chemical stabilization aid. Slip cast samples exhibited finer pore size distribution, a higher sinterability, and a finer final microstructure. The grain size of slip casted plasma treated powder was reduced by a factor of 1.7, which facilitated a grain size of 0.68 um at the relative density of 99.54 % t.d. obtained by pressure-less sintering.

Název v anglickém jazyce

Improved microstructure of alumina ceramics prepared from DBD plasma activated powders

Popis výsledku anglicky

Submicron Al2O3 powders were activated by Diffuse Coplanar Surface Barrier Discharge (DCSBD) plasma. The influence of the plasma treatment on the powder properties and their impact on the microstructure of dry and wet shaped ceramics were investigated. Raman and FTIR analyses of treated powders showed a substantial increase of the powder’s surface hydroxylation, surface cleaning, and the presence of adsorbed NOx originating from the DCSBD. Sintering of the dry shaped plasma treated powders did not influence sintering behavior. On the other hand, the plasma treated powder was able to form stable water suspension without any chemical stabilization aid. Slip cast samples exhibited finer pore size distribution, a higher sinterability, and a finer final microstructure. The grain size of slip casted plasma treated powder was reduced by a factor of 1.7, which facilitated a grain size of 0.68 um at the relative density of 99.54 % t.d. obtained by pressure-less sintering.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2019

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

1873-619X

Svazek periodika

39

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

1297-1303

Kód UT WoS článku

000457819600076

EID výsledku v databázi Scopus

2-s2.0-85057026741