Surface roughness improvement of near net shaped alumina by EPD

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00532868" target="_blank" >RIV/68081723:_____/20:00532868 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/20:PU136475

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s41779-019-00390-y" target="_blank" >https://link.springer.com/article/10.1007/s41779-019-00390-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s41779-019-00390-y" target="_blank" >10.1007/s41779-019-00390-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Surface roughness improvement of near net shaped alumina by EPD

Popis výsledku v původním jazyce

The high surface roughness of thick and dense alumina deposits prepared by long-term electrophoretic deposition (EPD) caused by surface inhomogeneities could be eliminated by changing the suspension composition or EPD parameters. This work is aimed at the influence of the suspension composition, more precisely on the increase of electrical conductivity through indifferent electrolyte (lithium chloride) addition and its effect on the surface roughness. At first, the electrical conductivity was adjusted by the various amounts of the stabilisers of mono-, di- and trichloroacetic acid in the range of 0.85–21.25 wt%. It was demonstrated that deposits prepared from these suspensions were several millimetres thick, dense with a relatively low surface roughness (Ra ≈ 10 μm) only when the electrical conductivity was higher than 4 μS/cm. If a portion of the stabiliser was replaced with indifferent electrolyte, it resulted in the significantly smoother surface with a roughness Ra ≈ 2 μm preserving all other benefits. Suggested optimization represents a useful novel approach for the preparation of dense, thick and near net-shaped alumina deposits with low surface roughness via EPD.

Název v anglickém jazyce

Surface roughness improvement of near net shaped alumina by EPD

Popis výsledku anglicky

The high surface roughness of thick and dense alumina deposits prepared by long-term electrophoretic deposition (EPD) caused by surface inhomogeneities could be eliminated by changing the suspension composition or EPD parameters. This work is aimed at the influence of the suspension composition, more precisely on the increase of electrical conductivity through indifferent electrolyte (lithium chloride) addition and its effect on the surface roughness. At first, the electrical conductivity was adjusted by the various amounts of the stabilisers of mono-, di- and trichloroacetic acid in the range of 0.85–21.25 wt%. It was demonstrated that deposits prepared from these suspensions were several millimetres thick, dense with a relatively low surface roughness (Ra ≈ 10 μm) only when the electrical conductivity was higher than 4 μS/cm. If a portion of the stabiliser was replaced with indifferent electrolyte, it resulted in the significantly smoother surface with a roughness Ra ≈ 2 μm preserving all other benefits. Suggested optimization represents a useful novel approach for the preparation of dense, thick and near net-shaped alumina deposits with low surface roughness via EPD.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of the Australian Ceramic Society

ISSN

2510-1560

e-ISSN

—

Svazek periodika

56

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

721-727

Kód UT WoS článku

000532990000036

EID výsledku v databázi Scopus

2-s2.0-85068834384