Effect of Electrophoretic Deposition Conditions on Final Properties of Alumina and Zirconia Deposits

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F09%3APU86178" target="_blank" >RIV/00216305:26210/09:PU86178 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Electrophoretic Deposition Conditions on Final Properties of Alumina and Zirconia Deposits

Popis výsledku v původním jazyce

The electrophoretic deposition of alumina and zirconia powders from the isopropanolic suspension in the presence of monochloracetic acid was studied in the constant-current regime. The new method of deposition kinetics control, based on the direct weightmeasurement was developed enabling exact control of deposit weight. The different levels of electric current during deposition from 250 microA to 48 mA were used. The green density of deposit depends on the current density and then on the particle velocity during deposition and achieved thevalue from 58% to 61%, according to the electric current used. The lower green density of the deposit was, the larger pores were found in the deposit. The low green density led to low final fired density and subsequently to low Vickers hardness, changing from 2000 HV5 to 1650 HV5, depending on electric current used. Adopting these findings, the microlaminate consisting of alternating 75 layers of alumina and 75 layers of zirconia was prepared.

Název v anglickém jazyce

Effect of Electrophoretic Deposition Conditions on Final Properties of Alumina and Zirconia Deposits

Popis výsledku anglicky

The electrophoretic deposition of alumina and zirconia powders from the isopropanolic suspension in the presence of monochloracetic acid was studied in the constant-current regime. The new method of deposition kinetics control, based on the direct weightmeasurement was developed enabling exact control of deposit weight. The different levels of electric current during deposition from 250 microA to 48 mA were used. The green density of deposit depends on the current density and then on the particle velocity during deposition and achieved thevalue from 58% to 61%, according to the electric current used. The lower green density of the deposit was, the larger pores were found in the deposit. The low green density led to low final fired density and subsequently to low Vickers hardness, changing from 2000 HV5 to 1650 HV5, depending on electric current used. Adopting these findings, the microlaminate consisting of alternating 75 layers of alumina and 75 layers of zirconia was prepared.

Druh

O - Ostatní výsledky

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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