Crack propagation in layered Al2O3/ZrO2 composites prepared by electrophoretic deposition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F07%3APU64715" target="_blank" >RIV/00216305:26210/07:PU64715 - 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

Crack propagation in layered Al2O3/ZrO2 composites prepared by electrophoretic deposition

Popis výsledku v původním jazyce

Crack propagation through layered Al2O3/ZrO2 composites was studied. The specimens were prepared via electrophoretic deposition of alumina and zirconia powders from suspensions with monochloroacetic acid and isopropanol. The kinetics of electrophoretic deposition could be described fully if the electrophoretic mobility and conductivity of suspensions were known. The conductivity of suspensions increased in the course of deposition. Adjusting to properly controlled kinetics of deposition and sintering, deposits were prepared with strongly bonded layers of different pre-defined thicknesses and, consequently, with different magnitudes of residual stress. Cracks, produced by an indentation technique, propagated askew towards layer interfaces deflected towards the interface in the Al2O3 layers and away from the interface in the ZrO2 layers. Changes in the direction of crack propagation were described for the whole range of angles of incidence (0 - 90deg). The biggest change in the crack pro

Název v anglickém jazyce

Crack propagation in layered Al2O3/ZrO2 composites prepared by electrophoretic deposition

Popis výsledku anglicky

Crack propagation through layered Al2O3/ZrO2 composites was studied. The specimens were prepared via electrophoretic deposition of alumina and zirconia powders from suspensions with monochloroacetic acid and isopropanol. The kinetics of electrophoretic deposition could be described fully if the electrophoretic mobility and conductivity of suspensions were known. The conductivity of suspensions increased in the course of deposition. Adjusting to properly controlled kinetics of deposition and sintering, deposits were prepared with strongly bonded layers of different pre-defined thicknesses and, consequently, with different magnitudes of residual stress. Cracks, produced by an indentation technique, propagated askew towards layer interfaces deflected towards the interface in the Al2O3 layers and away from the interface in the ZrO2 layers. Changes in the direction of crack propagation were described for the whole range of angles of incidence (0 - 90deg). The biggest change in the crack pro

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

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

2007

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Science

ISSN

0022-2461

e-ISSN

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Svazek periodika

42

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

000247934600070

EID výsledku v databázi Scopus

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