Grain growth suppression in alumina via doping and two-step sintering
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F15%3APU117781" target="_blank" >RIV/00216305:26620/15:PU117781 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ceramint.2015.05.162" target="_blank" >http://dx.doi.org/10.1016/j.ceramint.2015.05.162</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2015.05.162" target="_blank" >10.1016/j.ceramint.2015.05.162</a>
Alternative languages
Result language
angličtina
Original language name
Grain growth suppression in alumina via doping and two-step sintering
Original language description
Efficiency of two-step sintering on grain growth elimination in the final stage of sintering of polycrystalline alumina has long been considered questionable. The published works failed either to suppress the grain growth entirely or to achieve the relative densities above 99% where the grain growth is the most severe. This paper reports on successful grain growth elimination in the final stage of sintering of a sub-micron alumina ceramics by a combination of the two-stage sintering and doping with metal oxides (MgO, ZrO2 or Y2O3). Relative densities up to 99.7% were achieved. Neither doping of aluminas sintered under conventional conditions nor the two-step sintering of pure alumina alone resulted in entire grain growth suppression in the final stage of sintering. A combination of the two-step heating regime with suitable doping (500 ppm MgO added as MgAl2O4 nanopowder) led to complete grain growth suppression at relative densities above 99%.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ceramics International
ISSN
0272-8842
e-ISSN
1873-3956
Volume of the periodical
41
Issue of the periodical within the volume
9
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
11975-11983
UT code for WoS article
000359165300051
EID of the result in the Scopus database
2-s2.0-84931028111