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Densification and properties of zirconia prepared by three different sintering techniques
- Dahl, P. (author)
- Kaus, I. (author)
-
- Zhao, Zhe, 1973- (author)
- Stockholms universitet,Avdelningen för oorganisk kemi,Department of Physical Inorganic and Structural Chemistry, Stockholm University
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- Wiik, K. (author)
- Grande, T. (author)
- Einarsrud, M. -A (author)
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- (creator_code:org_t)
- Elsevier BV, 2007
- 2007
- English.
- In: Ceramics International. - : Elsevier BV. - 0272-8842 .- 1873-3956. ; 33:8, s. 1603-1610
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Densification of nanocrystalline yttria stabilized zirconia (YSZ) powder with 8 mol% Y2O3, prepared by a glycine/nitrate smoldering combustion method, was investigated by spark plasma sintering, hot pressing and conventional sintering. The spark plasma sintering technique was shown to be superior to the other methods giving dense materials (>= 96%) with uniform morphology at lower temperatures and shorter sintering time. The grain size of the materials was 0.21, 0.37 and 12 mu m after spark plasma sintering, hot pressing and conventional sintering, respectively. Total electrical conductivity of the materials showed no clear correlation with the grain size, but the activation energy for spark plasma sintered materials was slightly higher than for materials prepared by the two other densification methods. The hardness, measured by the Vickers indentation method, was found to be independent on grain size while fracture toughness, derived by the indentation method, was slightly decreasing with increasing grain size.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Keramteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Ceramics (hsv//eng)
Keyword
- grain size
- electrical conductivity
- hardness
- YSZ
- densification
- fracture toughness
- Inorganic chemistry
- Oorganisk kemi
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Dahl, P.
- Kaus, I.
- Zhao, Zhe, 1973-
- Johnsson, Mats
- Nygren, M.
- Wiik, K.
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- Grande, T.
- Einarsrud, M. -A
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- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Chemical Science ...
- and Inorganic Chemis ...
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- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
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- and Ceramics
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- Ceramics Interna ...
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- Stockholm University
- Royal Institute of Technology
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