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Sliding-wear resistance of ultrafine-grained SiC densified by spark plasma sintering with 3Y(2)O(3)+5Al(2)O(3) or Y3Al5O12 additives
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2013 (English)In: Scripta Materialia, ISSN 1359-6462, E-ISSN 1872-8456, Vol. 69, no 8, 598-601 p.Article in journal (Refereed) Published
Abstract [en]

The sliding-wear behavior of ultrafine-grained SiC densified by spark plasma sintering (SPS) with 3Y(2)O(3) + 5Al(2)O(3) or Y3Al5O12 additives was compared to elucidate the effect of the intergranular-phase source. Significantly greater sliding-wear resistance (i.e. lower mild- and severe-wear rates, and delayed mild-to-severe wear transition) is observed with the Y3Al5O12 additive, due to its carbothermal reduction during SPS resulting in a harder YAlO3 phase while reducing the intergranular phase content. Implications for the processing of superior SiC triboceramics are discussed.

Place, publisher, year, edition, pages
2013. Vol. 69, no 8, 598-601 p.
Keyword [en]
SiC, Sliding wear, Spark plasma sintering, Ultrafine-grained ceramics
National Category
Chemical Sciences
URN: urn:nbn:se:su:diva-94856DOI: 10.1016/j.scriptamat.2013.07.007ISI: 000324456000009OAI: diva2:656908


Available from: 2013-10-17 Created: 2013-10-16 Last updated: 2013-10-17Bibliographically approved

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Nygren, Mats
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Department of Materials and Environmental Chemistry (MMK)
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