Surface Modification of Mullite by Partial Infiltration of Zirconia

Surface Modification of Mullite by Partial Infiltration of Zirconia

A fabrication technique for surface incorporation of ZrO2 was developed. Prefired mullite bodies with open porosities of 20-40% were infiltrated with a ZrOCl2 solution prior to firing. Mechanical properties of the surface modified mullite were improved. The flexural strength of the composite increas...

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Veröffentlicht in:Journal of the Ceramic Society of Japan 1990/01/01, Vol.98(1133), pp.49-55
Hauptverfasser: ASAUMI, Junji, YOSHIDA, Hideto, MIYATA, Noboru, KAMIAKA, Hideto, YAMAGISHI, Chitake
Format: Artikel
Sprache:eng ; jpn
Schlagworte:
Infiltration
Mullite
Surface modification
Zirconia
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Beschreibung
Zusammenfassung:A fabrication technique for surface incorporation of ZrO2 was developed. Prefired mullite bodies with open porosities of 20-40% were infiltrated with a ZrOCl2 solution prior to firing. Mechanical properties of the surface modified mullite were improved. The flexural strength of the composite increased by 35-40% of that of mullite at room temperature, and had the same value at 1300°C as that of mullite. The fracture toughness of the surface layer of the composite was double of that of mullite.
ISSN:0914-5400
1882-1022
DOI:10.2109/jcersj.98.49