Fabrication and characterization of zirconia-based composites containing dispersed monazite particles

A. Hirvonen, R. Ramaseshan, T. Kusunose, T. Sekino, K. Niihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The performance and characteristics of ceramic components are considerably influenced by the characteristics of precursor powder used to prepare the materials, The outstanding properties possessed by advanced ceramics are achieved through exceptional composition and microstructure that require careful control throughout the successive stages of the applied processing. The present research aimed originally to obtain and describe the new composite systems in yttrium stabilized tetragonal-zirconia (Y-TZP) combined with monazite (LaPO|*bsub*|4|*esub*|) that possesses very low coefficient of thermal conductivity with maintaining its good mechanical properties. This class of composite might be used for novel high-temperature structural application such as thermal barrier coating and/or mechanical parts. Monazite has been synthesized using wet chemical processing and heat-treatment method. Mixed raw powders have been consolidated by pulse electric current sintering (PECS, also called as SPS) method, which could provide dense materials within a shot sintering time, By using this novel method, reaction between zirconia and monazite was successfully inhibited. Fabrication and sintering characteristics as well as microstructure will be presented in relation to their mechanical and thermal properties.

Original languageEnglish
Title of host publicationDevelopments and Applications of Advanced Engineering Ceramics and Composites - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6
Pages23-31
Number of pages9
Publication statusPublished - 2006
Event6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6 - Maui, HI, United States
Duration: 2005 Sep 112005 Sep 16

Publication series

NameCeramic Transactions
Volume192
ISSN (Print)1042-1122

Other

Other6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6
CountryUnited States
CityMaui, HI
Period05/9/1105/9/16

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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