Microwave, Spark Plasma and Conventional Sintering to Obtain Controlled Thermal Expansion β-Eucryptite Materials

Lithium aluminosilicate was fabricated by conventional and nonconventional sintering: microwave and spark plasma sintering, from 1200 to 1300°C. A considerable difference in densification, microstructure, coefficient of thermal expansion behavior and hardness and Young's modulus was observed. M...

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Published inInternational journal of applied ceramic technology Vol. 12; no. S2; pp. E187 - E193
Main Authors Benavente, Rut, Salvador, María D., García-Moreno, Olga, Peñaranda-Foix, Felipe L., Catalá-Civera, Jose M., Borrell, Amparo
Format Journal Article
LanguageEnglish
Published Blackwell Publishing Ltd 01.05.2015
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Summary:Lithium aluminosilicate was fabricated by conventional and nonconventional sintering: microwave and spark plasma sintering, from 1200 to 1300°C. A considerable difference in densification, microstructure, coefficient of thermal expansion behavior and hardness and Young's modulus was observed. Microwave technology made possible to obtain fully dense glass‐free lithium aluminosilicate bulk material (>99%) with near‐zero and controlled coefficient of thermal expansion and relatively high mechanical properties (7.1 GPa of hardness and 110 GPa of Young's modulus) compared with the other two processes. It is believed that the heating mode and effective particle packing by microwave sintering are responsible to improve these properties.
Bibliography:ark:/67375/WNG-S323R5JD-C
ERDF (European Regional Development Funds)
Spanish government - No. TEC2012-37532-C02-01
UPV - No. SP20120621; No. SP20120677
SCSIE of the University of Valencia
Spanish Ministry of Science and Innovation - No. JCI-2011-10498
istex:7D77017CF00232E19954F2EA359B16ECFC3AFDE8
ArticleID:IJAC12285
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.12285