Influence of rare earths on the sintering of zirconia-yttria



Document title: Influence of rare earths on the sintering of zirconia-yttria
Journal: Materials research
Database: PERIÓDICA
System number: 000312410
ISSN: 1516-1439
Authors: 1


2
Institutions: 1Universidade Federal de Sao Carlos, Departamento de Engenharia de Materiais, Sao Carlos, Sao Paulo. Brasil
2Universidade de Sao Paulo, Instituto de Fisica, Sao Carlos, Sao Paulo. Brasil
Year:
Season: Jul
Volumen: 2
Number: 3
Pages: 211-217
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental
English abstract Yttria stabilized zirconia sintered by silicate glass phase with addition of ytterbium or gadolinium was investigated. The grain growth rate was found to be higher in the gadolinium doped samples. The glass phase of the ytterbium doped sample showed partial crystallization on cooling. Grain conductivity was found to be highest in samples with a half hour of sintering, having decreased due to stabilizing ion migration from the grains to the grain boundary glassy phase. The differences observed in the sintering behavior and properties of the sintered bodies are attributed to the different ionic radii of the Yb+3 and Gd+3 ions
Disciplines: Ingeniería
Keyword: Ingeniería de control,
Ingeniería de materiales,
Cristalización,
Conductividad eléctrica
Keyword: Engineering,
Control engineering,
Materials engineering,
Crystallization,
Electrical conductivity
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