The Influence of Manganese Oxide on the Sintering Behavior of Yttria Tetragonal Zirconia

Journal Article · Mon Jan 17 04:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3552456· OSTI ID:21510174

Meenaloshini, S; Amiriyan, M; Sankar, U; Tolouei, R; Ramesh, S ^[1]

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1. Ceramics Technology Laboratory, University Tenaga Nasional, 43009 Kajang Selangor (Malaysia)

The sintering behavior of yttria-stabilized zirconia, with the influence of small additions of MnO{sub 2}(up to 1 wt %) sintered over the temperature range from 1250 deg. C to 1500 deg. C was investigated. It was found that the mechanical properties of Y-TZP were dependent on the dopant amount and sintering temperature. The results revealed that relative densities above 97.5% of theoretical (i.e. >5.95 Mgm{sup -3}) could be obtained in Y-TZPs sintered at low temperatures, 1250 deg. C and 1300 deg. C, with the additions of {<=}0.3 wt% MnO{sub 2}. In comparison to the undoped samples, the additions of up to 1 wt%MnO{sub 2} and for sintering up to 1350 deg. C was found to be beneficial in enhancing the Vickers hardness of the ceramic. The fracture toughness of Y-TZP however, was found to increase only in the 1 wt% MnO{sub 2}-doped samples when sintered above 1400 deg. C. The relation between the measured mechanical properties is discussed with the emphasis on the role of the manganese oxide.

• OSTI ID: 21510174
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1315; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
CHALCOGENIDES
COHERENT SCATTERING
COMPARATIVE EVALUATIONS
DENSITY
DIFFRACTION
DOPED MATERIALS
EVALUATION
FABRICATION
FRACTURE PROPERTIES
GRANULAR MATERIALS
MANGANESE COMPOUNDS
MANGANESE OXIDES
MATERIALS
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SINTERING
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENT COMPOUNDS
VICKERS HARDNESS
X-RAY DIFFRACTION
YOUNG MODULUS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES