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Microwave‐Sintered MgO‐Doped Zirconia with Improved Mechanical and Tribological Properties
Author(s) -
Nath Shekhar,
Bajaj Sunny,
Basu Bikramjit
Publication year - 2008
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2008.02201.x
Subject(s) - materials science , cubic zirconia , sintering , fracture toughness , tribology , microstructure , annealing (glass) , composite material , doping , friction coefficient , ceramic , metallurgy , optoelectronics
This paper reports the results of microwave sintering (without post‐sintering annealing) on the microstructure, phase assemblage, and properties of 8 mol% (PSZ—partially stabilized zirconia), and 16 mol% (FSZ—fully stabilized zirconia) MgO‐alloyed zirconia. For the PSZ samples sintered at 1585°C, a maximum densification of ∼98%ρ th , along with a hardness of ∼10.6 GPa and a fracture toughness of ∼6.8 MPa·m 1/2 , was obtained. The results of tribological experiments on some selected samples revealed that a good combination of a lower coefficient of friction of 0.35 and a wear rate of 10 −7 mm 3 /N m can be obtained with the optimally sintered Mg‐PSZ.