High pressure sintered ZrO2-6%wt REO | Zendy

Carlos Kuranaga | Zendy; Guerold S. Bobrovnitchii | Zendy

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High pressure sintered ZrO2-6%wt REO

Author(s) -

Carlos Kuranaga,

Guerold S. Bobrovnitchii

Publication year - 2007

Publication title -

science of sintering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.309

H-Index - 25

eISSN - 1820-7413

pISSN - 0350-820X

DOI - 10.2298/sos0701017k

Subject(s) - sintering , materials science , tetragonal crystal system , fracture toughness , phase (matter) , oxide , high pressure , volume (thermodynamics) , toughness , metallurgy , composite material , mineralogy , chemistry , thermodynamics , organic chemistry , physics

The sintering conditions employed in this work are innovative, due to the use of an alternative technology to process ZrO2-REO (rare earth oxide mixture), so called high temperature - high pressure (HPHT). A pressure of 5GPa was used, temperatures of 1100, 1200, and 1300 o C, for times of 2 and 5 minutes. The best results were obtained for samples sintered at 5GPa/1300 o C/5min., where a micro-hardness of 4.8GPa, fracture toughness of 5.3MPa.m ½, density of 97.9%, and 88% in volume of a tetragonal phase retained at room temperature were achieved

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