Influence of Obtaining Conditions on Kinetics of the Initial Sintering Stage of Zirconia Nanopowders | Zendy

Marharyta Lakusta | Zendy; И. А. Даниленко | Zendy; Tetyana Konstantinova | Zendy; Г. К. Волкова | Zendy

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Influence of Obtaining Conditions on Kinetics of the Initial Sintering Stage of Zirconia Nanopowders

Author(s) -

Marharyta Lakusta,

И. А. Даниленко,

Tetyana Konstantinova,

Г. К. Волкова

Publication year - 2016

Publication title -

nanoscale research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.87

H-Index - 107

eISSN - 1931-7573

pISSN - 1556-276X

DOI - 10.1186/s11671-016-1452-3

Subject(s) - sintering , materials science , activation energy , cubic zirconia , diffusion , precipitation , kinetics , grain boundary diffusion coefficient , yttria stabilized zirconia , ceramic , hydrolysis , chemical engineering , grain boundary , metallurgy , composite material , thermodynamics , microstructure , chemistry , physics , quantum mechanics , meteorology , engineering , biochemistry

The present paper is devoted to the problem of sintering ceramics based on yttria-stabilized zirconia (Y-TZP). In this paper, we studied the effect of two obtaining methods (co-precipitation and technical hydrolysis) on sintering kinetics of Y-TZP nanopowders. We used the constant rate of heating (CRH) method at different heating rates for determining the sintering mechanisms. The basic mechanism and activation energy ( Q ) of diffusion at the initial sintering stage were estimated using the sintering rate equations that are applicable to the CRH data. We found that nanopowder 3Y-TZP produced by the co-precipitation method (DIPE) was sintered according to the volume diffusion mechanism ( n = 1/2) and nanopowder TZ-3Y (TOSOH) produced by the technical hydrolysis was sintered according to the grain boundary diffusion mechanism ( n = 1/3).

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