Low-temperature sintering and prolonged holding time on the densification and properties of zirconia ceramic

C.H. Ting; S. Ramesh; C.Y. Tan; N.I. Zainal Abidin; W.D. Teng; I. Urriés; L.T. Bang

doi:http://dx.doi.org/

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자료유형: 학술저널

저자정보: C.H. Ting (University of Malaya) S. Ramesh (University of Malaya) C.Y. Tan (University of Malaya) N.I. Zainal Abidin (University of Malaya) W.D. Teng (SIRIM Berhad) I. Urriés (Universidad de Zaragoza) L.T. Bang (Kyushu University)

저널정보: 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제18권 제8호

발행연도: 2017.8

수록면: 569 - 574 (6page)

DOI: http://dx.doi.org/

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In the present work, the effect of low temperature sintering, focusing on varying the sintering holding times on the mechanicalproperties, microstructure and low temperature degradation behavior of undoped and MnO2-doped Y-TZP ceramics wereinvestigated. Green samples were sintered at temperatures ranging from 1100 to 1250 oC at varying holding times rangingfrom 12 min. to 480 min. The sintered bodies were characterized in terms of bulk density, Vickers hardness, fracturetoughness, phase stability and grain size. The results indicated that the relative density of above 95%, Vickers hardness of 14GPa and fracture toughness of 5 MPam1/2 were obtained when sintered at lower sintering temperature (below 1250 oC) andlonger sintering times for MnO2-doped Y-TZP samples. Grain growth was marginal and the average grain size of all samplesranged between 0.14 and 0.28 μm. The results indicated that the grain growth kinetics was influenced mainly by the sinteringtemperature and not by the sintering holding time. The addition of MnO2 was found to be beneficial in enhancing densificationand mechanical properties of Y-TZP particularly at low sintering temperature of 1100 oC and low holding time of 12 min. Thelow-temperature degradation experiment conducted in superheated steam indicated that all the samples did not transformedto the monoclinic symmetry, attributed mainly to the lower grain size sintered at relatively low sintering temperatures

#Low temperature sintering #prolonged holding times #Y-TZP #Mechanical properties #Low temperature degradation.

참고문헌 (46)

참고문헌 신청

R.H. Hannink / 2000 / J. Am. Ceram. Soc 83:461~487

S. Lawson / 1995 / J. Eur. Ceram. Soc 15:485~502

M. Cattani-Lorente / 2011 / Acta Biomater 7:858~865

M. Yoshimura / 1987 / J. Mater. Sci. Lett 6:465~467

F.F. Lange / 1986 / J. Am. Ceram. Soc 69:237~240

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