Sintering behaviour and microstructure of 3Y-TZP + 8 mol% CuO nano-powder composite

S. Ran; A.J.A. Winnubst; H. Koster; P.J. de Veen; D.H.A. Blank

doi:10.1016/j.jeurceramsoc.2006.04.039

Sintering behaviour and microstructure of 3Y-TZP + 8 mol% CuO nano-powder composite

S. Ran, A.J.A. Winnubst, H. Koster, P.J. de Veen, D.H.A. Blank

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Abstract

Nanocrystalline 3Y-TZP and copper-oxide powders were prepared by co-precipitation of metal chlorides and copper oxalate complexation– precipitation, respectively.Asignificant enhancement in sintering activity of 3Y-TZP nano-powders, without presence of liquid phase,was achieved by addition of 8 mol% CuO nano-powder, resulting in an extremely fast densification between 750 and 900 ◦C. This enhancement in sintering activity was explained by an increase in grain-boundary mobility as caused by dissolution of CuO in the 3Y-TZP matrix. The nano-powder composite was densified to 96% by pressureless sintering at 1130 ◦C for 1 h. Considerable tetragonal to monoclinic phase transformation of the zirconia phase was observed by high temperature XRD analysis. This zirconia phase transformation is discussed in terms of reactions between CuO and yttria as segregated to the 3Y-TZP grain boundaries.

Original language	English
Pages (from-to)	683-687
Journal	Journal of the European Ceramic Society
Volume	27
Issue number	2-3
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2006.04.039
Publication status	Published - 2007

Keywords

Sintering
ZrO2
Transition metal oxides
Nanocomposites

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10.1016/j.jeurceramsoc.2006.04.039

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title = "Sintering behaviour and microstructure of 3Y-TZP + 8 mol% CuO nano-powder composite",

abstract = "Nanocrystalline 3Y-TZP and copper-oxide powders were prepared by co-precipitation of metal chlorides and copper oxalate complexation– precipitation, respectively.Asignificant enhancement in sintering activity of 3Y-TZP nano-powders, without presence of liquid phase,was achieved by addition of 8 mol% CuO nano-powder, resulting in an extremely fast densification between 750 and 900 ◦C. This enhancement in sintering activity was explained by an increase in grain-boundary mobility as caused by dissolution of CuO in the 3Y-TZP matrix. The nano-powder composite was densified to 96% by pressureless sintering at 1130 ◦C for 1 h. Considerable tetragonal to monoclinic phase transformation of the zirconia phase was observed by high temperature XRD analysis. This zirconia phase transformation is discussed in terms of reactions between CuO and yttria as segregated to the 3Y-TZP grain boundaries.",

keywords = "Sintering, ZrO2, Transition metal oxides, Nanocomposites",

author = "S. Ran and A.J.A. Winnubst and H. Koster and {de Veen}, P.J. and D.H.A. Blank",

year = "2007",

doi = "10.1016/j.jeurceramsoc.2006.04.039",

language = "English",

volume = "27",

pages = "683--687",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier B.V.",

number = "2-3",

}

TY - JOUR

T1 - Sintering behaviour and microstructure of 3Y-TZP + 8 mol% CuO nano-powder composite

AU - Ran, S.

AU - Winnubst, A.J.A.

AU - Koster, H.

AU - de Veen, P.J.

AU - Blank, D.H.A.

PY - 2007

Y1 - 2007

N2 - Nanocrystalline 3Y-TZP and copper-oxide powders were prepared by co-precipitation of metal chlorides and copper oxalate complexation– precipitation, respectively.Asignificant enhancement in sintering activity of 3Y-TZP nano-powders, without presence of liquid phase,was achieved by addition of 8 mol% CuO nano-powder, resulting in an extremely fast densification between 750 and 900 ◦C. This enhancement in sintering activity was explained by an increase in grain-boundary mobility as caused by dissolution of CuO in the 3Y-TZP matrix. The nano-powder composite was densified to 96% by pressureless sintering at 1130 ◦C for 1 h. Considerable tetragonal to monoclinic phase transformation of the zirconia phase was observed by high temperature XRD analysis. This zirconia phase transformation is discussed in terms of reactions between CuO and yttria as segregated to the 3Y-TZP grain boundaries.

AB - Nanocrystalline 3Y-TZP and copper-oxide powders were prepared by co-precipitation of metal chlorides and copper oxalate complexation– precipitation, respectively.Asignificant enhancement in sintering activity of 3Y-TZP nano-powders, without presence of liquid phase,was achieved by addition of 8 mol% CuO nano-powder, resulting in an extremely fast densification between 750 and 900 ◦C. This enhancement in sintering activity was explained by an increase in grain-boundary mobility as caused by dissolution of CuO in the 3Y-TZP matrix. The nano-powder composite was densified to 96% by pressureless sintering at 1130 ◦C for 1 h. Considerable tetragonal to monoclinic phase transformation of the zirconia phase was observed by high temperature XRD analysis. This zirconia phase transformation is discussed in terms of reactions between CuO and yttria as segregated to the 3Y-TZP grain boundaries.

KW - Sintering

KW - ZrO2

KW - Transition metal oxides

KW - Nanocomposites

U2 - 10.1016/j.jeurceramsoc.2006.04.039

DO - 10.1016/j.jeurceramsoc.2006.04.039

M3 - Article

SN - 0955-2219

VL - 27

SP - 683

EP - 687

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 2-3

ER -

Sintering behaviour and microstructure of 3Y-TZP + 8 mol% CuO nano-powder composite

Abstract

Keywords

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