Production of defect-poor nanostructured ceramics of yttria-zirconia

C.D. Sagel-Ransijn, C.D. Sagel-Ransijn, Aloysius J.A. Winnubst, B. Kerkwijk, Anthonie Burggraaf, A.J. Burggraaf, H. Verweij

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Abstract

For the production of nanostructured ceramics of yttria-zirconia four powders differing in agglomerate strength, agglomerate size and crystallite size are compared. An ultra-fine-grained ceramic with a final density of 98% and a grain size of 0.18 μm could be produced from a hydrothermally crystallized ethanol-washed powder. The remaining porosity is caused by some residual defects which are present due to the irregular shape of the agglomerates and which cause improper die filling. A commercially available powder was also investigated. This powder consists of homogeneous porous, spherical, weak agglomerates. The resulting ceramic has a high density (≥ 99%) but cannot be obtained with ultra-fine grain size (minimum grain size is 0.3 μm). The air-crystallized ethanol-washed powder resulted, after sintering, in larger porosities. In this case the powder consists of weak and some strong agglomerates and a few defect clusters are found in the sintered ceramic which limit the maximum attainable density to 92%. The air-crystallized water-washed powder consists of agglomerates which are too strong to be fractured during compaction. The sintered ceramics contain a large amount of porosity (20%) which is attributed to the presence of inter-agglomerate pores.
Original languageUndefined
Pages (from-to)831-841
Number of pages11
JournalJournal of the European Ceramic Society
Volume17
Issue number6
DOIs
Publication statusPublished - 1997

Keywords

  • METIS-106483
  • IR-12079

Cite this

Sagel-Ransijn, C. D., Sagel-Ransijn, C. D., Winnubst, A. J. A., Kerkwijk, B., Burggraaf, A., Burggraaf, A. J., & Verweij, H. (1997). Production of defect-poor nanostructured ceramics of yttria-zirconia. Journal of the European Ceramic Society, 17(6), 831-841. https://doi.org/10.1016/S0955-2219(96)00186-0
Sagel-Ransijn, C.D. ; Sagel-Ransijn, C.D. ; Winnubst, Aloysius J.A. ; Kerkwijk, B. ; Burggraaf, Anthonie ; Burggraaf, A.J. ; Verweij, H. / Production of defect-poor nanostructured ceramics of yttria-zirconia. In: Journal of the European Ceramic Society. 1997 ; Vol. 17, No. 6. pp. 831-841.
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abstract = "For the production of nanostructured ceramics of yttria-zirconia four powders differing in agglomerate strength, agglomerate size and crystallite size are compared. An ultra-fine-grained ceramic with a final density of 98{\%} and a grain size of 0.18 μm could be produced from a hydrothermally crystallized ethanol-washed powder. The remaining porosity is caused by some residual defects which are present due to the irregular shape of the agglomerates and which cause improper die filling. A commercially available powder was also investigated. This powder consists of homogeneous porous, spherical, weak agglomerates. The resulting ceramic has a high density (≥ 99{\%}) but cannot be obtained with ultra-fine grain size (minimum grain size is 0.3 μm). The air-crystallized ethanol-washed powder resulted, after sintering, in larger porosities. In this case the powder consists of weak and some strong agglomerates and a few defect clusters are found in the sintered ceramic which limit the maximum attainable density to 92{\%}. The air-crystallized water-washed powder consists of agglomerates which are too strong to be fractured during compaction. The sintered ceramics contain a large amount of porosity (20{\%}) which is attributed to the presence of inter-agglomerate pores.",
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author = "C.D. Sagel-Ransijn and C.D. Sagel-Ransijn and Winnubst, {Aloysius J.A.} and B. Kerkwijk and Anthonie Burggraaf and A.J. Burggraaf and H. Verweij",
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Sagel-Ransijn, CD, Sagel-Ransijn, CD, Winnubst, AJA, Kerkwijk, B, Burggraaf, A, Burggraaf, AJ & Verweij, H 1997, 'Production of defect-poor nanostructured ceramics of yttria-zirconia', Journal of the European Ceramic Society, vol. 17, no. 6, pp. 831-841. https://doi.org/10.1016/S0955-2219(96)00186-0

Production of defect-poor nanostructured ceramics of yttria-zirconia. / Sagel-Ransijn, C.D.; Sagel-Ransijn, C.D.; Winnubst, Aloysius J.A.; Kerkwijk, B.; Burggraaf, Anthonie; Burggraaf, A.J.; Verweij, H.

In: Journal of the European Ceramic Society, Vol. 17, No. 6, 1997, p. 831-841.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Production of defect-poor nanostructured ceramics of yttria-zirconia

AU - Sagel-Ransijn, C.D.

AU - Sagel-Ransijn, C.D.

AU - Winnubst, Aloysius J.A.

AU - Kerkwijk, B.

AU - Burggraaf, Anthonie

AU - Burggraaf, A.J.

AU - Verweij, H.

PY - 1997

Y1 - 1997

N2 - For the production of nanostructured ceramics of yttria-zirconia four powders differing in agglomerate strength, agglomerate size and crystallite size are compared. An ultra-fine-grained ceramic with a final density of 98% and a grain size of 0.18 μm could be produced from a hydrothermally crystallized ethanol-washed powder. The remaining porosity is caused by some residual defects which are present due to the irregular shape of the agglomerates and which cause improper die filling. A commercially available powder was also investigated. This powder consists of homogeneous porous, spherical, weak agglomerates. The resulting ceramic has a high density (≥ 99%) but cannot be obtained with ultra-fine grain size (minimum grain size is 0.3 μm). The air-crystallized ethanol-washed powder resulted, after sintering, in larger porosities. In this case the powder consists of weak and some strong agglomerates and a few defect clusters are found in the sintered ceramic which limit the maximum attainable density to 92%. The air-crystallized water-washed powder consists of agglomerates which are too strong to be fractured during compaction. The sintered ceramics contain a large amount of porosity (20%) which is attributed to the presence of inter-agglomerate pores.

AB - For the production of nanostructured ceramics of yttria-zirconia four powders differing in agglomerate strength, agglomerate size and crystallite size are compared. An ultra-fine-grained ceramic with a final density of 98% and a grain size of 0.18 μm could be produced from a hydrothermally crystallized ethanol-washed powder. The remaining porosity is caused by some residual defects which are present due to the irregular shape of the agglomerates and which cause improper die filling. A commercially available powder was also investigated. This powder consists of homogeneous porous, spherical, weak agglomerates. The resulting ceramic has a high density (≥ 99%) but cannot be obtained with ultra-fine grain size (minimum grain size is 0.3 μm). The air-crystallized ethanol-washed powder resulted, after sintering, in larger porosities. In this case the powder consists of weak and some strong agglomerates and a few defect clusters are found in the sintered ceramic which limit the maximum attainable density to 92%. The air-crystallized water-washed powder consists of agglomerates which are too strong to be fractured during compaction. The sintered ceramics contain a large amount of porosity (20%) which is attributed to the presence of inter-agglomerate pores.

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KW - IR-12079

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DO - 10.1016/S0955-2219(96)00186-0

M3 - Article

VL - 17

SP - 831

EP - 841

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 6

ER -