processing of homogeneous zirconia-toughened alumina ceramics with high dry-sliding wear resistance

B. Kerkwijk, Aloysius J.A. Winnubst, E.J. Mulder, H. Verweij

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Abstract

The preparation of dense homogeneous zirconia-toughened alumina (ZTA) with high dry-sliding wear resistance is described. These ZTA ceramics are obtained by sintering green compacts, made by colloidal filtration of well-defined ZrO2-Al2O3 particle suspensions, for 2 h at 1400°C. The optimum solid and stabilizer concentrations for the filtration process were determined. The sintered ZTA microstructure consists of a homogeneous distribution of zirconia grains in an alumina matrix with grain sizes of 0.2 and 0.5 µm, respectively. In pin-on-disk tribological measurements at relatively high initial contact pressures (1130 MPa) and sliding speeds (0.5 m/s) a very low specific wear rate (about 5 × 10-8 mm3/(N·m)) and a coefficient of friction of 0.45–0.55 were found. It is shown that, in this case, wear is dominated by abrasion and polishing.
Original languageUndefined
Pages (from-to)2087-2093
Number of pages7
JournalJournal of the American Ceramic Society
Volume8
Issue number82
DOIs
Publication statusPublished - 1999

Keywords

  • METIS-105408
  • IR-71481

Cite this

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title = "processing of homogeneous zirconia-toughened alumina ceramics with high dry-sliding wear resistance",
abstract = "The preparation of dense homogeneous zirconia-toughened alumina (ZTA) with high dry-sliding wear resistance is described. These ZTA ceramics are obtained by sintering green compacts, made by colloidal filtration of well-defined ZrO2-Al2O3 particle suspensions, for 2 h at 1400°C. The optimum solid and stabilizer concentrations for the filtration process were determined. The sintered ZTA microstructure consists of a homogeneous distribution of zirconia grains in an alumina matrix with grain sizes of 0.2 and 0.5 µm, respectively. In pin-on-disk tribological measurements at relatively high initial contact pressures (1130 MPa) and sliding speeds (0.5 m/s) a very low specific wear rate (about 5 × 10-8 mm3/(N·m)) and a coefficient of friction of 0.45–0.55 were found. It is shown that, in this case, wear is dominated by abrasion and polishing.",
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author = "B. Kerkwijk and Winnubst, {Aloysius J.A.} and E.J. Mulder and H. Verweij",
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doi = "10.1111/j.1151-2916.1999.tb02045.x",
language = "Undefined",
volume = "8",
pages = "2087--2093",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
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processing of homogeneous zirconia-toughened alumina ceramics with high dry-sliding wear resistance. / Kerkwijk, B.; Winnubst, Aloysius J.A.; Mulder, E.J.; Verweij, H.

In: Journal of the American Ceramic Society, Vol. 8, No. 82, 1999, p. 2087-2093.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - processing of homogeneous zirconia-toughened alumina ceramics with high dry-sliding wear resistance

AU - Kerkwijk, B.

AU - Winnubst, Aloysius J.A.

AU - Mulder, E.J.

AU - Verweij, H.

PY - 1999

Y1 - 1999

N2 - The preparation of dense homogeneous zirconia-toughened alumina (ZTA) with high dry-sliding wear resistance is described. These ZTA ceramics are obtained by sintering green compacts, made by colloidal filtration of well-defined ZrO2-Al2O3 particle suspensions, for 2 h at 1400°C. The optimum solid and stabilizer concentrations for the filtration process were determined. The sintered ZTA microstructure consists of a homogeneous distribution of zirconia grains in an alumina matrix with grain sizes of 0.2 and 0.5 µm, respectively. In pin-on-disk tribological measurements at relatively high initial contact pressures (1130 MPa) and sliding speeds (0.5 m/s) a very low specific wear rate (about 5 × 10-8 mm3/(N·m)) and a coefficient of friction of 0.45–0.55 were found. It is shown that, in this case, wear is dominated by abrasion and polishing.

AB - The preparation of dense homogeneous zirconia-toughened alumina (ZTA) with high dry-sliding wear resistance is described. These ZTA ceramics are obtained by sintering green compacts, made by colloidal filtration of well-defined ZrO2-Al2O3 particle suspensions, for 2 h at 1400°C. The optimum solid and stabilizer concentrations for the filtration process were determined. The sintered ZTA microstructure consists of a homogeneous distribution of zirconia grains in an alumina matrix with grain sizes of 0.2 and 0.5 µm, respectively. In pin-on-disk tribological measurements at relatively high initial contact pressures (1130 MPa) and sliding speeds (0.5 m/s) a very low specific wear rate (about 5 × 10-8 mm3/(N·m)) and a coefficient of friction of 0.45–0.55 were found. It is shown that, in this case, wear is dominated by abrasion and polishing.

KW - METIS-105408

KW - IR-71481

U2 - 10.1111/j.1151-2916.1999.tb02045.x

DO - 10.1111/j.1151-2916.1999.tb02045.x

M3 - Article

VL - 8

SP - 2087

EP - 2093

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 82

ER -