TY - JOUR
T1 - Effect of temperature on friction and wear behavior of CuO-zirconia composites
AU - Valefi, Mahdiar
AU - de Rooij, Matthias B.
AU - Schipper, Dirk J.
AU - Winnubst, Aloysius J.A.
PY - 2012
Y1 - 2012
N2 - Results of wear tests using an alumina ball sliding against 5 wt% copper oxide doped tetragonal zirconia polycrystalline (CuO-TZP) ceramics are reported as a function of temperature up to 700 °C. The specific wear rate and friction coefficient are strongly dependent on temperature. Below a critical temperature (T < 600 °C), CuO-TZP showed a high coefficient of friction as well as a high wear rate. This was ascribed to the formation of a rough surface, caused by brittle fracture and abrasive wear, based on observations by scanning electron microscopy (SEM), laser scanning microscopy (LSM) and X-ray photoelectron spectroscopy (XPS). However, above 600 °C a self-healing layer is formed at the interface and results in low friction and wear. The mechanism of layer formation and restoration is discussed and rationalized by onset of plastic deformation caused by a reduction reaction of CuO to Cu2O at high temperatures.
AB - Results of wear tests using an alumina ball sliding against 5 wt% copper oxide doped tetragonal zirconia polycrystalline (CuO-TZP) ceramics are reported as a function of temperature up to 700 °C. The specific wear rate and friction coefficient are strongly dependent on temperature. Below a critical temperature (T < 600 °C), CuO-TZP showed a high coefficient of friction as well as a high wear rate. This was ascribed to the formation of a rough surface, caused by brittle fracture and abrasive wear, based on observations by scanning electron microscopy (SEM), laser scanning microscopy (LSM) and X-ray photoelectron spectroscopy (XPS). However, above 600 °C a self-healing layer is formed at the interface and results in low friction and wear. The mechanism of layer formation and restoration is discussed and rationalized by onset of plastic deformation caused by a reduction reaction of CuO to Cu2O at high temperatures.
KW - 2024 OA procedure
U2 - 10.1016/j.jeurceramsoc.2012.02.006
DO - 10.1016/j.jeurceramsoc.2012.02.006
M3 - Article
SN - 0955-2219
VL - 32
SP - 2235
EP - 2242
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 10
ER -