Percolative mechanism of sliding wear in alumina/zirconia composites

Surface Modification of Al2O3–ZrO2(Y2O3) Eutectic Oxides by Laser Melting: Processing and Wear Resistance

“…The wear resistance of the laser‐melted surfaces was always superior to that of the sintered material. The maximum differences were found in the bars processed at 500 mm/h, whose wear rate was 3.8 × 10 −6 mm 3 /N m, while that of the conventionally sintered material was 2.3 × 10 −6 mm 3 /N m. It should be noted that the wear rates reported here for the sintered material were equivalent to those found in sintered zirconia‐toughened alumina composites also measured with the same experimental setup and testing conditions 30 …”

Tribological behaviour of glass-ceramics reinforced by Yttria Stabilized Zirconia

“…The improvement on the properties of the zirconia reinforced glass-ceramic composites was attributed to phase transformation from tetragonal to monoclinic and to the relationship between the glassy matrix and the crystalline second phase in the strengthening and toughening mechanisms of these ceramics. The strengthening mechanisms of zirconia reinforced glass-ceramic composites are based on stopping, deflection or bridging the crack propagation [41,49,[51][52][53][54][55]; either, on compressive residual stresses due to thermal mismatch between the glass-ceramic matrix and inorganic fillers. It has been mentioned that the optimization of the microstructure is an important factor for improvement on friction and wear behavior of dental glassceramic [47,56].…”

Sliding Wear Behavior of ZTA with Different Yttria Stabilizer Content

“…It was shown that stabilizer content has to be carefully adjusted to the zirconia content and is a critical parameter for the transformability of zirconia . Previous studies on wear resistance of ZTA focused on the correlations between different contents of 3Y‐TZP and wear behavior . It was found that the transition from a mild to a severe fracture controlled wear process in these composites can be shifted to more extreme operating conditions, for instance, higher loads and higher velocities by increasing the zirconia content .…”