Strengthening Zirconia by Adding Both Nickel and Alumina Particles
In the present study, the processing-properties relationships of the ZrO2/(Ni+Al2O3) composites are examined. Dense composites were prepared either by pulse electrical current sintering (PECS) at 1350C for 5 minutes or by pressureless sintering (PLS) at 1600C for 1 h. The size of Ni particles is as small as 30 nm to 50 nm. Though the size of ZrO2 grains in the matrix increases as alumina and nickel particles are added, the strength of the ZrO2/(Ni+Al2O3) composites is significantly higher than that of monolithic ZrO2.
Chi Y.A. Tsao and Jing Kun Guo
W. H. Tuan et al., "Strengthening Zirconia by Adding Both Nickel and Alumina Particles", Key Engineering Materials, Vol. 313, pp. 47-52, 2006