Dependence of the Strength Properties of Aluminum Materials on the Concentration of ZrO2 Nanoparticles

New data were obtained concerning the effect of small additions of zirconia nanoparticles on the strength properties of powder matrices produced by cold pressing of powders with subsequent sintering in a forevacuum. The matrices were either a pure aluminum powder or an aluminum–1.5 vol % copper powder mixture. It was shown that the introduction of nanoadditives to even an insignificant concentration causes a tangible increase in the mechanical properties of the materials, such as tensile, flexural, compressive, and offset yield strengths.