The investigated metal-metal composites were produced by the compocasting process using the standard zinc-aluminium alloy ZA-27 as a matrix and titanium microparticles (particle size approx. 10 μm) as a secondary phase. The amount of Ti microparticles was 1 and 2 wt%. Small amount (0.5 wt%) of alumina nanoparticles (particle size 20–30 nm) is also used, as reinforcement. The aim of the presented research was to evaluate the possibility of producing such composites, as well as to see the effect of the addition of Ti microparticles and/or alumina nanoparticles on their microstructure, mechanical and tribological properties. Microstructure and worn surfaces analysis were performed by scanning electron microscope, and mechanical properties were analysed through the Vickers microhardness values. Tribological properties were determined on tribometer with line contact, under mixed lubrication conditions. Microstructural analysis showed that the distribution of Ti microparticles has been improved due to the addition of Al₂O₃ nanoparticles. This better distribution did not show any significant influence on the microhardness values or coefficient of friction values of the composites, but it induced higher wear resistance of metal-metal composites reinforced with Al₂O₃ nanoparticles. Better distribution and higher amount of Ti particles increased the surface area of the matrix that was protected with Ti particles during sliding and reduced wear.

所研究的金属-金属复合材料是通过压铸工艺生产的，使用标准锌铝合金ZA-27作为基质，钛微粒（粒径约10μm）作为第二相。Ti微粒的量为1重量％和2重量％。少量（0.5 wt％）的氧化铝纳米颗粒（粒径20–30 nm）也用作增强材料。提出的研究的目的是评估生产这种复合材料的可能性，以及观察添加Ti微粒和/或氧化铝纳米颗粒对其微观结构，机械和摩擦学性能的影响。用扫描电子显微镜进行显微组织和磨损表面分析，并通过维氏显微硬度值分析机械性能。在混合润滑条件下，在具有线接触的摩擦计上确定摩擦学性能。显微组织分析表明，由于添加了铝，Ti微粒的分布得到了改善₂ O ₃纳米粒子。这种更好的分布对复合材料的显微硬度值或摩擦系数值没有显着影响，但是它诱导了用Al ₂ O ₃纳米颗粒增强的金属-金属复合材料的更高的耐磨性。更好的分布和更多数量的Ti颗粒增加了在滑动过程中受Ti颗粒保护的基体表面积，并减少了磨损。