Bioinert zirconia and alumina ceramic devices are widely used, both in orthopaedics and in dentistry. In order to improve their bonding with bone tissues or dental resin cements, their surfaces are often roughened at different scales. In this work, we have investigated the effects of the same sandblasting treatment on alumina, zirconia and a zirconia-toughened alumina, focusing on their mechanical performance and the interplay between surface defects and residual stresses. Additionally, we explored the impact of the treatment on the hydrothermal aging of the two zirconia-containing materials. Residual stresses generated during sandblasting were always predominant over surface defects but their effect varied with the material: while they had a weakening effect on alumina, they reinforced both zirconia-containing materials. Finally, we found that the monoclinic grains at the surface of sandblasted zirconia recrystallized into tetragonal nanograins after annealing and this led to an increased resistance to aging.

生物惰性氧化锆和氧化铝陶瓷设备在骨科和牙科领域均得到广泛使用。为了改善它们与骨组织或牙科树脂粘固剂的结合，它们的表面通常以不同的比例被粗糙化。在这项工作中，我们研究了相同的喷砂处理对氧化铝，氧化锆和氧化锆增韧氧化铝的影响，重点是它们的机械性能以及表面缺陷和残余应力之间的相互作用。此外，我们探讨了该处理对两种含氧化锆材料的水热老化的影响。喷砂过程中产生的残余应力始终主要是表面缺陷，但其作用随材料而异：尽管它们对氧化铝具有弱化作用，但它们都增强了两种含氧化锆的材料。最后，