Instituto de Tecnología de Materiales, Universitat Politècnica de València, Camino de Vera S/N, 46022, Valencia, Spain.
Instituto de Tecnología de Materiales, Universitat Politècnica de València, Camino de Vera S/N, 46022, Valencia, Spain.
J Mech Behav Biomed Mater. 2020 Jan;101:103415. doi: 10.1016/j.jmbbm.2019.103415. Epub 2019 Sep 4.
Dense alumina toughened zirconia nanocomposites (ATZ, 3Y-TZP with 20 wt% AlO) were densified by non-conventional microwave sintering technology at relatively low temperatures (1200 and 1300 °C). The sintering method and its effect on densification, microstructure, mechanical properties and tribological behaviour were investigated. The outcomes demonstrated that the density rose as the sintering temperature was higher, and therefore the mechanical properties were enhanced, reaching a maximum hardness (18.4 ± 0.4 GPa) and fracture toughness (5.7 ± 0.3MPa· m). In addition, the samples were subjected to a tribological test in dry and wet conditions, using artificial saliva. In both cases, the coefficient of friction and wear volume for samples obtained by microwave sintering are lower than conventional samples, with the wear volume being two times higher in dry conditions than in wet conditions.
致密氧化铝增韧氧化锆纳米复合材料（ATZ，20wt%AlO 的 3Y-TZP）采用非传统微波烧结技术在相对较低的温度（1200 和 1300°C）下致密化。研究了烧结方法及其对致密化、微观结构、力学性能和摩擦学行为的影响。结果表明，密度随烧结温度的升高而升高，因此力学性能得到提高，硬度达到最大值（18.4±0.4GPa）和断裂韧性（5.7±0.3MPa·m）。此外，对使用人工唾液在干、湿两种条件下进行摩擦学试验的样品进行了测试。在这两种情况下，微波烧结样品的摩擦系数和磨损体积均低于常规样品，且在干燥条件下的磨损体积是湿条件下的两倍。
