The aim of this work is to determine the values of the hardness and elastic modulus of the phases present in CaZrO₃-MgO-ZrO₂ composites and to analyse their contribution to the composite properties. Two materials previously developed with the same major phases (CaZrO₃, MgO and c-ZrO₂) present in different volume fractions and grain size have been analysed. The hardness and Young’s modulus of each phase determined by nanoindentation are independent from the specific composite and coincident with nanoindentation values for single phase bulk materials. The contribution of the individual phases to Young’s modulus of the multiphase materials is in agreement with calculations using the nanoindentation values and the Voight upper limit of the “rule of mixtures”. Scale effect due to microcracking has been observed for micro-hardness values of the composites and differences between calculations and experimental values are related to this effect.

这项工作的目的是确定CaZrO ₃ -MgO-ZrO ₂复合材料中存在的相的硬度和弹性模量的值，并分析它们对复合材料性能的贡献。先前开发的具有相同主要相的两种材料（CaZrO ₃，MgO和c-ZrO ₂）存在于不同的体积分数和粒度。通过纳米压痕确定的每个相的硬度和杨氏模量与特定的复合材料无关，并且与单相块状材料的纳米压痕值一致。各个相对多相材料的杨氏模量的贡献与使用纳米压痕值和“混合物规则”的沃伊特上限进行的计算是一致的。对于复合材料的显微硬度值，已经观察到由于微裂纹引起的结垢效应，计算值和实验值之间的差异与此效应有关。