In the present work, CeO₂ nanoparticles were extra added into NiTi nanocomposite coating to optimize the spatial microstructures and wear properties. Before adding CeO₂ nanoparticles into NiTi nanocomposite coating, Ti microparticles distributed in forms of cluster in Ni deposits, leading to the spatial inhomogeneity of microstructures like local large grains and residual [200] fiber textures. Correspondingly, the hardness in small-grain regions was up to ~4456 ± 46 MPa, while the hardness in large-grain areas dropped to values as low as ~3493 ± 40 MPa. Besides that, inside pores and jagged surface were observable, confining the wear resistance capacity. The average hardness was ~3814 ± 279 MPa. After extra adding CeO₂ nanoparticles into NiTi nanocomposite coating, Ti microparticles homogeneously scattered throughout the whole nanocomposite coating, leading to the spatial homogeneity of microstructures and properties. Grain size steadily kept at ~40 nm and the hardness stabilized at ~4326 ± 150 MPa. Inside pores vanished, the surface became smooth, and residual [2 0 0] texture was fractured. Benefiting from the modified spatial microstructures and improved hardness, enhanced wear resistance was achieved.

在目前的工作中，将CeO ₂纳米颗粒额外添加到Ni Ti纳米复合涂层中，以优化空间微观结构和磨损性能。在将CeO ₂纳米颗粒添加到Ni Ti纳米复合涂层中之前，Ti微粒以簇形式分布在Ni沉积物中，导致微观结构的空间不均匀性，例如局部大晶粒和残留的[200]纤维织构。相应地，小颗粒区域的硬度高达〜4456±46 MPa，而大颗粒区域的硬度降至低至〜3493±40 MPa。除此之外，还可以观察到内部孔隙和锯齿状表面，从而限制了耐磨性。平均硬度为〜3814±279 MPa。额外添加CeO _2之后纳米粒子进入镍钛纳米复合涂层后，钛微粒均匀地分散在整个纳米复合涂层中，从而导致微观结构和性能的空间均匀性。晶粒尺寸稳定地保持在〜40 nm，硬度稳定在〜4326±150 MPa。内部孔消失，表面变得光滑，残留的[2 0 0]断裂。得益于改进的空间微观结构和改进的硬度，获得了增强的耐磨性。