摘要
The periodic [Ti/TiB2]n （n=l, 2, 3） multilayered films were prepared on the substrate of AISI 316L stainless steel by magnetron sputtering to enhance the adhesion of TiB2 films based on the remarkable mechanical performance of layered films. The influence of periods on microstructure, adhesion and hardness of [Ti/TiB2]n multilayered films was studied. X-ray diffraction （XRD） analysis shows that the monolayer TiB2 films exhibit （001） preferred orientation, and the preferred orientation of [Ti/TiB2], multilayered films transfers from （001） to （100） with the increase of periods. The cross-sectional morphology of each film displays homogeneity by field emission scanning electron microscopy （FESEM）. The hardness of the films measured via nanoindention changes from 20 to 26 GPa with the increase of periods. These values of hardness are a bit lower than that of the monolayer TiB2 films which is up to 33 GPa. However, the [Ti/TiB2]n multilayered films present a considerably good adhesion, which reaches a maximum of 24 N, in comparison with the monolayer TiB2 films according to the experimental results.
基于多层膜优异的力学性能,采用磁控溅射法在316L不锈钢基体表面沉淀[Ti/TiB2]n(n=1,2,3)多层膜以增强TiB2薄膜的膜基结合强度。研究周期数对多层膜的结构、硬度及结合力的影响。结果表明:TiB2单层膜表现为(001)方向的织构。随着周期数的增加,多层膜的织构方向由(001)转变为(100);多层膜的硬度从20 GPa增加到26 GPa,但略低于TiB2单层膜的硬度(33 GPa);相对于单膜的膜基结合力(9.5 N),多层膜表现出较好膜基结合力,最大结合力可达24 N。
基金
Project(51175212)supported by the National Natural Science Foundation of China
