钛合金涂层力学性能纳米压痕测试研究

Mechanical Properties of Coatings on Titanium Alloys Characterized by Nanoindentation Test

通过纳米压痕测试技术对三种采用化学镀方法制备的钛合金抗微动涂层基本力学性能进行了表征,讨论了峰值载荷等试验参数对模量和硬度测试结果的影响。结果表明:复合纳米颗粒后的耐磨涂层抗变形的能力最好,可作为抗微动涂层使用,峰值载荷对试样弹性模量和硬度测试结果影响明显,随峰值载荷增大测试结果逐渐减小,减小趋势呈非线性。

The mechanical properties of three kinds of coatings manufactured by chemical plating on the titanium materi- al were investigated by nanoindentation technique. Firstly, its mechanical responses （hardness and modulus） were obtained by changing the peak load. And the effect of peak load on nanoindentation measurement was discussed. It was found that, the caculated modulus and hardness of the coatings responds were more sensitively to the peak load; the results gradually decreased as the peak load increases, and the reducing trend is non-linear; the wear-resistant coating with nanoparticles has the best ability to resist deformation, and it can be used as an anti-fretting coating. This investigation established the founda- tion to scientificly evaluate the mechanical properties of coating materials.