Experimental study on bumps formation textured by nanosecond laser on Ti6Al4V alloy

作     者：Zhifang Liu Tong Niu Yaxi Lei Yuanxin Luo 

作者机构：College of Mechanical EngineeringChongqing University of TechnologyChongqingChina College of Mechanical and Vehicle EngineeringChongqing UniversityChongqingChina China Academy of Engineering PhysicsMianyangChina 

出 版 物：《Biosurface and Biotribology》 (生物表面与生物摩擦学（英文）)

年 卷 期：2023年第9卷第1期

页      面：24-34页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Natural Science Foundation of Chongqing Grant/Award Number:No.cstc2019jcyj-msxmX0114。 

主　　题：laser surface texturing surface modification 

摘      要：The surface properties of biomaterials are the key factors for the success of artificial implants in the body.The creation of patterns on titanium alloys by laser surface texturing techniques can modify the surface to make it multifunctional.The evolution of the surface morphology of Ti6Al4V alloy textured by a nanosecond laser with 1064 nm wavelength in the air is studied.Laser surface texturing treatment is performed on the titanium alloy through different pulse numbers,power,pulse width and scan times to obtain different morphologies.The 2D cross-section profile shows that the morphology can be divided into three types in the evolution process of various pulse numbers,powers and pulse widths:bump-shaped,hump-shaped and crater-shaped.It is found that the effect of pulse width on morphology mainly depends on power.The effects of laser parameters on the height of bumps and the evolution of morphology are the main research points to analyse the topography evolution.The causes of bumps are also analysed.Energy dispersive spectrometer measures the area irradiated by the laser,and it is found that the oxygen content of the bump is up to 43.1%,which can speculate that the bump is the result of the oxidation reaction.