Corrosion behavior of NiTi alloy subjected to femtosecond laser shock peening without protective coating in air environment
作者: Hao WangJens JürgensenPeer DeckerZhiyong HuKai YanEvgeny L. GurevichAndreas Ostendorf
作者单位: 1Chair of Applied Laser Technologies, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
2Institute for Materials, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
3Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, ZEMOS, Universitätsstr. 150, 44801 Bochum, Germany
4Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
刊名: Applied Surface Science, 2020, Vol.501
来源数据库: Elsevier Journal
DOI: 10.1016/j.apsusc.2019.144338
关键词: Laser shock peeningFemtosecond laserNiTi alloyCorrosion behaviorLaser surface treatment
英文摘要: Abstract(#br)Laser shock peening with femtosecond laser was used to improve the corrosion resistance of biomedical NiTi alloy without protective coating in the air environment. The energy dispersive X-ray analysis (EDX) and X-ray diffraction (XRD) based analysis showed that the laser ablation could produce titanium oxide layer and femtosecond laser shock peening (FsLSP) can generate residual stress in the surface layer of NiTi alloy. The FsLSP improved the corrosion resistance of NiTi in 3.5% NaCl solution and Hank’s solution and also prevented the formation of corrosion cracks and pits during corrosion testing. The reasons for the improvement of corrosion behavior may be the generation of residual stress and titanium oxide film during the laser surface treatment.
全文获取路径: Elsevier  (合作)
影响因子:2.112 (2012)

  • peening 冷作硬化
  • alloy 合金
  • laser 激光
  • behavior 行为
  • coating 覆盖层
  • without 在之外
  • protective 保护的
  • shock 冲击冲突
  • treatment 处理
  • surface