期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 144, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2020.106040
关键词
Electroless Nickel coating; Ni-B; Ni-W-B; Corrosion fatigue; 7075 Al alloy
资金
- Istanbul Technical University [34461]
The research experimentally investigated the impact of electroless Ni-B and Ni-W-B coatings on the fatigue and corrosion-fatigue life of 7075 Al alloy. Results showed that Ni-B coating provided superior resistance in both corrosion and corrosion fatigue, leading to considerable improvement in corrosion fatigue performance of coated specimens.
This research experimentally determines the effect of electroless Ni-B and Ni-W-B coatings on the fatigue and corrosion-fatigue life of 7075 Al alloy substrate. SEM, XRD, fracture toughness and potentiodynamic polarization tests exhibited the characteristics of the coatings. The fatigue test results revealed that easy crack initiation from the brittle coating is the main responsible for a reduction in fatigue performance of coated specimen. The Ni-B coating offered superior resistance in terms of both corrosion and corrosion fatigue compared to Ni-W-B coating. Considerable improvement was achieved in corrosion fatigue performance of Ni-B coated specimens.
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