A newly designed Ni–P duplex coating on friction stir welding joint of 6061-T6 aluminum

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Jiahuan Chen
  • Yuxin Wang
  • Wei Gao
  • Dongpeng Wang
  • Shujin Chen
  • And 1 others
  • Junhua Luan

Detail(s)

Original languageEnglish
Article number128940
Journal / PublicationSurface and Coatings Technology
Volume448
Online published3 Oct 2022
Publication statusPublished - 25 Oct 2022

Abstract

Friction stir welding (FSW) joints often require coatings with good adhesion and corrosion resistance to improve durability. In this research, a newly designed duplex Ni–P coating was fabricated on the FSW joint of 6061-T6 aluminum alloy. An anodic aluminum oxide (AAO) layer was formed on the joint substrate as the intermediate layer to enhance adhesion, and a Ni–P layer was then electroplated on top to strengthen the corrosion and wear properties. The bonding strength, anti-corrosion property and wear resistance of the duplex Ni–P coating were investigated systematically and compared with those of the traditional zincated Ni–P coating. The duplex Ni–P coating results in superior adhesion and significantly improved anti-corrosion property than traditional Ni–P coating. The friction property of the FSW joint with duplex Ni–P coating is 88 % higher than that of the original FSW joint and 75 % higher than that of the FSW joint coated with traditional Ni–P coating. The related mechanisms were discussed in detail.

Research Area(s)

  • Anodic oxidation, Corrosion protection, Electrodeposition, FSW joints, Wear resistance

Citation Format(s)

A newly designed Ni–P duplex coating on friction stir welding joint of 6061-T6 aluminum. / Chen, Jiahuan; Wang, Yuxin; Gao, Wei et al.

In: Surface and Coatings Technology, Vol. 448, 128940, 25.10.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review