Tribological properties of laser surface cladding Ni-base alloy coatings under dry friction and seawater conditions
by Ye-Fa Tan; Long He; Xiao-Long Wang; Hua Tan; Chun-Hua Zhou
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 10, No. 2, 2016

Abstract: Ni-base alloy coatings were prepared on aluminium alloy 7005 by laser surface cladding (LSC). The tribological properties of the coatings under dry friction and seawater conditions were investigated. Results showed that the coatings contained the phases of NiAl, NiAl₃, Al₃Ni₂ and a few Cr₂₃C₆ and CrB. Compared with atmosphere plasma spraying (APS) Ni-base alloy coatings, LSC Ni-base alloy coatings exhibited higher microhardness, interfacial adhesion and cohesion force, and smaller friction coefficients and wear losses. The wear mechanisms of LSC Ni-base alloy coatings changed from micro-cutting wear into multi-plastic deformation wear, adhesive wear and oxidative wear as loads increased in dry friction. In seawater environment, LSC Ni-base coatings experienced micro-cutting wear and pitting corrosion wear at the loads of 3∼6 N, and multi-plastic deformation wear and local fracture wear at the loads higher than 9 N.

Online publication date: Wed, 11-May-2016

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Surface Science and Engineering (IJSURFSE):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com