Corrosion resistant nickel coating with strong adhesion on AZ31B magnesium alloy prepared by an in-situ shot-peening-assisted cold spray

[Display omitted] •Fully dense Ni was coated on AZ31B by an in-situ shot peening assisted cold spray.•Strong adhesion > 64.5 MPa was achieved for the Ni coating on AZ31B.•The Ni coated AZ31B presents comparable corrosion performance with bulk Ni.•This Ni coating can effectively isolate the corros...

Full description

Saved in:
Bibliographic Details
Published in:Corrosion science 2018-07, Vol.138, p.105-115
Main Authors: Wei, Ying-Kang, Li, Yu-Juan, Zhang, Yue, Luo, Xiao-Tao, Li, Chang-Jiu
Format: Article
Language:English
Subjects:
Adhesive strength
Alloys
Cold spray
Cold spraying
Corrosion prevention
Corrosion protection coating
Corrosion resistance
Corrosion resistant alloys
EIS
Electrochemical analysis
Immersion tests (corrosion)
Low temperature resistance
Magnesium
Magnesium base alloys
Microelectronics
Nickel
Nickel coatings
Polarization
Protective coatings
Salt spray tests
Shot peening
Sodium chloride
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Fully dense Ni was coated on AZ31B by an in-situ shot peening assisted cold spray.•Strong adhesion > 64.5 MPa was achieved for the Ni coating on AZ31B.•The Ni coated AZ31B presents comparable corrosion performance with bulk Ni.•This Ni coating can effectively isolate the corrosive media for 1000 h. A 150 μm thick fully dense Ni coating was deposited on AZ31B magnesium alloy by a newly developed in-situ shot-peening-assisted cold spray process. Strong adhesion strength of Ni coating (>65.4 MPa) was achieved. The present Ni coated AZ31B reveals comparable electrochemical behavior with annealed bulk Ni in 3.5 wt.% NaCl aqueous solution. Long-term immersion test (1000 h) and NaCl salt spray test (1000 h) further verified the robust corrosion resistance of the cold sprayed Ni coating. This work provides a novel green approach for corrosion protection of magnesium alloys.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2018.04.018