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author:

Chen, J. (Chen, J..) [1] | Liang, S. (Liang, S..) [2] | Fu, D. (Fu, D..) [3] | Fan, W. (Fan, W..) [4] | Lin, W. (Lin, W..) [5] | Ren, W. (Ren, W..) [6] | Zou, L. (Zou, L..) [7] | Cui, X. (Cui, X..) [8]

Indexed by:

Scopus

Abstract:

In this paper, a novel composite coating combining Layered Double Hydroxides (LDH) film and Micro-arc Oxidation (MAO) ceramic layer was designed to further enhance anti-corrosion protection of coating. The MgFe-LDH/MAO composite coating was prepared through in situ synthesis MgFe-LDH nanoflakes on the surface of MAO coating. Subsequently, the active anti-corrosion mechanism of MgFe-LDH layer was revealed through microstructure characterization and electrochemical test. Furthermore, the interaction between LDH nanoflakes and original MAO coating was investigated, too. The results show that: LDH nanoflakes preferentially grow in the pores of original MAO coating, and form a dense layer on MAO coating. In situ prepared LDH layer gives a strong and stable adhesion on MAO coating, besides the dissolution of original MAO coating affects LDH growth. MgFe-LDH layer supplied an active anti-corrosion protection for Mg alloy, since LDH can effectively seal the inherent defects of MAO coating and absorb corrosive medium in environment. © 2020

Keyword:

Active anti-corrosion mechanism; Layered double hydroxide; Mg alloys; Micro-arc oxidation

Community:

  • [ 1 ] [Chen, J.]School of Materials Science and Engineering, Fuzhou University, Qishan Campus, Minhou, Fujian Province 350116, China
  • [ 2 ] [Liang, S.]School of Materials Science and Engineering, Fuzhou University, Qishan Campus, Minhou, Fujian Province 350116, China
  • [ 3 ] [Fu, D.]School of Materials Science and Engineering, Fuzhou University, Qishan Campus, Minhou, Fujian Province 350116, China
  • [ 4 ] [Fan, W.]School of Materials Science and Engineering, Fuzhou University, Qishan Campus, Minhou, Fujian Province 350116, China
  • [ 5 ] [Lin, W.]School of Materials Science and Engineering, Fuzhou University, Qishan Campus, Minhou, Fujian Province 350116, China
  • [ 6 ] [Ren, W.]School of Materials Science and Engineering, Fuzhou University, Qishan Campus, Minhou, Fujian Province 350116, China
  • [ 7 ] [Zou, L.]School of Materials Science and Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 8 ] [Cui, X.]School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 350001, China

Reprint 's Address:

  • [Chen, J.]School of Materials Science and Engineering, Fuzhou University, Qishan Campus, China

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Source :

Journal of Alloys and Compounds

ISSN: 0925-8388

Year: 2020

Volume: 831

5 . 3 1 6

JCR@2020

5 . 8 0 0

JCR@2023

ESI HC Threshold:196

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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