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author:

Wang, Qidi (Wang, Qidi.) [1] | Kainuma, Shigenobu (Kainuma, Shigenobu.) [2] | Zhuang, Shusen (Zhuang, Shusen.) [3] (Scholars:庄树森) | Haraguchi, Manabu (Haraguchi, Manabu.) [4]

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EI Scopus SCIE

Abstract:

This study explored the feasibility of direct coating of steel surfaces treated with a continuous-wave laser (CWL). The adhesion and corrosion resistance of Heavy-Duty Paint coatings were evaluated on CWL-treated surfaces and compared with those of surfaces treated with molten alumina blasting. The results showed that the surface texture created by CWL provided greater adhesion of the Rc-I coating than its cohesive strength. However, the presence of oxides on the CWL-treated surfaces caused a high cathodic disbondment (CD), which reduced the corrosion resistance of the coated steel in corrosive environments. Decreasing the laser head sweep speed can improve the surface roughness and area but does not address the issues of CD and corrosion creep (CC). This study concludes that, given the limitations of current commercial CWL systems, it is recommended to blast CWL-treated surfaces before coating to improve durability and corrosion resistance in corrosive environments.

Keyword:

Cathodic disbondment Continuous wave laser Corrosion resistance Oxide film Surface texture

Community:

  • [ 1 ] [Wang, Qidi]Tongji Univ, Dept Bridge Engn, Shanghai 200092, Peoples R China
  • [ 2 ] [Kainuma, Shigenobu]Kyushu Univ, Fac Engn, Dept Civil Engn, Fukuoka 8190395, Japan
  • [ 3 ] [Zhuang, Shusen]Fuzhou Univ, Sch Adv Mfg, Fuzhou 362251, Jinjiang, Peoples R China
  • [ 4 ] [Haraguchi, Manabu]TOYOKOH Inc, CoolLaser Div, Shizuoka 4340004, Japan

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Source :

CASE STUDIES IN CONSTRUCTION MATERIALS

ISSN: 2214-5095

Year: 2023

Volume: 19

6 . 5

JCR@2023

6 . 5 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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