Influence of Sealing on Damage Development in Thermally Sprayed Al–Zn–Zr Coating

Kim, Seong-Jong; Lee, Seungjun; Park, Young-Soo; Jeong, Jae-Yong; Jang, Seok-Ki

doi:10.1166/sam.2014.2118

Cited by 3 publications

(2 citation statements)

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“…It can be seen that both Zn and Cr coating can greatly improve the corrosion fatigue of AH 32 steel, and this effect enhances with the decrease of stress. This is attributed to the interaction of physical isolation, compressive residual stresses induced by arc spray and electrochemistry function of the coating materials [28][29][30]. An interesting phenomenon is that the effects of Zn and Cr coating on fatigue life extension are dramatically dependent on the stress level.…”

Section: Effect Of Coating On Corrosion Fatiguementioning

confidence: 99%

Durability method on corrosion fatigue performance of AH 32 steel

Huang

Wang

2019

Frattura Ed Integrità Strutturale

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A durability method in view of cathodic protection is proposed to improve the corrosion fatigue resistance of AH 32 steel in seawater. By aid of corrosion fatigue tests, the effects of thermal spraying Zn (zinc) and Cr (chromium) coating corrosion fatigue lives are quantitatively determined, respectively, and electrochemical measurement and fracture analysis are used to analyze the life-prolonging mechanism of these two coatings on corrosion fatigue. The results show that both Zn and Cr coating improve the corrosion fatigue resistance of AH 32 steel, and the effect enhances with the decrease of stress. The effect of Cr coating on corrosion fatigue of AH 32 steel mainly reflects in extending the crack initiation life for its better corrosion resistance. While the effect of Zn coating on corrosion fatigue lies in not only inhibiting the initiation of corrosion fatigue but also restraining crack propagation as cathodic protection materials. To sum up, Cr coating has a better durability effect than Zn coating at higher stress level, while Zn exceeds Cr at low stress level.

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Section: Effect Of Coating On Corrosion Fatiguementioning

confidence: 99%

Durability method on corrosion fatigue performance of AH 32 steel

Huang

Wang

2019

Frattura Ed Integrità Strutturale

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“…Anodic coatings protect marine steel from corrosion and corrosion fatigue by physical isolation and cathodic protection. Therefore, the spraying qualities, such as the porosity and electrochemical activity of coatings, significantly determine the protection effect [26,27]. Meanwhile, most marine structures, such as deepwater risers, are subject to a severe environment and random bending loads [28].…”

Section: Introductionmentioning

confidence: 99%

Effect of Al–Zn Alloy Coating on Corrosion Fatigue Behavior of X80 Riser Steel

2019

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This paper presents a corrosion fatigue cyclic failure test for X80 steel, which has arc sprayed with an Al–Zn coating in natural seawater under different stress levels. We found that the Al–Zn coating can significantly improve the corrosion fatigue resistance and slow the crack initiation of X80 steel. The effect of the Al–Zn coating on the corrosion fatigue crack initiation is mainly attributed to its physical isolation, cathodic protection and residual prestress while the effect on crack propagation is due to its inhibition of the formation and evolution of secondary cracks. Moreover, according to the test results, a new life prediction model for corrosion fatigue based on the damage evolution law is proposed and the effect of corrosion–fatigue coupling damage in the proposed model is also considered.

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Corrosion Behavior of Arc-Sprayed Pore-Sealed Zn and Al Coatings in Seawater Containing Sulfate-Reducing Bacteria (SRB)

Qiao

Duan

et al. 2021

J Therm Spray Tech

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Influence of Sealing on Damage Development in Thermally Sprayed Al–Zn–Zr Coating

Cited by 3 publications

References 0 publications

Durability method on corrosion fatigue performance of AH 32 steel

Durability method on corrosion fatigue performance of AH 32 steel

Effect of Al–Zn Alloy Coating on Corrosion Fatigue Behavior of X80 Riser Steel

Corrosion Behavior of Arc-Sprayed Pore-Sealed Zn and Al Coatings in Seawater Containing Sulfate-Reducing Bacteria (SRB)

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