Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Degradation Damage of Stress Corrosion in Epoxy Zinc-Rich Coating/Steel Substrate Systems
In this paper, the corrosion resistance and mechanical properties of a coating/steel substrate system were investigated under the coupling action of the corrosive environment and load. At first, the stress corrosion tests were carried out on the coating/steel substrate specimens. Then, nanoindentation tests were used to study the elastic modulus of the coating before and after stress corrosion tests. After that, tensile tests were performed on the specimens before and after stress corrosion tests. In the tensile testing process, the evolution law of surface strain was studied by a digital image correlation method. Further, the cracking characteristics and fracture toughness of the coating/steel substrate system in the corrosion process were generated. Test results indicate that the elastic modulus of the coating/steel substrate system continuously decreases with increasing stress level. In the meantime, the critical cracking strain and fracture toughness of the coating/steel substrate system also decrease with increasing stress level. The coupling effect of the external load and corrosive environment greatly accelerate the corrosion process of the coating/steel substrate system.
Degradation Damage of Stress Corrosion in Epoxy Zinc-Rich Coating/Steel Substrate Systems
In this paper, the corrosion resistance and mechanical properties of a coating/steel substrate system were investigated under the coupling action of the corrosive environment and load. At first, the stress corrosion tests were carried out on the coating/steel substrate specimens. Then, nanoindentation tests were used to study the elastic modulus of the coating before and after stress corrosion tests. After that, tensile tests were performed on the specimens before and after stress corrosion tests. In the tensile testing process, the evolution law of surface strain was studied by a digital image correlation method. Further, the cracking characteristics and fracture toughness of the coating/steel substrate system in the corrosion process were generated. Test results indicate that the elastic modulus of the coating/steel substrate system continuously decreases with increasing stress level. In the meantime, the critical cracking strain and fracture toughness of the coating/steel substrate system also decrease with increasing stress level. The coupling effect of the external load and corrosive environment greatly accelerate the corrosion process of the coating/steel substrate system.
Degradation Damage of Stress Corrosion in Epoxy Zinc-Rich Coating/Steel Substrate Systems
J. Mater. Civ. Eng.
Zhang, Hua (Autor:in) / Yang, Lei (Autor:in) / Li, Qi Liang (Autor:in) / Huang, Xue Ming (Autor:in) / Cao, Yi Xuan (Autor:in)
01.05.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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