Damage assessment of the corrosion-resistant performances for organic coating systems after accelerated tests using analytic hierarchy process. (November 2018)

• Record Type: Journal Article
• Authors: Yong, Xingyue; Hu, Xiyan; Jiang, Lin; Ma, Qingfei; Chen, Rihui
• Is Part Of: Engineering failure analysis. Volume 93(2018)
• Page Start: 1
• Page End: 12
• Publication Date: 2018-11
• Subjects: Coating failures -- Simulation tests -- Failure modes -- Corrosion -- Damage assessment; System failures (Engineering) -- Periodicals; Fracture mechanics -- Periodicals; Reliability (Engineering) -- Periodicals; Pannes -- Périodiques; Rupture, Mécanique de la -- Périodiques; Fiabilité -- Périodiques; Fracture mechanics; Reliability (Engineering); System failures (Engineering); Periodicals; Electronic journals; 620.112
• DOI: 10.1016/j.engfailanal.2018.06.015
• Languages: English
• ISSNs: 1350-6307

Abstract

Abstract: It is very significant to comprehensively evaluate corrosion-resistant levels of an organic coating system after accelerated tests or outdoor exposures. In this study, the comprehensive evaluation model of the tested or exposed organic coating systems was established with Analytic Hierarchy Process (AHP) based on their eight types of the often observable and measureable failure modes, and that this model was verified by the electrochemical impedance data based on their electrochemical impedances spectroscopies (EIS). The corrosion-resistant performance levels of the tested or exposed organic coating systems were defined based on the comprehensively evaluated values. The relationship of their comprehensively evaluated values with the electrochemical impedances of the tested or exposed organic coating systems was proposed. Finally, this model was used to assess the corrosion-resistant performances of the coated aluminum alloys with three types of availably commercial organic coatings after accelerated tests. The results showed that the comprehensive evaluation model was verified to be reasonable to straightforwardly and comprehensively assess the corrosion-resistant performance levels of the tested or exposed organic coating systems after accelerated tests in a laboratory which simulate different corrosive atmospheric environments. Graphical abstract: Unlabelled Image Highlights: Comprehensively evaluating model of organic coating systems was established with AHP. This model was verified to be reasonable by the electrochemical impedance data based on EIS. Corrosion-resistant performance levels were defined based on the evaluated values. Relationship of the evaluated values with the electrochemical impedance was proposed.