RT Journal Article SR Electronic A1 Kuśmierczak, Sylvia A1 Svobodová, Jaroslava T1 Microscopic Evaluation of Protective Coating by Coated Sheets after Corrosion Load JF Manufacturing Technology Journal YR 2012 VO 12 IS 2 SP 151 OP 157 DO 10.21062/ujep/x.2012/a/1213-2489/MT/12/2/151 UL https://journalmt.com/artkey/mft-201202-0013.php AB Introduction into problems - The aim of the paper was microscopically analyze protective layer by coated sheets after corrosion loading which were pre-treated by various ways. The samples were divided into 4 groups according to the pretreatment type and duration of corrosion load. After a corrosive effect on the corrosion chamber the protective layer was subjected to microscopic evaluation. For samples of group I and IV have to degrade the protective layer and the formation of corrosion products on the base material which causes degradation of the protective layer and shorten its life. For samples of group II and III microstructural analysis showed good condition of the painted surface layer and the base material showed no presence of corrosion products. It again confirms the need for compliance of technological conditions for the pretreatment of the surface particularly in the application of modern less aggressive means.