Korozní odolnost štítků z oceli CrNi18-10 gravírovaných laserem

Abstract

This diploma thesis deals with the study of corrosion resistence of alser engraved labels made of CrNi18-10 steel. The theoretical part is focused on the description of stainless steels and elements influencing the structural properties of austenitic stainless steels. Passivity, types of corrosion, laser enraving and accelerated corrosion testing are also described. The experimental part is focused on determining the chemical composition and metallographic analysis of the studied engraved labels. The experimental part also deals with the effect of laser engraving on the hardness and on the change of electrochemical properties of CrNi18-10 (1.4301) steel labels.