Abstract
The scientific article is devoted to the study and application of micro-arc oxidation technology for the restoration of the working surfaces of truck pistons. The study includes an analysis of the physical and chemical processes occurring during microarc oxidation of aluminum alloys from which the pistons are made. The physical impact of MAO promotes the formation of a strong and stable oxide layer, leading to improved surface morphology and closure of microcracks. The results obtained confirm that this technology promotes the formation of hard coatings. The presence of microcracks and surface defects on the original surface of the aluminum alloy caused by operation is noted. After applying the micro-arc oxidation procedure, significant improved surface morphology, reduction of microcracks and removal of defects are visible, indicating the high efficiency of the process. The use of micro-arc oxidized coatings in mechanical engineering promises to increase the durability and efficiency of freight vehicles, as well as reduce repair and maintenance costs. This research represents an important contribution to the field of technological solutions for the remanufacturing of vehicle parts, providing promising prospects for industrial applications.