This core is dedicated to sustainable surface engineering solutions, focusing on environmentally friendly coating technologies and the use of renewable materials. It includes the development of self-healing and recycling strategies, solvent-free powder coating applications, and the replacement of harmful chemicals like Cr(VI). Additionally, it explores bio-based resins, hardeners, and additives, as well as the use of sustainable materials like silk and structural proteins, promoting eco-friendly alternatives in coating and material production.