This　study　explores　the　high-temperature　corrosion　behavior　and　mechanisms　of　laser-clad　Inconel　625　coatings　applied　in　waste　incineration　environments.　Inconel　625　coatings　were　deposited　on　a　substrate　using　laser　cladding　technology,　and　corrosion　tests　were　performed　in　various　high-temperature　acidic　environments.　The　coatings　were　analyzed　using　X-ray　diffraction　(XRD),　scanning　electron　microscopy　(SEM),　energy-dispersive　X-ray　spectroscopy　(EDS),　and　laser　confocal　microscopy　to　investigate　their　microstructure,　composition,　and　corrosion　products.　The　findings　indicate　that　corrosion　weight　gain　was　most　pronounced　in　HCl　environments　at　800　°C　and　HBr　environments　at　600　°C,　underscoring　the　critical　influence　of　temperature　and　acidity　on　reaction　kinetics.　Moreover,　the　corrosion　morphology　was　closely　tied　to　the　environment,　with　distinct　patterns　observed:　pitting　in　HCl,　nodular　growth　in　H2SO4,　and　cracking　and　spalling　in　HF　and　HBr　environments.　High　temperatures　promoted　oxidation　reactions,　resulting　in　the　formation　of　a　dense　oxide　layer　predominantly　composed　of　Cr2O3　and　NiCr2O4,　which　offered　some　degree　of　protection.　However,　pitting　and　cracking　in　acidic　environments　suggested　that　the　protective　oxide　layer＇s　effectiveness　was　compromised　under　extreme　conditions.　This　study　provides　a　comprehensive　understanding　of　the　corrosion　behavior　and　mechanisms　of　Inconel　625　coatings　in　various　acidic　environments　and　high　temperatures　within　waste　incineration　applications.　It　offers　valuable　insights　into　the　impact　of　temperature　and　different　acidic　media　on　corrosion　rates　and　morphologies,　laying　the　groundwork　for　predicting　the　service　life　and　developing　protective　strategies　for　these　materials　in　industrial　settings.　©　2024