The　corrosion　behavior　of　synthetic　Cu–Sn　bronze　alloys　with　six　different　Sn　contents　was　examined　through　an　electrochemical　test　and　a　synthetic　test　in　a　simulated　corrosive　medium.　The　mechanism　of　corrosion　and　the　morphology　of　the　corroded　surfaces　were　characterized　through　field　emission　scanning　electron　microscopy　equipped　with　energy-dispersive　spectroscopy.　At　the　corrosion　potential,　the　corrosion　behavior　appears　to　be　determined　by　the　charge　transfer　step　and　the　diffusion　process.　It　was　found　that　the　bronze-IV　(Cu–26.8Sn)　specimen　exhibited　the　best　corrosion　resistance,　as　evidenced　by　a　low　corrosion　current　density　and　a　high　impedance.　This　improvement　resulted　from　an　increase　in　the　content　of　the　Cu–Sn　solid　solution　in　the　alloy,　which　was　conducive　to　forming　a　relatively　more　protective　passive　film　on　the　surface　of　the　bronze　alloy.　This　finding　would　be　valuable　in　the　anticorrosion　protection　of　archeological　artefacts　after　their　excavation.　©　2019　WILEY-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim