Progressively advantageous long-term corrosion profile of Mo over Mg, Zn, and Fe from the perspective of biodegradable metals

Long-term corrosion profile of molybdenum was studied in three different simulated body fluids up to 28 days, compared with magnesium, zinc, and iron from the perspective of biodegradable metals (bio-metals). Their corrosion rate , mode, products and surface characteristics were comprehensively fathomed. Strikingly, Mo showed progressively advantageous long-term corrosion behavior with the smallest corrosion rate, and most importantly, more uniform mode, as compared with the other three bio-metals. It also performed bilaterally under the simulated inflammatory and bovine serum protein added conditions, with different corrosion progressions. These findings provide an optimistic outlook in opting molybdenum as a new type of bio-metal. • Long-term corrosion profile of Mo as new type of bio-metal compared to Mg, Zn & Fe. • Mo exhibited lowest corrosion rate with more uniform mode vs. the other 3 bio-metals. • In inflammatory case, its corrosion accelerated albeit still uniform & palliated by BSA. • These findings help better-understand corrosion of Mo as bio-metal & optimistic outlooks.