Antibacterial properties and MIC resistance of silver alloyed AISI type 304 stainless steel and its welds

摘要

The bacterial adhesion and MIC on silver contained stainless steels were studied in the laboratory in comparison with AISI type 304 SS (control). Both base metal and welds were tested. The area of bacterial adhesion was found to be significantly lesser in case of silver contained coupons compared to control both in the base metals and welds. Free Corrosion potential showed ennoblement in the case of control coupons while not much fluctuation was seen in the silver contained coupons. SEM observation showed pitting corrosion by 30 days in control coupons whilst the appearance of pits were near nil on silver alloyed and very less on silver coated coupons. The results thus suggest that silver contained 55 possess antibacterial properties and are resistant to MIC as compared to 304 SS.