Abstracts of the papers published in Tetsu-to-Hagane Vol. 98 (2012), No. 4

摘要

Adhesion of microorganisms and biofilm formation on the surfaces of some single alloys and plated steels were evaluated in order to estimate the inhibition capability against biofilm formation on these materials. SS400, 304 steel and 430 steel were used for test materials. Ag, Co, Cr, Cu, Ni, Sn and Zn plated steels were also used for test materials, respectively. These specimens were immersed in a cooling water tank of the package type cooling tower for 1 month. Surface observation was carried out before and after immersion test to evaluate inhibition capability against biofilm formation. The chemical composition on the surface of each specimen was also evaluated, because of various elements such as Ca, P and Si are concentrated in biofilm during immersion test.