ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In order to improve corrosion resistance of galvanized steel, a novel cerium-phytic acidpassivation treatment was studied. The process of cerium-phytic acid passivation on galvanizedsteel was optimized. The corrosion resistance of cerium-phytic passivated samples was tested bydropping test and weight loss test. The electrochemical behaviors of cerium, phytic acid andcerium-phytic acid passivated samples in 0.5 mol/L NaCl solution were investigated by polarizationcurve and AC impendence spectroscopy, respectively. The corrosion equivalent circuit establishedaccording to impedance characteristics. The corrosion current density of the samples were treatedby cerium and phytic acid was 8.52 × 10-5 A/cm2 and 9.39 × 10-5 A/cm2, respectively, However, thesamples were passivated by cerium-phytic acid the corrosion current density decreased to 1.76 ×10-5 A/cm2, respectively. The test results showed that cerium-phytic acid passivated samplesexhibited better corrosion resistance than that of cerium or phytic acid passivated sample under thesame test conditions
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.228.pdf
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