Corrosion Behavior of Amorphous Co69Fe4.5Cr1.5Si10B15 Alloy
Keyword(s):
Abstract The corrosion behavior of amorphous Co69Fe4.5Cr1.5Si10B15 alloy ribbon was investigated using potentiodynamic polarization tests in 0.001 M sulfuric acid (H2SO4) solution, 0.01 M ∼ 0.09 M sodium chloride (NaCl) solution, and solutions at pH levels from 3 to 13 made by mixing hydrochloric acid (HCl) and sodium hydroxide (NaOH). The corrosion potential decreased and the corrosion rate increased with an increase in solution temperature. The influence of solution temperature was more significant in H2SO4 solution than in NaCl solution. The amorphous Co69Fe4.5Cr1.5Si10B15 alloy ribbon showed passivity in solution with a pH higher than 7, and the corrosion rate was minimized at a pH of 9.
2020 ◽
Vol 1
(101)
◽
pp. 5-14
Keyword(s):
2009 ◽
Vol 620-622
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pp. 153-156
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