Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For corrosion
Patent
1998-05-05
1999-10-26
Bell, Bruce F.
Electrolysis: processes, compositions used therein, and methods
Electrolytic analysis or testing
For corrosion
2057755, 205341, 205342, 324 712, 324700, 324713, G01N 2726
Patent
active
059721987
ABSTRACT:
It is an object of the present invention to provide a corrosion resistance test process, wherein the estimation of the corrosion resistance of an article formed of a metal material and a coating can be carried out synthetically and in a short time. In carrying out a corrosion resistance test, the article is immersed into an electrolytic solution and then, a voltage is applied to the metal material to carry out a metal material corroding step and a coating peeling-off step alternatively and repeatedly. The voltage applied to the metal material is a superimposed voltage Vd+Va resulting from superimposition of a DC voltage Vd and an AC voltage Va. A voltage condition of Vd<0 and Vd+Va>0 is established at the metal material corroding step, while a voltage condition of Vd<0 and Vd+Va<0 is established at the coating peeling-off step.
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Patent Abstracts of Japan, JP-4 076447, Mar. 11, 1992.
Imanaka Tadashi
Kiuchi Keiji
Ohta Hidemichi
Takeuchi Toshihiro
Bell Bruce F.
Honda Giken Kogyo Kabushiki Kaisha
Mitsuba Corporation
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