In-situ process for the monitoring of localized pitting corrosio

Details In-situ process for the monitoring of localized pitting corrosio In-situ process for the monitoring of localized pitting corrosio

1997-05-08

1999-03-30

Tung, T.

Electrolysis: processes, compositions used therein, and methods

Electrolytic analysis or testing

For corrosion

204404, 205777, G01N 2726

Patent

active

058883746

ABSTRACT:
A method and apparatus are provided for monitoring localized pitting corrosion in metal pipes or storage vessels. Electrochemical probes are used for sensing electrochemical noise voltage values and electrochemical noise current values. The root-mean-square electrochemical noise current and voltage values are calculated and stored for the sensed electrochemical noise voltage values and the electrochemical noise current values. The stored electrochemical noise current and voltage values are processed by transforming the stored electrochemical noise current and voltage values into power spectral density data utilizing a fast Fourier transform. A slope of the power spectral density data relative to frequency is calculated. The electrochemical probes include a pair of working electrodes formed of the same material of the monitored metal pipes or storage vessels and a reference electrode formed of a corrosion resistant material. A linear slope of a low-frequency portion of the power spectral density data is calculated by using a least-square method.

REFERENCES:
patent: 4575678 (1986-03-01), Hladky
patent: 5139627 (1992-08-01), Eden et al.
patent: 5151163 (1992-09-01), Miller

Affiliated with

Also associated with

Rating

In-situ process for the monitoring of localized pitting corrosio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with In-situ process for the monitoring of localized pitting corrosio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In-situ process for the monitoring of localized pitting corrosio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1210747