Menu
Search
Filters
Close
Menu

00430 Using Electrochemical Noise to Obtain More Information From Conventional Corrosion Test Methods

Picture for 00430 Using Electrochemical Noise to Obtain More
Available for download
Product Number: 51300-00430-SG
ISBN: 00430 2000 CP
Author: J. Goellner, A. Burkert, A. Heyn, J. Hickling, H. U. Vogler
$0.00
$20.00
$20.00
Within corrosion research, the analysis of electrochemical noise offers a simple, sensitive and virtually non-destructive measuring technique for assessment of the corrosion susceptibility of metallic materials and for the investigation of corrosion processes. The present status of knowledge concerning noise diagnostics in corrosion processes permits the application of this method not only to experimental tasks in the laboratory, but also to special problems in the context of practical corrosion monitoring. Furthermore, specific advantages of the technique enable its use to an increasing extent in supporting or improving conventional corrosion testing. The advantages here include obtaining additional information and shortening testing times (together with associated savings in resources such as manpower, energy, chemical reagents, etc.), thus resulting in state-of-the art corrosion testing. In this paper, it is shown, with the aid of three examples taken from the routine work of a corrosion laboratory, how conventional testing methods and investigation procedures can be enriched by the application of electrochemical noise techniques. In the first example, current noise measurement using a zero-resistance ammeter is used to investigate the development of corrosion over time during salt-spray testing, thus making assessment of the test samples better and more quantifiable. During potentiostatic experiments, in the second example, additional noise diagnostics permits conclusions as to critical regions of potential and chloride concentration, as well as the effect of inhibitors, to be drawn within the shortest possible testing period. Detection of the initiation processes of corrosion (e.g. incipient pitting) is not possible simply using the conventional method of total current measurement. In the third example, the testing requirements for the determination of critical pitting temperatures can be reduced considerably and, in particular, the evaluation of the noise signals can be carried out so as to eliminate to a large extent both external and subjective influences. Furthermore, other important information, such as the incipient pitting and repassivation behaviour of the materials, can also be obtained. Keywords: electrochemical noise, noise diagnostics, corrosion testing, salt-spray testing, potentiostatic methods, pitting.
Within corrosion research, the analysis of electrochemical noise offers a simple, sensitive and virtually non-destructive measuring technique for assessment of the corrosion susceptibility of metallic materials and for the investigation of corrosion processes. The present status of knowledge concerning noise diagnostics in corrosion processes permits the application of this method not only to experimental tasks in the laboratory, but also to special problems in the context of practical corrosion monitoring. Furthermore, specific advantages of the technique enable its use to an increasing extent in supporting or improving conventional corrosion testing. The advantages here include obtaining additional information and shortening testing times (together with associated savings in resources such as manpower, energy, chemical reagents, etc.), thus resulting in state-of-the art corrosion testing. In this paper, it is shown, with the aid of three examples taken from the routine work of a corrosion laboratory, how conventional testing methods and investigation procedures can be enriched by the application of electrochemical noise techniques. In the first example, current noise measurement using a zero-resistance ammeter is used to investigate the development of corrosion over time during salt-spray testing, thus making assessment of the test samples better and more quantifiable. During potentiostatic experiments, in the second example, additional noise diagnostics permits conclusions as to critical regions of potential and chloride concentration, as well as the effect of inhibitors, to be drawn within the shortest possible testing period. Detection of the initiation processes of corrosion (e.g. incipient pitting) is not possible simply using the conventional method of total current measurement. In the third example, the testing requirements for the determination of critical pitting temperatures can be reduced considerably and, in particular, the evaluation of the noise signals can be carried out so as to eliminate to a large extent both external and subjective influences. Furthermore, other important information, such as the incipient pitting and repassivation behaviour of the materials, can also be obtained. Keywords: electrochemical noise, noise diagnostics, corrosion testing, salt-spray testing, potentiostatic methods, pitting.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 00434 THE INS AND OUTS OF PIPELINE CLEANERS:
Available for download

00434 THE INS AND OUTS OF PIPELINE CLEANERS: TESTING AND EVALUATION FOR CHEMICAL CLEANERS

Product Number: 51300-00434-SG
ISBN: 00434 2000 CP
Author: Samuel Campbell
$20.00
Picture for 00437 MODIFIED CITROSOLV PROCESS FOR PRE-
Available for download

00437 MODIFIED CITROSOLV PROCESS FOR PRE-COMMISSION CLEANING OF NEW DGA PLANTS

Product Number: 51300-00437-SG
ISBN: 00437 2000 CP
Author: Roger S. Sarathy and Abdullah I. A1-Mahrous, Ken Moody
$20.00
Picture for 00446 REFINERY CHEMICAL CLEANING: CRITERIA FOR
Available for download

00446 REFINERY CHEMICAL CLEANING: CRITERIA FOR DETERGENT SELECTION

Product Number: 51300-00446-SG
ISBN: 00446 2000 CP
Author: Chris Spurrell, Mialeeka Bibbs
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support