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Combating Industrial Corrosion - Advanced Techniques
for Corrosion Testing and Monitoring (2 days)

This course covers 9 easy to follow electrochemical techniques for rapid and accurate corrosion measurements both on stream and off stream.

Course Objective     
CourseContents
Who Should Attend  
Course Lecturer

Created in July 1995 last updated 24 July 1998

COURSE OBJECTIVE

The enormous cost of corrosion to the industry can be significantly reduced through effective corrosion monitoring and testing. This course aims to present to the technologists and engineers how existing techniques can help them solve many of their most tedious and persistent corrosion problems. The course will provide the participants with a thorough understanding of the basic principles and the practical applications of some simple yet powerful techniques in corrosion monitoring and testing.

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COURSE CONTENT

During the late 70's and early 80's, industrial technologists and engineers began to realize that electrochemical (ECHEM) instruments could help them solve many of their most tedious and persistent corrosion problems. When manufacturers began to produce more compact and easy to use instruments, they became even more popular. This course will cover ECHEM techniques for routine applications such as rapid screening for materials selection, failure analysis, evaluation of paintings /coatings/electroplating/inhibitors, determination of corrosion rate, pitting potentials, protection potentials and measurement of corrosion behaviour diagrams. A range of techniques for on-line monitoring of industrial processes will also be included. Following is an outline of the contents:

1. Basics of Corrosion Measurements
   • terminology and conventions
   • test cell and instrumentation
   • electrochemistry and corrosion
   • measurements of corrosion behaviour diagrams
   • polarisation resistance measurements
   • Tafel plots
   • potentiodynamic polarisation measurements
   • galvanodynamic polarisation measurements
   • critical pitting potential/temperature measurements
   • protection potential measurements
   • detecting sensitization of stainless steels
   • basics of electrochemical impedance spectroscopy (EIS)
2. On-Line Corrosion Monitoring
   • WHY use on-line corrosion monitoring
   • diagnosis -quality control
   • warning of unexpected failures
   • process control -determine maintenance
   • determine useful remaining life
   • direct methods of on-line corrosion monitoring
   • on-line monitoring system components and functions
   • fixed electrical resistance process probe
   • retractable process probe
   • portable electrical resistance instrument
   • continuous instantaneous corrosion rate instrument
   • principle on-line corrosion monitoring methods
   • WHERE & WHEN to use it
   • HOW much does it cost
3. Application of Electrochemical Techniques
   • degradation of organic coatings
   • DC methods
   • AC methods
   • evaluation of corrosion inhibitors
   • inhibiting efficiency
   • evaluation of coatings/electroplating
   • coating efficiency
   • porosity
   • water uptake
   • assessment of coating defects on buried pipelines

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WHO SHOULD ATTEND

This course has been structured in such a way that it is particularly suited for the technologists and engineers who are interested in applications of the state of the art technology in corrosion monitoring and testing to solving their most tedious and persistent corrosion problems. It is also suited for technical personnel whose work involves any of the following: materials evaluation, failure analysis, quality assurance, process control and maintenance.

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