Events

Seminar on Developments in Corrosion Testing and Failure Analysis

Date: 06 Sep 2010 - 06 Sep 2010

Venue: SIMTech Auditorium, Tower Block, Level 3

Introduction
This seminar is co-sponsored by ITS Science and Medical specifically for participants working in the areas of surface engineering, corrosion and electrochemical testing, materials testing and characterisation. 

Abstracts

Corrosion, Why it is important? by Associate Professor Daniel Blackwood, National University of Singapore (NUS)
The cost of corrosion in an industrialised nation runs at about 3-4% of GDP and affects all industrial societies. A description of some of the causes and who pays will be provided. The major societies for corrosion professionals will be introduced: National Association of Corrosion Engineers (USA) and Corrosion Association Singapore.

Development of Accelerated Atmospheric Testing: from Salt Spray Testing to Cyclic Test Methods by Dr Vladimir Kucera, Swerea/KIMAB, Sweden
Rapid technical development creates a demand for development of new accelerated corrosion test methods. In the field of atmospheric testing this has resulted, for example, in development of different salt spray methods with increasing corrosivity. There is, however, a risk that increased acceleration will change the corrosion mechanism and lead to erroneous results. The widely used neutral salt spray test can serve as an example of a method which can give misleading results. Developments over the last decades, lead mainly by the car industry, have resulted in new cyclic test methods with short intervals of salt spray and dry and wet periods. Also for sulphur polluted atmospheres, test methods with high SO2 concentrations have been replaced by low polluted atmospheres using different pollutants. Another means of acceleration is periodic spraying of specimens with a salt solution on test sites (scab testing). The car industries also use proving grounds where cars are driven on different types of roads and exposed to salt spray and warm/humid air exposure. The final answer is, however, obtained after prolonged use on roads. One possibility to reduce testing time is the systematic investigation of crevices and joints on 2-4 years old collision damaged cars. The development of different test methods by the automotive industries in different countries illustrates the need and importance of standardisation. The ISO TC 156 has adopted several new test methods and developed a system using reference specimens for comparing the corrosivity of individual test methods and for calibration of test chambers.

Introduction to Swerea KIMAB, Stockholm and Institute de la Corrosion, Brest by Dr Vladimir Kucera, Swerea/KIMAB, Sweden
The present institute Swerea KIMAB was created in 2005 by merging two institutes with old traditions: the Institute of Metals Research which was the oldest Swedish industrial sector research institute, founded in 1921, and the Swedish Corrosion Institute having its roots in 1932, and founded by the Corrosion Committee of the Academy of Engineering Science. By merging the two fields of material research, a leading institute has been developed within corrosion and metals research in Europe having 130 employees. Research and development work takes place in close collaboration with Swedish and international companies within the steel, metals, electronics, engineering, paper, vehicle, manufacturing, plastics and power industries. Swerea KIMAB’s wholly owned subsidiary, Institut de la Corrosion (IC), is located in Brest, France. The Institute is primarily aimed at research, testing and commissions that are oriented towards the transportation, oil, gas and construction industries.

Application of Conventional and Modern Electrochemical Techniques for Corrosion Evaluation– Testing and Research Facilities in SIMTech by Dr Sudesh Wijesinghe, SIMTech, A*STAR
SIMTech has a range of instruments for corrosion investigation and characterisation as well as for conducting fundamental corrosion studies. The available facilities and capabilities will be presented. Facilities include a potentiostat/impedance analyser system, standard electrochemical cells for diverse applications, salt spray /weathering chamber, scanning vibrating electrode technique (SVET), with localised electrochemical impedance spectroscopy (LEIS) etc.  

Scanning Electrochemical Techniques For Corrosion Imaging by Associate Professor Daniel J Blackwood, NUS
Corrosion of metals and alloys involves both oxidation and reduction processes, which occur at distinct anodes and cathodes respectively. To complete the electric circuit ionic currents flow through the electrolyte between the anodes and cathodes. These currents can be detected by scanning a small probe across the metal surface allowing a corrosion contour map to be determined. The resolution of the map can be improved by vibrating the probe, as in the as the scanning vibrating electrode technique (SVET). The ability to image a corroding surface at the micron level is practically useful for investigating localised pitting corrosion and defects in coating.  The power of the technique can increased further by combining it with localised electrochemical impedance spectroscopy (LEIS) allowing corrosion rates at specific locations on the surface to be determined.  Examples of the application of SVET and LEIS to both weld corrosion and protective coatings will be presented. A brief overview of the electrochemical fundamentals that underlie corrosion will be given which will allow participants to understand the principle of operation behind potential and current mapping techniques. Details on electrochemical aspects (anodes/cathodes), galvanic, Tafel plots, EIS, SVET/LEIS will be discussed. 
 

About the Speakers
Associate Professor Dan Blackwood obtained his PhD degree in Electrochemistry  (University of Southampton 1986). He did his postdoctorate at the University of Utah before receiving an Alexander von Humboldt fellowship in Munich. In 1990 if he joined the UKAEA at Harwell Laboratories as a project manager in the aqueous corrosion section. Since 1996 he has been in the Department of Materials Science & Engineering, National University of Singapore where his current research area is in the fields of corrosion and semiconductor electrochemistry. He is the current treasurer of the Corrosion Association Singapore.   

Dr Vladimir Kucera obtained his PhD degree in corrosion science at the Chemical Technical University in Prague in 1966. He did his post doctorate at the Royal Institute of Technology in Stockholm. In 1969 he joined the Swedish Corrosion Institute in Stockholm as researcher, becoming director of research in 1976 and finally deputy managing director in 1999. Since 2002 he has been acting as scientific consultant. Special research interests are in the field of atmospheric corrosion and the effects of pollution and climate on technical materials and objects of cultural heritage and in the field of corrosion and corrosion protection of motor vehicles. He was the co-ordinator of several international projects e.g. within UN ECE and EU research programmes and  chairman and plenary lecturer on numerous national and international congresses. He is also a member of standardisation committees ISO TC 156 and CEN TC 262 concerning classification of corrosivity of atmospheres and corrosion testing. In 2008 he was awarded the International Corrosion Council’s Pourbaix award for promotion of international co-operation in the field of corrosion. 

Dr Sudesh Wijesinghe is an Assistant Research Scientist in the Surface Technology Group (STG) of Singapore Institute of Manufacturing Technology (SIMTech). Sudesh has obtained his PhD from the Department of Materials Science, National University of Singapore in the area of electrochemistry and corrosion in 2005. He served as a post doctoral research fellow in the same department until he joined SIMTech in 2008. His research interests are in the area of electrochemistry and corrosion.  

Programme
8.30am      Registration & Networking
9.00am      Welcome Address by Dr Andrew Soutar, Deputy Group Manager, Surface Technology Group
9.15am      Corrosion, Why It Is Important? (Economics, case studies, NACE, Coatings Inspectors, ICC Perth)
                  Associate Professor Daniel J Blackwood, Department of Materials Science and Engineering, NUS
9.30am      Corrosion Testing: Principles, Applications and Development of Accelerated Atomspheric Testing: 
                  From Salt Spray Testing to Cyclic Test Methods by Dr Vladimir Kucera, Swerea/KIMAB, Sweden
10.30am    Coffee break & Networking
11.00am    Introduction to Swerea KIMAB, Stockholm and Institute de la Corrosion, Brest
                 by Dr Vladimir Kucera, Swerea/KIMAB, Sweden
11.30am    Application of Conventional and Modern Electrochemical Techniques for Corrosion Evaluation - Testing
                 and Research Facilities in SIMTech by Dr Andrew Soutar / Dr Sudesh Wijesinghe
11.45am   Scanning Electrochemical Techniques for Corrosion Imaging by Associate Professor Daniel J
                 Blackwood, Department of Materials Science and Engineering, NUS
12.30pm   Lunch & Networking
1.30pm     End 

Who Should Attend
R&D Managers, engineering and technical staff, academic staff and students working in the areas of surface engineering, corrosion and electrochemical testing, materials testing and characterisation.

Registration
RegistrationPre-registration for the seminar is necessary. Seats are available on a first-come, first-served basis. To reserve a place, please register online.

Contact Us
For technical enquiries: 
Dr Andrew Soutar, Email: soutar@SIMTech.a-star.edu.sg
Dr Sudesh Wijesinghe, Email: sudeshw@SIMTech.a-star.edu.sg

For general enquiries:
Samantha Sukiyama Chan, Email: chanskf@SCEI.a-star.edu.sg