Materials Performance

OCT 2018

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

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Special Lectures WILLIS RODNEY WHITNEY AWARD LECTURE Tuesday, March 26 | 11:15 a.m. The Whitney Award recognizes public contributions to the science of corrosion. FRANK NEWMAN SPELLER AWARD LECTURE Wednesday, March 27 | 11:15 a.m. The Speller Award Lecture recognizes contributions to the practice of corrosion engineering. The Whitney and Speller Award lectures are selected in late 2018. For a complete listing of the award winners, see the February 2019 issue of Materials Performance or visit www.nace.org. PLENARY LECTURE Born in Thames, New Zealand, December 7, 1943, Professor Digby D. Macdonald gained his B.Sc. and M.Sc. degrees in chemistry at the University of Auckland, New Zealand, and his Ph.D. degree in chemistry from the University of Calgary in Canada. He has served as assistant research officer at Atomic Energy of Canada Ltd.; lecturer in chemistry at Victoria University of Wellington, New Zealand; senior research associate at Alberta Sulfur Research; honorary associate professor at the Chemistry Department of the University of Calgary; director and professor of the Fontana Corrosion Center, Ohio State University; vice president, Physical Sciences Division, SRI International, Menlo Park, California; and professor and later distinguished professor of Materials Science and Engineering at Pennsylvania State University from 1991 to the end of 2012. He is currently a professor in residence with the Departments of Materials Science and Engineering and Nuclear Engineering at the University of California at Berkeley. Dr. Macdonald has published about 1,000 papers in peer-reviewed scientific journals, books, and conference proceedings, plus four books, one of which (Transient Techniques in Electrochemistry) established an important area of electrochemical research, and has 10 patents and numerous invention disclosures credited to his name. His professional competence lies in the fields of electrochemistry, corrosion science, battery science and technology, thermodynamics, chemical kinetics, high-temperature aqueous chemistry, nuclear power technology, energy conversion technology, and physical chemistry. Finally, under his tutelage, more than 150 students have graduated with advanced degrees in chemistry and materials science and engineering over the past four decades. Of particular importance is that Dr. Macdonald is the originator of the modern theory of passivity in the form of the Point Defect Model and has been a pioneer of electrochemical impedance spectroscopy, particularly for corrosion reaction mechanistic analysis. How Well Can We Predict Localized Corrosion? Various forms of localized corrosion, including pitting corrosion, crevice corrosion, stress corrosion cracking (SCC), and corrosion fatigue (CF), are responsible for the majority of corrosion-related failures in industrial, military, and infrastructural systems. These forms of corrosion are often referred to as being "insidious," because they often result in failures with little forewarning and until recently have been difficult to predict. However, all localized corrosion processes comprise three distinct stages: initiation, propagation, and death and each of these stages in the life of a single event are now amenable to deterministic prediction. Although these three stages occur sequentially for a single event, the events tend to occur in parallel for a population in a "progressive nucleation, growth, death (PNGD)" scenario that is reminiscent of the demographics of a population of living entities (e.g., human beings). The evolution of such damage is best described by a "Damage Function (DF)" in a protocol termed "Damage Function Analysis (DFA)." The DF is a histogram of the number of events vs. event depth and each DF contains information on each stage of a single event and on the PNGD of the population, such that the depth of the deepest event can be predicted. During this plenary lecture, I will review that basis of DFA with emphasis on the scientific basis of each stage and I will identify the overarching principles at play. I will then illustrate the application of DFA to a number of practical problems, such as pitting in oil and gas pipelines, SCC of stainless steels in the coolant circuits of nuclear power reactors, and CF in aerospace aluminum alloys. Digby D. Macdonald | Tuesday, March 26 | 8-9 a.m. A34 OCTOBER 2018 W W W.MATERIALSPERFORMANCE.COM

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