报告题目：Radiation Assisted Chemical and Materials Research.
Part II: Radiation Induced Corrosion
报告人：J.C. Wren
Department of Chemistry
Western University
London, Ontario, Canada N6A 5B7
报告时间：2012年3月9日（星期五）上午 9：00
报告地点：独墅湖校区907号楼1445室
欢迎感兴趣的老师和学生参加！
Wren教授个人简历：
Jungsook Clara Wren obtained her B.Sc. at Sogang University in Seoul, Korea in 1972, and her Ph.D. at Kansas State University in the U.S. in 1982. Following her graduate work, she moved to Canada to become an NSERC (Natural Science and Engineering Research Council, Canada) postdoctoral fellow at AECL (Atomic Energy of Canada Limited), the national nuclear research laboratory.
She continued on at AECL and quickly rose to become a principal scientist, a level achieved at AECL by only a select few outstanding researchers. During her 20 years at AECL she led a research group of 10-15 scientists and managed multi-million dollar industry-supported research programs in the area of nuclear reactor safety. While at AECL, she received AECL's Award of Excellence and gained international renown in the study of radioactive iodine chemistry. She chaired various international workshops and served in a technical advisory role at meetings sponsored by the OECD/NEA (Organization of Economic Cooperation and Development/Nuclear Energy Agency) and the IAEA (International Atomic Energy Agency).
In 2004, she left AECL to pursue an academic career as a full professor in the Department of Chemistry at the University of Western Ontario, Canada. In 2005 she was awarded a 5-year term NSERC-AECL Industrial Research Chair in Radiation-Induced Processes in Nuclear Environments (the chair was later renewed for a 2nd term). Within her short tenure at Western she has established a new, productive laboratory and currently supervises 2 M.Sc. and 7 Ph.D. students and 2 post-doctoral fellows, and has supervised 2 Masters and 2 Ph.D. theses and 4 PDFs.
Jungsook Clara Wren's research interests are in probing the mechanisms and kinetics of interfacial and surface reactions under the energetic and transient environments created by ionizing radiation. These interests include steel and cobalt alloy corrosion and electrochemistry, metal oxide colloid formation, micelle formation and phase mixing in water/ionic liquid systems, and water radiolysis chemistry. Her work has led to over 90 papers in refereed scientific journals and proceedings, 102 propriety technical reports, 110 conference presentations, and 46 invited lectures.
报告摘要：
Ionizing radiation can drive reactions involving water-solid and water-liquid interfacial mass and charge transfer, such as colloid (or nanoparticle) formation and corrosion. In my first talk（2012.3.8 医学部401三楼会议室）, I present the results of work on water radiolysis chemistry and the formation of metal oxide colloids and micelles in water-ionic liquid systems. The work on water radiolysis chemistry provides a basis for interpretation of the impacts of radiolysis on more complex systems. Our work on metal oxide colloid formation shows how radiolysis can interact with transition metal ions in solution whose oxidation state can change.
I will present some findings from our studies on radiation-induced corrosion. This work shows how water radiolysis can affect the nature of the oxide film that forms and grows on steel surfaces (carbon steel and stainless steel). The oxide film formation, and the corrosion rate, are affected by the redox active species generated by radiolysis and the oxidation/reduction of metal ions in solution and at the metal oxide/water interface. We have also studied the effects of solution pH and temperature on the corrosion process in the presence of radiation.
