Contributed to the development of Korea science and educational administration, with service on foundation and advancement of KAIST
Received Hoam Prize and Korea Best Scientist and Engineer Awards
Yoon Duk-yong
Honorary Professor, KAIST (1940~)
- Academic background
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1958 ∼ 1962
B.S, Physics, M.I.T.
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1964
M.S, Applied Physics, Harvard University
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1962 ∼ 1967
Ph.D., Applied Physics, Harvard University
- Professional career
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1972 ∼ 2005
Professor, KAIST
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1995 ∼ 1998
President, KAIST
- Awards
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1995.03
Engineering Part, Hoam Prize (Hoam Prize Committee)
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1998
Order of Civil Merit, Camellia Medal
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2004.04
Korea Best Scientist and Engineer Awards (Presidential Prize)
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2005
Aquamarine Stripes Order of Service Merit
the first generation material engineer who laid the foundation of advanced material engineering
After graduation in US and returning back to Korea in 1972, Professor Duk Yong Yoon contributed to foundation of KAIST, in particular department of material engineering (present department of new material engineering and gave great service to development and Korea science and educational administration, serving as the president of KAIST (1995~1998), the full-time deputy head director of POSTECH (2011~2015), the secretary-general of KOSEF (1981~1982), and the chairman of Korean Powder Metallurgy Institute (1996~1997).
In the early 1980s, he published an article in an international journal in the material engineering area for the first time in Korea and then contributed to the internationalization of Korean Science, publishing a total of 150 articles in international journals and producing about 30 doctors. As he allowed the application of his principle in the world as well as in Korea via basic study containing universality, his research achievements are being used also in the geology.
Professor Yoon identified the theory of boundary migration and particle growth by atomic diffusion occurring in the polycrystalline material. He discovered the diffusion induced grain boundary migration (DIGM) and liquid film migration phenomenon between similar particles, which were interested in the global physical metallurgy areas in the 1970s, and proved the M. Hillert’s theory that these phenomena are developed from stress produced in the diffusion of atoms via definitive experiment.
This study was published as an invitation article in the Annual Review of Materials Science(1989) and International Materials Review(1995) and the principle of discontinuous precipitation occurring in heat treatment of alloy was identified. Due to these studies, the atomic diffusion in the polycrystalline could be seen from the new perspective and applied to practical issues including forecasting storage period of nuclear waste.
Identified the principle of interface movement and particle growth of polycrystalline material and built the base of material science research and industry-university collaboration
In addition, he identified the particle growth in polycrystalline structure from the 1980s, which was one of the unsolved problems dating from the times when the primitive men made porcelain (although its observation was made possible after the invention of the microscope). He showed that the abnormal particle growth occurred when the interface or grain boundary between particles and liquid phase had regular structure and normal particle growth occurred well when the interfaces were irregular, and thus proved that the form of particle growth was decided by the regularity of the interface structure.
Due to these results, it made possible to control particle growth and apply the principal to the growth of mono-crystal structure. Besides, he identified the phenomenon that the pores were filled with the liquid phase in the liquid sintering and applied the principle to the development of anti-tank tungsten heavy alloy.
In addition, he performed studies on high-temperature superconductivity, Ni derived super-alloy, and diamond formation in the climate and published several tens of articles in the international scientific journals. He presented these research results 3 times in the Gordon Conference, US and provided invitation seminars in several international conferences, universities (M.I.T, Harvard University, and University of Michigan) and research institutes (Max Planck Institute, General Electric Research Center, and NIST). With the acknowledgement of these achievements, Professor Yoon received Hoam Prize (1995) and Korea Best Scientist and Engineer Awards (2004) and elected as a member of the National Academy of Sciences in 2005.