Research Interests:
Thermal Barrier Coatings and Oxidation Resistant Metallic Coatings, Multicomponent Diffusion under Multiple Gradients including Phase-Field Modeling, High Temperature Structural Alloys, Al- and Mg-base Alloys and Composites, Processing, Microstructure and Property Relations in Materials, Multiscale Materials Characterization.
Degrees:
Ph.D., Materials Science and Engineering, Purdue University, 12/98
M.S., Materials Science and Engineering, Worcester Polytechnic Institute, 05/93
B.S. (Honors), Mechanical Engineering, Worcester Polytechnic Institute, 05/91
Recent Publications:
B. Yao, T. Patterson, C. Hofmester, Y.H. Sohn, M. van den Bergh, C. Smith, T. Delahanty, K. Cho, “Microstructural Features Influencing the Strength of Lightweight Nanoengineered Trimodal Aluminum Composites,” Composites A, in Press, 2010.
P. Mohan, T. Patterson, Y.H. Sohn, “Environmental Degradation of Thermal Barrier Coatings and Mitigation by Electrophoretically Deposited Overlay,” Journal of Thermal Spray Technology, Vol. 19 (2010) pp. 156.
R.R. Mohanty, J. Guyer, Y.H. Sohn, “Diffusion Under Temperature Gradient: A Diffuse Interface Study,” Journal of Applied Physics, Vol. 106 (3) 2009, 136915.
E. Perez, A. Ewh, J. Liu, B. Yuan, D.D. Keiser, Y.H. Sohn, “Transmission Electron Microscopic Study of Phase Constituents in Al-rich U-Mo-Al Alloys,” Journal of Nuclear Materials, Vol. 394 (2009) pp. 160-165.
P. Mohan, B. Yao, T.J. Patterson, Y.H. Sohn, “Electrophoretically Deposited Alumina as Protective Overaly for Thermal Barrier Coatings Against CMAS Degradation, Surface and Coatings Technology, Vol. 204 (2009) pp. 797-801.
R. Mohanty, A. Leon, Y.H. Sohn, “Phase Field Simulation of Interdiffusion Microstructure Containing fcc-γ and L12-γ' Phases in Ni-Al Diffusion Couples,” Computational Materials Science, Vol. 43 (2008) pp. 301-308.
N. Garimella, M. Ikeda, M. Ode, H. Mukarami, Y.H. Sohn, “Effects of Ternary Alloying Addition of Ir and Ta on Interdiffusion of L12-Ni3Al at 1200ºC,” Intermetallics, Vol. 16 (2008) pp. 1095–1103.
P. Mohan, B. Yuan, V.H. Desai, Y.H. Sohn, “Degradation of Yttria Stabilized Zirconia Topcoat in Thermal Barrier Coatings by V2O5 and P2O 5” Journal of the American Ceramic Society, Vol. 90 (2007) pp. 3601-3607.
J.W. Byeon, J. Liu, M. Hopkins, W. Fischer, N. Garimella, K.B. Park, M.P. Brady, M. Radovic, T. El-Raghy, Y.H. Sohn, “Microstructure and Residual Stress of Alumina Scale Formed on Ti2AlC at High Temperature in Air,” Oxidation of Metals, Vol. 68 (2007) pp. 97-111.
Y.H. Sohn, A. Puccio, M.A. Dayananda, “Diffusion Structures and Diffusion Paths of Selected Multiphase Couples in the Fe-Ni-Al System,” Metallurgical and Materials Transactions A, Vol. 36A (2005) pp. 2361-2370.
Scientific and Professional Societies:
American Society of Materials (ASM) International
Secretary of ASM Alloy Phase Diagram Committee
The Minerals, Metals and Materials Society (TMS)
Member of High Temperature Materials Committee and Nuclear Materials Committee
American Vacuum Society (AVS)
Chair of Symposium on “Coatings for Use at High Temperature” during International Conference on Metallurgical Coatings and Thin Films (ICMCTF-2011 and 2012)
The American Ceramic Society (ACERS)
American Society of Mechanical Engineers (ASME)
American Society of Engineering Education (ASEE)
Honors and Awards:
Faculty Early CAREER Award and Grant, 2003-2008, Division of Materials Research, National Science Foundation
Teaching Incentive Award, 2007, University of Central Florida
Research Incentive Award, 2006, University of Central Florida
Distinguished Researcher of the Year Award – Institute and Centers, 2005, University of Central Florida
1997 and 1998 Magoon Awards for Excellence in Teaching, Purdue University, West Lafayette, IN, USA, (Award for the best teaching assistant voted by undergraduate students)
