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  1. No Access

    Chapter and Conference Paper

    Experimental Study on Deformation Recovery and Residual Strength of FRP RC Beams

    Many researches on behavior of the structures which were externally strengthened with FRPs have been conducted. However, researches on time-dependent behavior have not been conducted yet. In order to provide i...

    M. H. Oh, S. N. Hong, T. W. Kim, J. Cui… in Advances in FRP Composites in Civil Engine… (2011)

  2. No Access

    Article

    Indirect evaluation of the long-term oxidation properties of Al−21Ti−23Cr and Al−37Ti−12Cr coating materials for TiAl alloy

    The most pertinent coating materials in the Al−Ti−Cr alloy system to improve the high temperature oxidation resistance of a TiAl alloy, with respect to oxidation properties, resistance to thermal stress, and c...

    J. K. Lee, S. H. Kim, D. M. Wee, K. Sharvan Kumar… in Metals and Materials International (2008)

  3. No Access

    Article

    Effects of the colony size on the fracture toughness of TiAl−Mo−B alloys

    The effect of the colony size on the fracture toughness of Ti−46.5Al−1.5Mo−xB (x=0.1, 0.6, 1.0) alloys was investigated. The colony size was varied by a heat treatment in the alpha-single phase region and by d...

    S. W. Kim, J. S. Kim, K. Sharvan Kumar, D. M. Wee… in Metals and Materials International (2008)

  4. No Access

    Article

    Pancreatic carcinoid tumor with obstructive pancreatitis: multislice helical CT appearance: case report

    Carcinoid tumor of the pancreas is rare. Moreover, obstructive pancreatitis secondary to a pancreatic carcinoid tumor is extremely rare. We report a case of pancreatic carcinoid tumor in a 50-year-old male who...

    H. C. Kim, S. I. Park, S. J. Park, H. C. Shin, M. H. Oh, C. H. Kim… in Abdominal Imaging (2005)

  5. No Access

    Article

    Effects of the variation in α-phase volume fraction on the thermal stability of TiAl alloys with a lamellar microstructure

    The thermal stability of two-phase (α + γ) lamellar microstructure in Ti-Al-Mo PST (polysynthetically twinned that has single colony) crystals, containing C or Si, was investigated. In addition, the variation ...

    S. W. Kim, H. N. Lee, M. H. Oh, D. M. Wee in Journal of Materials Science (2004)

  6. No Access

    Article

    Phase transformation and microstructural features of NiAl/Ni3Al two-phase alloys containing ternary elements

    Various ternary elements were added to observe the effects on the microstructural features of β+γ′ two-phase alloys. The microstructural features of β+γ′ two-phase (Ni66Al34)100-χXχ(X=Ti, Si, Nb) depended on the ...

    S. H. Song, S. H. Kim, Y. H. Hong, M. H. Oh… in Metals and Materials International (2004)

  7. No Access

    Article

    Effects of ternary additions on the thermoelastic martensitic transformation of NiAl

    Nickel-rich β-NiAl alloys, which are potential materials for high-temperature shape-memory alloys, show a thermoelastic martensitic transformation, which produces their shape memory effect. However, the transform...

    S. H. Kim, D. M. Wee, M. H. Oh in Metallurgical and Materials Transactions A (2003)

  8. No Access

    Article

    Effects of the Variation in α-Phase Volume Fraction on the Thermal Stability of TiAl Alloys with Lamellar Microstructures

    The thermal stability of lamellar microstructure in Ti-Al-Mo PST crystals containing C or Si, was investigated. In addition, the variation of α-phase volume fraction in Ti-Al-Mo-(C,Si) systems was investigated...

    S. W. Kim, H. N. Lee, M. H. Oh, M. Yamaguchi, D. M. Wee in MRS Online Proceedings Library (2003)

  9. No Access

    Article

    An Al+Y Coating Process for Improvement of the High-Temperature Oxidation Resistance of a TiAl Alloy

    An Al+Y codeposition by a single EB–PVD process has been developed to improve the high-temperature oxidation resistance of a TiAl alloy. The Al+Y codeposited TiAl alloy with various ratios of Al and Y evaporat...

    H. G. Jung, D. M. Wee, M. H. Oh, K. Y. Kim in Oxidation of Metals (2001)

  10. No Access

    Article

    Effects of texture on the etching property of Fe-36%Ni invar sheets

    In order to make a high quality color cathode ray tube, the influence of the texture on the etching property of an invar (Fe-36%Ni) shadow mask sheet has been studied. For the etching property, new values (gR-, a

    N. J. Park, M. H. Oh, S. M. Kim in Metals and Materials (2000)

  11. No Access

    Article

    Silicon-to-indium tin oxide coated glass bonding for packaging of field emission arrays fabricated on silicon wafer

    A silicon-to-In2O3:Sn coated glass bonding has been developed for the package of field emission arrays fabricated on the silicon wafer, utilizing a conventional silicon-to- silicon anodic bonding using the glass ...

    W. B. Choi, B. K. Ju, Y. H. Lee, M. H. Oh, N. Y. Lee… in Journal of Materials Science (1999)

  12. No Access

    Article

    Brassinolide affects the rate of cell division in isolated leaf protoplasts of Petunia hybrida

    Brassinosteroids are known to promote cell elongation in a wide range of plant species but their effect on cell division has not been as extensively studied. We examined the effect of brassinolide on the kine...

    M.-H. Oh, S. D. Clouse in Plant Cell Reports (1998)

  13. No Access

    Article

    A Low Temperature Direct Bonding Method Using an Electron-Beam Evaporated Silicon-Oxide Interlayer

    In this work, we proposed a direct bonding method using interlayers for single crystalline silicon wafers and glass wafers. Various materials were used for interlayers of thermal oxide, sputtered nitride, elec...

    H. W. Park, B. K. Ju, Y. H. Lee, J. H. Park, N. Y. Lee… in MRS Online Proceedings Library (1996)

  14. No Access

    Article

    Experimental Analysis of the Process of Anodic Bonding using an Evaporated Glass Layer

    A silicon-to-silicon anodic bonding process using a glass layer deposited by electron beam evaporation will be described. Corning #7740 Pyrex glass was used the source material of electron evaporation. From Au...

    W. B. Choi, B. K. Ju, Y. H. Lee, M. R. Haskard… in MRS Online Proceedings Library (1996)

  15. No Access

    Article

    A Study on Hermetic Glass Sealing Using a Modified Direct Bonding Method

    This paper presents the process and experimental results about the improved initial bonding between #7740 glass and silicon wafers. We employed a modified initial bonding procedure, called by water-enhanced di...

    B. K. Ju, C. G. Ko, Y. H. Lee, I. B. Kang, P. White… in MRS Online Proceedings Library (1996)

  16. No Access

    Article

    Al-21Ti-23Cr High-Temperature Protective Coating on TiAl Intermetallic Compounds by RF Magnetron Sputtering

    Ti-48A1 specimens were coated with Al-21Ti-23Cr film at 200 W, 0.8 Pa and 573 K by RF magnetron sputtering. The oxidation behavior of the coated specimens was investigated through isothermal and cyclic oxidati...

    J. Y. Park, H. N. Lee, S. W. Park, M. H. Oh, D. M. Wee in MRS Online Proceedings Library (1996)

  17. No Access

    Article

    Fabrication of silicon membrane using fusion bonding and two-step electrochemical etch-stop**

    A new type of silicon membrane structure was fabricated using wafer fusion bonding and two-step electrochemical etch-stop** methods. An “active wafer” of p-type epi/n-type epi/p-type substrate was first elct...

    B. K. Ju, M. H. Oh, K. H. Tchah in Journal of Materials Science (1994)

  18. No Access

    Article

    Interfacial oxide growth and filling-up behaviour of the micro-gap in silicon fusion bonding processes

    In the silicon fusion bonding (SFB) process, the influence of post-annealing atmospheres on the micro-gap existing at the Si-Si bonding interface was investigated with the observation of ultrasonic images, ang...

    B. K. Ju, M. H. Oh, K. H. Tchah in Journal of Materials Science (1993)

  19. No Access

    Article

    Environmental Effects on the Room Temperature Ductility of Polysynthetically Twinned (PST) Crystals of Binary and some Ternary TiAl Compounds

    Environmental effects on the room temperature ductility of polysynthetically twinned (PST) crystals of binary and some ternary TiAl compounds have been investigated through tensile tests conducted in four diff...

    M. H. Oh, H. Inui, M. Misaki, M. Kobayashi, M. Yamaguchi in MRS Online Proceedings Library (1992)

  20. No Access

    Article

    Electrical characteristics and reheat-treatment effects in a ZnO varistor fabricated by two-stage heat-treatment

    Conventional ZnO varistors are generally fabricated by sintering ZnO powder mixed with additives such as Bi2O3, Sb2O3, Cr2O3, Co2O3, and MnO2. To reduce abnormal grain growth and change in electrical characterist...

    N. Y. Lee, M. -S. Kim, I. -J. Chung, M. -H. Oh in Journal of Materials Science (1991)

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