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8 Result(s)

within M. H. Oh Remove this filter Characterization and Evaluation of Materials Remove this filter Nanotechnology Remove this filter

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  1. 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)

  2. 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)

  3. 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)

  4. 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)

  5. 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)

  6. 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)

  7. 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)

  8. No Access

    Article

    Cold-Rolling and Subsequent Annealing of Ti-Rich Tial Polysynthetically Twinned (PST) Crystals

    Polysynthetically twinned (PST) crystals of Ti-rich TiAl have been grown and specimens cut from these crystals have been rolled at room temperature and subsequently annealed at 900°C and 1000°C. When the shear...

    M. H. Oh, H. Inui, S. R. Nishitani, M. Yamaguchi in MRS Online Proceedings Library (1990)