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9 Result(s)

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  1. 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)

  2. 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)

  3. 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)

  4. 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)

  5. 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)

  6. 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)

  7. 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)

  8. 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)

  9. 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)