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  1. No Access

    Article

    Improvement of tensile strength and anti-oxidation property of graphite electrode for electric arc furnace through heterogenization of binder pitch

    This study involved the heterogenization of a binder pitch (BP) using a small amount of nanocarbon to improve physical properties of the resulting graphite electrode (GE). Heterogenization was carried out by a...

    Kohei Ono, Minki Sung, Yuanshuo Peng, Seung-Jae Ha, Young-Pyo Jeon… in Carbon Letters (2024)

  2. No Access

    Article

    Investigation of Carburization and Melting Behavior of Fully Reduced LRI and IOS on Coke Substrates

    In the course of develo** hydrogen-enriched blast furnace ironmaking operation, the carburization and melting behavior of the fully reduced low-reduced iron (LRI) and the iron ore sinter (IOS) on the coke su...

    Junwoo Park, Minki Kim, In-kook Suh, Eunju Kim… in Metals and Materials International (2024)

  3. Article

    Open Access

    Characterization of Formed TRIP1180 Steel Sheet Surface After Stam** with PVD-Coated Tools

    The wear tests are conducted on bending punches deposited with PVD CrN and AlTiCrN coatings using the newly proposed progressive die. Then, the surface quality of the formed product is characterized through th...

    Junho Bang, Gihyun Bae, Minki Kim, Junghan Song… in Metals and Materials International (2024)

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  4. No Access

    Article

    A Stepped Mesh Host for Lithium Metal Batteries Inspired by Transmission Electron Microscopy Sampling Grids

    With the growing demand for high-energy-density rechargeable batteries, lithium metal anodes have reemerged as a promising alternative to conventional graphite anodes in lithium-ion batteries. Lithium metal bo...

    Jeongmin Kim, Mihyun Kim, Minki Kim, **seok Hong… in Electronic Materials Letters (2023)

  5. No Access

    Article

    Biodegradable materials and devices for neuroelectronics

    Recent advances in biodegradable neuroelectronics, which remove the need for extraction surgery and reduce foreign body reactions, provide versatile options for implantable devices, such as for provisional dia...

    Giheon Kim, Minki Hong, Yerim Lee, Jahyun Koo in MRS Bulletin (2023)

  6. No Access

    Article

    Quantitative Evaluation of Tool Wear in Cold Stam** of Ultra-High-Strength Steel Sheets

    The body of an automobile must be lightweight and crash-worthy. The use of advanced high-strength steel reduces the manufacturing cost for automobile body and improves energy absorption during an impact. Howev...

    Junho Bang, Minki Kim, Gihyun Bae, Junghan Song… in Metals and Materials International (2023)

  7. No Access

    Chapter and Conference Paper

    Strain Rate-Dependent Hardening Behavior of Weld Metal in Laser Welded Blanks with GEN3 AHSS

    This paper introduces the effects of the strain rate on the hardening behavior of weld metal . Mini-tensile specimens to characterize the weld properties. Tensile tests were then performed at strain rates...

    Minki Kim, Jiahui Gu, Hyunok Kim in NUMISHEET 2022 (2022)

  8. No Access

    Chapter and Conference Paper

    Shape Optimization of a Cruciform-Like Specimen for Combined Tension and Shear Loading

    The present work is concerned with the optimization of cruciform-like specimen shape under combined loading. A novel shape of a cruciform-like specimen is proposed, to measure flow stresses under combined ....

    Minki Kim, **** Ha, Yannis P. Korkolis in NUMISHEET 2022 (2022)

  9. No Access

    Article

    Stress Corrosion Cracking of a Copper Pipe in a Heating Water Supply System

    Stress corrosion cracking behavior of a copper pipe and its mechanism were investigated in a heating water supply system using both metallurgical and mechanical analyses. The X-ray diffraction and energy dispe...

    Hobyung Chae, Huai Wang, Minki Hong, Woo Cheol Kim… in Metals and Materials International (2020)

  10. No Access

    Article

    Failure Analysis of a Water Wall Boiler Tube for Power Generation in a District Heating System

    Corrosion failure of materials often exposed to the corrosive environment in district heating systems is critical for operation and maintenance of the facility. It is important to establish a prevention method...

    Minki Hong, Hobyung Chae, Woo Cheol Kim, Jung-Gu Kim… in Metals and Materials International (2019)

  11. No Access

    Article

    Fully transparent, non-volatile bipolar resistive memory based on flexible copolyimide films

    Partially aliphatic homopolyimides and copolyimides were prepared from rel-(1′R,3S,5′S)-spiro[furan-3(2H),6′-[3]oxabicyclo[3.2.1]octane]-2,2′,4′,5(4H)-tetrone (DAn), 2,6-diaminoanthracene (AnDA), and 4,4′-oxyd...

    Hwan-Chul Yu, Moon Young Kim, Minki Hong, Kiyong Nam… in Electronic Materials Letters (2017)

  12. No Access

    Article

    Electrically Tunable Phase Shifters with Air-Dielectric Sandwich Structure

    Electrically tunable microwave phase shifter was developed by inserting dielectric slab and piezoelectric actuator inside a waveguide. Air-dielectric sandwich structure of dielectric material and thin air gap ...

    Minki Jeong, Victor Kazmirenko, Yuriy Poplavko… in MRS Online Proceedings Library (2002)

  13. No Access

    Article

    Microwave Dielectric Spectroscopy of Ferroelectric Thin Films

    We devised a measurement method of microwave dielectric constants of dielectric thin films without applying electrodes. The method uses a rectangular waveguide in which the dielectric thin films prepared on a ...

    Beom** Kim, Victor Kazmirenko, Minki Jeong… in MRS Online Proceedings Library (2002)