16 Result(s)

Article

Effects of Annealing Treatment on the Anisotropy Behavior of Cold-Rolled High-Manganese Austenite Stainless Steels

High-Mn (over 24 wt%) austenitic steels recently have been developed with excellent mechanical properties such as high strength and ductility at very low temperatures for cryogenic application. Especially, col...

Minha Park, Moon Seok Kang, Geon-Woo Park… in Metals and Materials International (2021)

Article

Microstructure and Tensile Properties of Ferritic Lightweight Steel Produced by Twin-Roll Casting

Ferritic Fe–8Al–5Mn–0.1Nb–0.1C lightweight steel has been produced by twin-roll casting (TRC) process. The microstructures, in as-cast condition and during subsequent thermomechanical treatments, and tensile p...

Yunik Kwon, Ji Hyun Hwang, Hee Chae Choi… in Metals and Materials International (2020)

Article

Deformation behavior of ferrite-austenite duplex high nitrogen steel

The tensile deformation behavior of ferrite-austenite duplex high nitrogen steel has been investigated by interrupted tensile tests and compared with that of fully austenitic high nitrogen steel. It shows that...

Byoungkoo Kim, T. T. T. Trang, Nack J. Kim in Metals and Materials International (2014)

Article

Cobalt–nickel composite films synthesized by chemical bath deposition method as an electrode material for supercapacitors

Cobalt–nickel (Co–Ni) composite thin films were fabricated on copper substrates using a simple chemical bath deposition route in an ammonia-complexed solution containing cobalt chloride and nickel chloride. Th...

Sunil G. Kandalkar, Hae-Min Lee, Seung Hye Seo… in Journal of Materials Science (2011)

Article

Effect of the titanium ion concentration on electrodeposition of nanostructured TiNi films

Electrodeposition of nanostructured titanium–nickel films was performed and the effect of the concentration of the titanium source on the film characteristics was investigated. Scanning electron microscopy ind...

Hae-Min Lee, Santosh K. Mahapatra, John Kiran Anthony… in Journal of Materials Science (2009)

Article

The critical amount of nitrogen on the formation of nitrogen gas pores during solidification of 25Cr-7Ni duplex stainless steels

The effects of casting thickness, nitrogen contents, cooling rate, and Mn contents on the formation of nitrogen gas pores during solidification of 25Cr-7Ni-1.5Mo-3W duplex stainless steels (DSS) were quantitat...

Young-Hwan Park PhD, Jong-Wan Kim… in Metallurgical and Materials Transactions B (2003)

Article

Structural, Electrical, and Optical Properties of Erbium-Doped Epitaxial BaTiO₃ Films Grown by RF Sputtering

We have investigated the epitaxial growth of Er-doped BaTiO₃ films using rf magnetron sputtering. The Er-doped films (0.5 - 1 μm thick) were deposited on MgO (001) single-crystal substrates at various temperature...

Pedro Barrios, Cheng Chung Li, Hong Koo Kim… in MRS Online Proceedings Library (1995)

Article

Monitoring of the Surface Species on Silicon After Chemical Cleaning by FTIR Spectroscopy

For the analysis of as-cleaned surface, we have used a the unique IR method that uses a highsurface-area porous sample. We have observed by experiments that the oxide growth rate on silicon is reduced to a min...

Chan-Hwa Chung, Chang-Koo Kim, Sang Heup Moon in MRS Online Proceedings Library (1995)

Article

Erbium Doped Semiconductor Thin Films Prepared by Rf Magnetron Sputtering

Highly Er-doped (~10²⁰ atoms/cm³) silicon and silica films were deposited by RF magnetron sputtering. Erbium was doped into the host material by co-sputtering technique. Deposited films (0.5 - 1.2 µm thick) were ...

Hong Koo Kim, Cheng Chung Li, **ao Ming Fang… in MRS Online Proceedings Library (1993)

Article

Suppression of superconductivity in the Er₁−_x Pr_x Ba₂Cu₃O₇−_δ

Measurements of electrical resistivity. X-ray diffraction patterns, magnetic susceptibility and thermoelectric power of the Er_1-xPr_xBa₂Cu₃O_7-δ system have been made. The superconducting transition temperature was...

Kyeong Bock Lee, Choon Mahn Park, Hyun Sik Noh… in Journal of Materials Science (1993)

Article

ZnO films deposited on GaAs substrates with a SiO₂ thin buffer layer

Sputter deposition of ZnO films on GaAs substrates has been investigated. ZnO films were radio frequency (rf)-magnetron sputter deposited on GaAs substrates with or without SiO₂ thin buffer layers. Deposition par...

Hong Koo Kim, Michelle Mathur in Journal of Electronic Materials (1993)

Article

Structural and Electrical Properties of ZnO Films Deposited on GaAs Substrates by RF Magnetron Sputtering

Sputter deposition of ZnO films on GaAs substrates has been investigated. ZnO Alms were deposited using a ZnO compound target in Ar or Ar/O₂ (95/5) ambient. Deposition parameters such as RF power, substrate-targe...

Hong Koo Kim, Michelle Mathur in MRS Online Proceedings Library (1991)

Article

Superconductivity of (Y_1−xRE_x)Ba₂Cu₃O_7#x2212;δ system

Polycrystalline samples of the superconducting oxides (Y_1−x RE _x )Ba₂Cu₃O_7−δ (RE = Er and Dy) withx=0, 0.2, 0.4, 0.6, 0.8 and 1.0 were prepared. From the X-ray diffraction and th...

Kyun Nahm, Jung Soo Kim, Kyeong Bock Lee, Deoug Wha Shong… in Journal of Materials Science (1990)

Article

Magnetic susceptibilities of the high-T _c superconductors Y_1−x Er _x Ba₂Cu₃O_7−δ

Kyun Nahm, Jung Soo Kim, Kyeong Bock Lee… in Journal of Materials Science Letters (1989)