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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean institute of surface engineering
Journal Basic Information
Journal DOI :
The Korean Institute of Surface Engineering
Editor in Chief :
Volume & Issues
Volume 35, Issue 6 - Dec 2002
Volume 35, Issue 5 - Oct 2002
Volume 35, Issue 4 - Aug 2002
Volume 35, Issue 3 - Jun 2002
Volume 35, Issue 2 - Apr 2002
Volume 35, Issue 1 - Feb 2002
Selecting the target year
High Temperature Oxidation of TiAl-based XD 45 and XD47 Intermetallics
Journal of the Korean institute of surface engineering, volume 35, issue 4, 2002, Pages 193~198
Alloys of XD45 (Ti45A12Nb2Mn-0.8vol%TiB
) and XD47 (Ti47A12Nb2Mn-0.8vol%TiB
) were oxidized between 800 and
in air, and their oxidation characteristics were studied. The oxide scales consisted primarily of an outer
layer, an intermediate
-rich layer, and an inner mixed layer of (
). Nb tended to present at the lower part of the oxide scale, whereas Mn at the upper part of the oxide scale. The Pt marker tests indicated that the outer oxide layer grew primarily by the outward diffusion of Ti and Mn, and the inner mixed layer by the inward transport of oxygen.
A comparative study on mechanical properties of TiN and TiAlN films prepared by Arc Ion Plating Technique
Journal of the Korean institute of surface engineering, volume 35, issue 4, 2002, Pages 199~205
TiN and TiAlN films were deposited on SKD 11 steel substrates by an arc ion plating (AIP) technique. The crystallinity and morphology for the deposited films were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The mechanical properties of both films were investigated through the indentation, impact, and wear test. Those films fairly adherent to SKD 11 steel substrate, showed hardness values of 2300
with a load of 25g, respectively. During impact test, TiAlN films showed much superior impact wear resistance to TiN films. It could be suggested that the TiN films was failed relatively by plastic deformation with oxidation during impact test, while TiAlN films was failed by brittle fracture and resisted the oxidation by the impact energy. The friction coefficient of TiAlN films became lower than that of TiN films at high sliding speed condition although it was higher than that of TiN films at low speed. Therefore, TiAlN films was suggested to be more advantageous than TiN films for high speed machining fields.
A Study on the Tensile Characteristics of Spectra/Vinylester Composites with Ion Beam Treatment of Spectra Fibers.
Journal of the Korean institute of surface engineering, volume 35, issue 4, 2002, Pages 206~210
The use of Spectra fibers as fiber cloth is increasing because of their excellent impact resistance. However, a major limitation on the use of Spectra fibers is a chemical inertness. In this Study, Spectra fibers were surface-treated using Ar
ion beam under oxygen environment to improve the tensile property of Spectra/vinylester composites. The effect of surface treatment of Spectra fibers on the tensile property of Spectra/vinylester composites was determined from tensile tests using Spectra/vinylester composite specimens with and without a hole. It was found that the tensile stiffness and strength of surface-treated case were 22% and 17% higher than those of untreated case for specimens with no hole. The maximum load of surface-treated case was about 15% higher than that of untreated case for specimens with a holele
Deposition Behaviors of Ti-Si-N Thin Films by RF Plasma-Enhanced Chemical Vapor Deposition.
Journal of the Korean institute of surface engineering, volume 35, issue 4, 2002, Pages 211~217
Ti-Si-N films were deposited onto WC-Co substrate by a RF-PECVD technique. The deposition behaviors of Ti-Si-N films were investigated by varying the deposition temperature, RF power, and reaction gas ratio (Mx). Ti-Si-N films deposited at 500, 180W, and Mx 60% had a maximum hardness value of 38GPa. The microstructure of films with a maximum hardness was revealed to be a nanocomposite of TiN crystallites penetrated by amorphous silicon nitride phase by HRTEM analyses. The microstructure of maximum hardness with Si content (10 at.%) was revealed to be a nanocomposite of TiN crystallites penetrated by amorphous silicon nitride phase, but to have partly aligned structure of TiN and some inhomogeniety in distribution. and At above 10 at.% Si content, TiN crystallite became finer and more isotropic also thickness of amorphous silicon nitride phase increased at microstructure.
Lead-free Solder Alloys
Journal of the Korean institute of surface engineering, volume 35, issue 4, 2002, Pages 218~231
As the environmental regulation worldwide emerges, most notably in Europe and Japan, the elimination of Pb usage in electronic assemblies has been an important issue for microelectronics assembly due to the inherent toxicity of Pb. This has provided an impetus towards the development of Pb-free solders. A major factor affecting alloy selection is the melting point, since this will have a major impact on the other polymeric materials used in microelectronic assembly and encapsulation. Other important manufacturing issues are cost, availability, and wetting characteristics. Reliability related properties include mechanical strength, fatigue resistance, coefficient of thermal expansion and reactivity with substrate. In this article, Pb-free solder alloys have been proposed so far have been reviewed and are summarized.
Composition and Microstructure of Electroplated Zinc-Chromium Alloy according to Electrolysis Conditions
Journal of the Korean institute of surface engineering, volume 35, issue 4, 2002, Pages 232~240
The composition and the microstructure of the Zn-Cr alloys electroplated in chloride bath with EDTA were studied according to electrolysis conditions. The cathode current efficiency decreased with increasing both Cr/(Cr+Zn) ratio and current density. The Cr content of the alloy deposits increased with Cr/(Cr+Zn) ratio and current density The phase structure of Zn-Cr alloy deposits changed from η-Zn through η-Zn+
'-ZnCr with increasing Cr content of alloys. The surface morphology of Zn-Cr alloy deposits changed from fine needle shaped crystallites through the mixed structure of needle-shaped and granular one to the colony structure with fine granular crystallites according to the change of phase structure
Characteristics of Microstructure of Hardfacing Layer of Stellite 6 with Mo Addition
Journal of the Korean institute of surface engineering, volume 35, issue 4, 2002, Pages 241~248
Hardfacing layers of Stellite 6 alloy with different molybdenum content are deposited on AISI 1045 carbon steel using plasma transferred arc welding (PTAW). The properties of the hardfacing layer are investigated in order to clarify the effect of molybdenum addition to the cobalt-base alloy. With an increase in molybdenum contents, the size of Cr-rich carbides in the interdendritic region is abruptly refined, but volume fraction of the carbide slightly increases. Also, with an increase of Mo,
C type carbides are formed instead of Cr-rich
type carbided, and this microstructural change enhanced the mechanical properties of Stellite 6 alloy.