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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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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 22, Issue 4 - Dec 1989
Volume 22, Issue 3 - Sep 1989
Volume 22, Issue 2 - Jun 1989
Volume 22, Issue 1 - Mar 1989
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Effects of Hear Teratment on the Insulation Layer of Non-oriented Silicon Steel Sheets
Journal of the Korean institute of surface engineering, volume 22, issue 3, 1989, Pages 109~117
The effect of heft treatment on the characteristic properties of insulation layer is studied for two kinds of non-oriented silicon steels, which were insulation-coates with various kinds of inorganic and inorganic-organic complex coating solutions. In addition, how the carbon contained in the insulation layer would affect the carbon content and the magnetic properties of the steel substrates is examined. Lower temperature heat treftment (
for 0.5hr) is found to render morw favorable surface qualities, wheras higher temperature heat treatment (
for 2hr) better core loss due to grin growt occurred during the heat treatment. Decarburization of the steel substrate is also found unaffectrd by the presence of carbon in the insulation layer.
A Kinetic Study on the Zinc-Nickel Plating on an Elstrolytic Sulface Bathe
Journal of the Korean institute of surface engineering, volume 22, issue 3, 1989, Pages 118~127
The rate of electrodeposition Zinc-nickel alloy on to electrolytic ione in sulface solution both under an inter and air atmospherss has studied by use of a rotating disc geometry. The kinetics shows 1st order reaction, and the rate constants are proportional to the square root of rpm, however, they are less than the valuse suggested by Levich. The rate constants of zinc deposition approach the total mass transfer rate constants with increasing potential and deviate with increasing rotaing speed, but those of nickel deposition are constant. Below
the activation engrgies of zinc deposition and nikel deposition were 4.4Kcal/mol and 6.3Kcal/mol respectively. There results show that overall reaction rate of zinc-nickel plaeting is controlled by mixed reaction and zinc deposotion is more affected by mass transfer reaction than nickel. The current density for the zinc-nickel plating was less in an air atmosphere than in a nitrogen atmosphere. The cathode efficiency increased with decreasing cathode rotating speeds, potentials, and increasing temperatures. Zzinc-nickel platings are more improved in microhardnss than zinc platings.
Mechanism of Cobalt Deposition using Polarization Meaurements in Sulfate Solution
Journal of the Korean institute of surface engineering, volume 22, issue 3, 1989, Pages 128~134
Mechanism of cobalt deposition was investigated using the potentiodynamic potentiostatic methods in solution of pH 4 and pH6.4 In all experimental conditions, polarization curves showed two regions with different Tafel slopes and the reaction order of cobalt ion was varied with the pH. It is belived that the deposition mechanism depends not only on the portential but also on the ph.
The Study of Structre-Peoperty-Process in Alumina Coating of Steel by Chemical Vapour Deposition Process
Journal of the Korean institute of surface engineering, volume 22, issue 3, 1989, Pages 135~144
Aluminium Oxide was deposited with a C.V.D.-technique on various substrates. The effects of various treating condition such as temperature, time, heat resistance and composition of substrates were investigated in order to understand the relationship of structure, property and process. Grain size depends upon the activity of adsorption siite and coarsened with increasing temperature and time. Deposition rate decreases in order of electrolytic iron, carbon steel STS430 and STS304, since the active site for adsorption of reactant was more decreased for Cr and Ni than Fe. Oxidation resistance of alumina coated specimens improved markedely and that of stainless steel was prominent.
Anodic Film Formation on Aluminum(IV)
Journal of the Korean institute of surface engineering, volume 22, issue 3, 1989, Pages 145~153