39 Result(s)
within
English
Surfaces and Interfaces, Thin Films
Changhee Lee
Article
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Article
Coarsening Behavior of the (Ti, Nb)(C, N) Complex Particle in a Microalloyed Steel Weld Heat-Affected Zone Considering the Critical Particle Size
Our recent report revealed the effect of critical particle size on the particle coarsening behavior of the TiN particle. In the present work, the equation for critical particle size is extended by considering ...
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Article
Effect of vitreous enamel coating on the oxidation behavior of Ti6Al4V and TiAl alloys at high temperatures
Vitreous enamel coating is a promising candidate as a high temperature protective coating for titanium (Ti)-based alloys due to its high thermo-chemical stability, compatibility, and matching thermal expansion...
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Article
Effects of Silver Addition on Properties and Performance of Plasma Sprayed La0.6Sr0.4Co0.2Fe0.8O3−δ Interconnect Layer
Interconnect layers on stainless steel substrates (STS430) for solid oxide fuel cells (SOFC) were built up by atmospheric plasma spraying (APS) using spray dried La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) and blended LSCF/A...
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Article
Editorial
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Article
The Effects of Successive Impacts and Cold Welds on the Deposition Onset of Cold Spray Coatings
In this study, the impact and deposition behavior of nickel particles onto relatively soft 6061-T6 aluminum alloy and copper substrates in a kinetic spray process was investigated by comparing individual parti...
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Article
An Experimental and Finite Element Study of Cold Spray Copper Impact onto Two Aluminum Substrates
The effect of cold spray temperature and substrate hardness on particle deformation and adhesion has been studied, with particular emphasis on adiabatic shearing leading to melting. Copper particles were cold ...
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Article
Effect of Thermally Softened Bronze Matrix on the Fracturing Behavior of Diamond Particles in Hybrid Sprayed Bronze/Diamond Composite
In our previous study (Na et al., Compos Sci Technol 69:463-468, 2009), optimized thickness of protective nickel film was proposed for smaller diamond feedstock to obtain reduced impact stress and uniform flig...
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Article
Erratum to: Editorial
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Article
Dependence of Bonding Mechanisms of Cold Sprayed Coatings on Strain-Rate-Induced Non-Equilibrium Phase Transformation
Strain-rate-induced amorphization at the impact interface of Ni-Cu was observed in a cold spray process by high-resolution transmission electron microscopy. Based on finite element analysis for the evolution o...
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Article
Evaluation of Die-Soldering and Erosion Resistance of High Velocity Oxy-Fuel Sprayed MoB-Based Cermet Coatings
Soldering and erosion are two of the biggest serious problems faced in the die-casting industries. Cermet coatings utilized by high-velocity oxy-fuel (HVOF) spray technology have been developed in an attempt t...
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Article
Effect of Complex Inclusion Particles on the Solidification Structure of Fe-Ni-Mn-Mo Alloy
The effect of combinations of several deoxidizers, i.e., Mg-Al, Mg-Ti, Al-Ti, and Ce-Al, on the solidification structure of Fe-2 mass pct Ni-1 mass pct Mn-1 mass pct Mo alloy melt was investigated using a melt sa...
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Article
Direct top–down fabrication of nanoscale electrodes for organic semiconductors using fluoropolymer resists
We report the use of a fluoropolymer resist for the damage-free e-beam lithographic patterning of organic semiconductors. The same material is also shown to be suitable as an orthogonal electron beam resist fo...
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Article
Deposition Behavior and Microstructural Features of Vacuum Kinetic Sprayed Aluminum Nitride
The vacuum kinetic spray (VKS) method is a relatively advanced technology by which thin and dense ceramic coatings can be fabricated via the high-speed impact of submicron-sized particles at room temperature. ...
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Article
Effect of Process Gas Flow on the Coating Microstructure and Mechanical Properties of Vacuum Kinetic-Sprayed TiN Layers
TiN films were fabricated on glass substrate by a vacuum kinetic spray method to investigate the effect of process gas flow rate, which determines particle velocity, on coating microstructure, and the mechanic...
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Article
Manufacturing and Compressive Deformation Behavior of High-Strength Aluminum Coating Material Fabricated by Kinetic Spray Process
The compressive deformation behavior in the thickness direction of a kinetic-sprayed pure-aluminum layer whose thickness is ~15 mm was investigated. The yield strength of coating material was 200 MPa, and a un...
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Article
Erratum to: Effect of Plasma Nitriding and Nitrocarburizing on HVOF-Sprayed Stainless Steel Coatings
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Article
Effect of Plasma Nitriding and Nitrocarburizing on HVOF-Sprayed Stainless Steel Coatings
In this work, the effects of plasma nitriding (PN) and nitrocarburizing on HVOF-sprayed stainless steel nitride layers were investigated. 316 (austenitic), 17-4PH (precipitation hardening), and 410 (martensiti...
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Article
Oxide Formation Mechanisms in High Manganese Steel Welds
Oxide inclusions in high-Mn steel welds were analyzed and almost all of which were found to belong to the MnO-Al2O3-SiO2 system. In this study, the inclusions were categorized based on MnS morphology into the fol...
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Article
Bonding, Reactivity, and Mechanical Properties of the Kinetic-Sprayed Deposition of Al for a Thermally Activated Reactive Cu Liner
Pure Al coatings were fabricated on Cu substrates via kinetic spraying to produce a thermally activated reactive Cu liner. The coatings need to endure high-strain rate severe plastic deformation and react with...
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Article
Mn-Depleted Zone Formation in Rapidly Cooled High-Strength Low-Alloy Steel Welds
The mechanism of formation of an Mn-depleted zone (MDZ) near the inclusion in a steel weld was elucidated based on quantification of MDZ depth and thermodynamic calculations. The effective inclusion phase for ...
