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  1. No Access

    Article

    Shock Absorption Effect on Particle Fragmentation and Microstructural Features of Vacuum-Kinetic-Sprayed Al2O3 Film on Polycarbonate Substrate

    As the demand for flexible devices has increased, polymers have become very promising materials for these applications because they have excellent flexibility, lightweight, and low cost. Vacuum kinetic sprayin...

    Hyungkwon Park, Hansol Kwon, Jaeick Kim… in Journal of Thermal Spray Technology (2021)

  2. No Access

    Article

    Impact Behavior for Successful Particle–Particle Bonding in Vacuum Kinetic Spraying

    This study investigated the impact behavior of ceramic particles in vacuum kinetic spray (VKS), also known as aerosol deposition method, for successful coating build-up using both experimental methods and nume...

    Hansol Kwon, Yeonju Kim, Hyungkwon Park… in Journal of Thermal Spray Technology (2021)

  3. No Access

    Article

    Reactivity Enhancement and Fabrication of Al-MoO3 Thermite Coating Using Ball Milling for Kinetic Spraying

    Thermite materials, which are a pyrotechnic composition of metal and metal oxide, can create bursts of heat and high temperature thanks to an exothermic reduction–oxidation reaction. Fabrication methods of bul...

    Seungtae Lee, Jaeick Kim, Changhee Lee in Journal of Thermal Spray Technology (2020)

  4. No Access

    Article

    Correlation of Plasma Erosion Resistance and the Microstructure of YF3 Coatings Prepared by Vacuum Kinetic Spray

    To decrease the generation of contamination particles during semiconductor manufacturing processes, a plasma-erosion-resistant coating that can prevent particle dropout on the surface of the wafer etching cham...

    Yeonju Kim, Hansol Kwon, Hyungkwon Park… in Journal of Thermal Spray Technology (2020)

  5. No Access

    Article

    Computational Research on Factors Affecting Particle Velocity in a Vacuum Kinetic Spray Process

    In vacuum kinetic spraying (VKS) systems, also called aerosol deposition, the particle velocity is crucial because kinetic energy determines successful deposition. However, various factors simultaneously affec...

    Hyungkwon Park, Hansol Kwon, Yeonju Kim… in Journal of Thermal Spray Technology (2019)

  6. No Access

    Article

    Characterization of Mechanical and Metallurgical Notch Effects of DP980 Steel Weld Joints in Fatigue Performance

    This work investigates the use of 980 MPa grade dual-phase (DP) steel joints with pulsed current gas metal arc welding (P-GMAW) for reliable weld performance by comparing actual welded joints with thermo-mecha...

    Gitae Park, Gyuyeol Bae, Changhee Lee in Metallurgical and Materials Transactions A (2019)

  7. No Access

    Article

    Performance Comparison of Double-Layer Liner for Shaped Charge Fabricated Using Kinetic Spray

    Shaped charge (SC) ammunition is a weapon designed to penetrate armor. The functions of the liner, which is a core component of the SC, are penetration and explosion. Because of the increasing necessity for th...

    Seungtae Lee, Jaeick Kim, Seejo Kim, Seong Lee… in Journal of Thermal Spray Technology (2019)

  8. No Access

    Article

    Roles of Particle Size Distribution in Bimodal Feedstocks on the Deposition Behavior and Film Properties in Vacuum Kinetic Spraying

    Vacuum kinetic spray (VKS), also called aerosol deposition method, is a spray process that makes it possible to fabricate dense ceramic films at room temperature. Although the deposition rate of VKS is better...

    Hansol Kwon, Hyungkwon Park, Changhee Lee in Journal of Thermal Spray Technology (2018)

  9. No Access

    Article

    Correlation Between Microstructure and Low-Temperature Impact Toughness of Simulated Reheated Zones in the Multi-pass Weld Metal of High-Strength Steel

    A large fraction of reheated weld metal is formed during multi-pass welding, which significantly affects the mechanical properties (especially toughness) of welded structures. In this study, the low-temperatur...

    Yongjoon Kang, Gitae Park, Seonghoon Jeong… in Metallurgical and Materials Transactions A (2018)

  10. No Access

    Article

    Microstructure Evolution and Age-Hardening Behavior of Microalloyed Austenitic Fe-30Mn-9Al-0.9C Light-Weight Steels

    The aging behavior and mechanical properties of microalloyed austenitic Fe-30Mn-9Al-0.9C light-weight steels were investigated through transmission electron microscopy analysis, electron backscatter diffractio...

    Joonoh Moon, Seong-Jun Park, Changhee Lee… in Metallurgical and Materials Transactions A (2017)

  11. No Access

    Article

    Inflight Particle Behavior in the Vacuum Kinetic Spray Process

    The vacuum kinetic spray (VKS) process, also-called aerosol deposition, is a promising spray technology by which a thin or thick film can be fabricated at room temperature. Although a number of relevant studie...

    Hyungkwon Park, Hansol Kwon, Changhee Lee in Journal of Thermal Spray Technology (2017)

  12. No Access

    Article

    Correlation of Fracture Mode Transition of Ceramic Particle with Critical Velocity for Successful Deposition in Vacuum Kinetic Spraying Process

    Vacuum kinetic spraying (VKS) is a promising room-temperature process to fabricate dense ceramic films. However, unfortunately, the deposition mechanism is still not clearly understood. In this respect, the cr...

    Hyungkwon Park, **young Kim, Sung Bo Lee… in Journal of Thermal Spray Technology (2017)

  13. No Access

    Article

    Correlation of Impact Conditions, Interface Reactions, Microstructural Evolution, and Mechanical Properties in Kinetic Spraying of Metals: A Review

    In the past, most studies into kinetic spraying technology focused on basic research, but a large portion of current research is devoted to industrial applications of the technology. To advance, however, studi...

    Jaeick Kim, Changhee Lee in Journal of Thermal Spray Technology (2016)

  14. No Access

    Article

    Factors Affecting the Inclusion Potency for Acicular Ferrite Nucleation in High-Strength Steel Welds

    Factors affecting the inclusion potency for acicular ferrite nucleation in high-strength weld metals were investigated and the contribution of each factor was qualitatively evaluated. Two kinds of weld metals ...

    Yongjoon Kang, Seonghoon Jeong, Joo-Hee Kang… in Metallurgical and Materials Transactions A (2016)

  15. No Access

    Article

    Kinetic Spraying Deposition of Reactive-Enhanced Al-Ni Composite for Shaped Charge Liner Applications

    Liners used in shaped charges (SC) must possess good penetration ability and explosive power. Producing the reactive layer (i.e., the Al-Ni composite) on a well-penetrating liner (i.e., Cu) via spray coating i...

    Gyeongjun Byun, Jaeick Kim, Changhee Lee, See Jo Kim… in Journal of Thermal Spray Technology (2016)

  16. No Access

    Article

    Variation in the Chemical Driving Force for Intragranular Nucleation in the Multi-pass Weld Metal of Ti-Containing High-Strength Low-Alloy Steel

    The variation of the Mn-depleted zone (MDZ) around the inclusion during multi-pass welding of Ti-containing high-strength low-alloy (HSLA) steel was investigated by taking the changes in the impact toughness a...

    Yongjoon Kang, Kyutae Han, Joo Hyun Park… in Metallurgical and Materials Transactions A (2015)

  17. Article

    Microstructure of Kinetic Spray Coatings: A Review

    Kinetic spray process has been applied to various industrial fields such as automotive, aviation, and defense industries due to its availability to produce high-performing coating layer. However, since the pro...

    Changhee Lee, Jaeick Kim in Journal of Thermal Spray Technology (2015)

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  18. No Access

    Article

    Room Temperature Synthesis of Highly Compact TiO2 Coatings by Vacuum Kinetic Spraying to Serve as a Blocking Layer in Polymer Electrolyte-Based Dye-Sensitized Solar Cells

    Vacuum kinetic spraying (VKS) was used to form a blocking layer (BL) in order to increase the efficiency of dye-sensitized solar cells. Nano-sized TiO2 powders were deposited on fluorine-doped tin oxide (FTO) gla...

    Jeeae Heo, P. Sudhagar, Hyungkwon Park, Woohyung Cho… in Journal of Thermal Spray Technology (2015)

  19. No Access

    Article

    Deposition of Workability-Enhancing Disposable Thick Fe Deposits on Fe-Si Alloy Sheets Using Thermal and Kinetic Spray Processes

    Fe-Si alloys are widely applied materials in industrial fields due to their magnetic properties. However, these alloys are difficult to manufacture due to the high oxidation affinity of Fe-Si alloys at high te...

    Jaeick Kim, Changhee Lee, Sanghoon Kim in Journal of Thermal Spray Technology (2015)

  20. No Access

    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 ...

    Yongjoon Kang, Kyutae Han, Joo Hyun Park… in Metallurgical and Materials Transactions A (2014)

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