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A Novel Al-Al<sub>2</sub>O<sub>3</sub> Non-Skid Composite Coating with Improved Wear Resistance Fabricated by Twin Wire Arc Spraying
Twin wire arc spray 공정을 통해 제작된 Al-Al2O3복합소재 미끄럼 방지 코팅의 우수한 마모 저항성
Hansol Kwon, Youngjin Park, Yongjin Kang, Dohyun Kim, Uk Hee Nam, Eungsun Byon
권한솔, 박영진, 강용진, 김도현, 남욱희, 변응선
Korean J. Met. Mater. 2024;62(4):257-266.   Published online 2024 Mar 29
DOI: https://doi.org/10.3365/KJMM.2024.62.4.257

Abstract
In this study, novel non-skid Al-Al2O3 coatings with improved wear resistance were fabricated using twin wire arc spray (TWAS). TWAS Al coating was prepared as a reference sample and representative TWAS parameters (working distance, process gas pressure, arc current) were controlled to fabricate different Al-Al2O3 coatings. The Al-Al2O3 coatings showed..... More

                
Research on Thermal Properties and High Temperature Exposure Behavior of Non-Skid Coating Fabricated by Twin Wire Arc Spraying
Twin wire arc spray 용사코팅 공정을 통해 제작된 미끄럼 방지 코팅의 열적 특성 및 고온노출 거동 연구
Hansol Kwon, Youngjin Park, Uk Hee Nam, Eungsun Byon
권한솔, 박영진, 남욱희, 변응선
Korean J. Met. Mater. 2023;61(9):642-651.   Published online 2023 May 14
DOI: https://doi.org/10.3365/KJMM.2023.61.9.642

Abstract
Conventional non-skid coatings for marine construction contain polymeric materials. These materials are generally susceptible to high temperature environments because of their low thermal conductivity and thermal resistance. A metal-based non-skid coating has great potential for high temperature applications, yet, there has only been limited research. In this study, twin wire..... More

                   Web of Science 1  Crossref 1
Comparative Research on Corrosion Resistant Non-Skid Al and Al-3%Ti Coating Fabricated by Twin Wire arc Spraying
Twin wire arc spray 용사코팅 공정을 통해 제작된 내부식성 Al 및 Al-3%Ti 미끄럼 방지 코팅의 비교 연구
Hansol Kwon, Youngjin Park, Uk Hee Nam, Eunkyung Lee, Eungsun Byon
권한솔, 박영진, 남욱희, 이은경, 변응선
Korean J. Met. Mater. 2023;61(4):242-251.   Published online 2023 Mar 22
DOI: https://doi.org/10.3365/KJMM.2023.61.4.242

Abstract
To ensure the lifetime of marine constructions and the safety of workers and pedestrians, corrosion protective non-skid coating is an effective solution. However, the conventional polymer-based coating has some limitations. In this study, newly-suggested Al and Al-3%Ti coatings were deposited on high strength low alloyed steel substrate using twin wire..... More

                   Web of Science 2  Crossref 2
Properties of Y<sub>2</sub>O<sub>3</sub> Dispersion Strengthened W Fabricated by Ultrasonic Spray Pyrolysis and Pressure Sintering
초음파 분무 열분해와 가압소결로 제조한 이트리아 분산입자 강화 텅스텐의 특성
Eui Seon Lee, Youn Ji Heo, Ji Young Kim, Young-In Lee, Myung-Jin Suk, Sung-Tag Oh
이의선, 허연지, 김지영, 이영인, 석명진, 오승탁
Korean J. Met. Mater. 2023;61(3):170-174.   Published online 2023 Feb 24
DOI: https://doi.org/10.3365/KJMM.2023.61.3.170

Abstract
The effects of fabrication method on the microstructure and sinterability of W-1 wt% Y2O3 were analyzed. W composite powders dispersed with Y2O3 particles were synthesized by the ultrasonic spray pyrolysis process or the ultrasonic spray pyrolysis/polymer solution process. A dense composite was fabricated by a combination of spark plasma sintering..... More

                
Microstructure and Sintering Behavior of Fine Tungsten Powders Synthesized by Ultrasonic Spray Pyrolysis
초음파 분무 열분해법으로 제조한 텅스텐 미세분말의 미세조직과 소결 거동
Hyeonhui Jo, Jeong Hyun Kim, Young-In Lee, Young-Keun Jeong, Sung-Tag Oh
조현희, 김정현, 이영인, 정영근, 오승탁
Korean J. Met. Mater. 2021;59(5):289-294.   Published online 2021 Apr 6
DOI: https://doi.org/10.3365/KJMM.2021.59.5.289

Abstract
The powder microstructure and sintering behavior of W prepared by ultrasonic spray pyrolysis and spark plasma sintering were investigated. Fine-grained W powders were synthesized by ultrasonic spray pyrolysis using an ammonium metatungstate hydrate solution and hydrogen reduction. The XRD analysis of the powder, pyrolyzed below 600 oC, showed tungsten oxide..... More

                   Web of Science 2  Crossref 2
Tensile and Compressive Deformation Behaviors of High-Strength Cu Bulk Material Manufactured by Cold Spray
저온 분사 공정으로 제조된 초고강도 Cu 벌크 소재의 인장 및 압축 변형 거동
Young-Kyun Kim, Kee-Ahn Lee
김영균, 이기안
Korean J. Met. Mater. 2020;58(11):759-767.   Published online 2020 Oct 15
DOI: https://doi.org/10.3365/KJMM.2020.58.11.759

Abstract
In this study, high-strength pure Cu bulk material was manufactured using a cold spray additive manufacturing process, and its microstructure, tensile and compressive deformation behaviors were investigated and compared. The cold spray additive manufactured Cu bulk material showed a heterogeneous grain structure consisting of fine-grains and coarse-grains, and only α..... More

                   Web of Science 1  Crossref 1
Nanostructuring Behavior of NiCrBSi and CoCrWC Thermal Spray Coatings Formed by Temperature-Controlled Laser Heat Treatment
온도 제어형 레이저 열처리에 따른 NiCrBSi 및 CoCrWC 용사 코팅층의 나노구조 형성 거동
Eun-Joon Chun
천은준
Korean J. Met. Mater. 2020;58(4):247-256.   Published online 2020 Mar 10
DOI: https://doi.org/10.3365/KJMM.2020.58.4.247

Abstract
.For surface hardening of a continuous casting mold component, a thermal spray coating of NiCrBSi (Metco-16C) and CoCrWC (Stellite-1) was performed followed by laser heat treatment of the coatings. To support selective modification of the thermal spray coating, a metallurgically determined surface temperature was maintained during the laser heat treatment,..... More

                   Web of Science 4  Crossref 5
Synthesis of Porous Particles by Electrospray-Assisted Self-Assembly for Water-Repellent or Photocatalytic Surfaces
Young-Sang Cho, Younghyun Lee, Nahee Ku, Sugueun Ji, Young Seok Kim
Korean J. Met. Mater. 2020;58(2):112-124.   Published online 2020 Jan 8
DOI: https://doi.org/10.3365/KJMM.2020.58.2.112

Abstract
In this study, an electrospray technique was used for the synthesis of macroporous ceramic particles, such as silica or titania, by a colloidal templating method. For this purpose, a suspension of polystyrene nanospheres was synthesized by dispersion polymerization for use as sacrificial templates. The feed solution containing a ceramic precursor..... More

                   Web of Science 5  Crossref 4
Doping Effect of Indium on Zinc-tin Oxide Thin-Film Transistor Using Electrohydrodynamic Jet Spray Technology
전기수력학젯 분산 기술을 이용한 아연-주석 산화물 박막트랜지스터의 인듐 도핑 효과
Woon-Seop Choi
최운섭
Korean J. Met. Mater. 2019;57(4):258-263.   Published online 2019 Apr 5
DOI: https://doi.org/10.3365/KJMM.2019.57.4.258

Abstract
The effect of indium doping on zinc-tin oxide thin-film transistor was investigated using electrohydrodynamic (EHD) jet spray technology. EHD jet spray is a new and unique drop-on-demand patterning technology for printed electronics. After optimizing process parameters, the EHD jet spraying conditions were determined to be a voltage of 4.5 kV,..... More

                   Web of Science 2  Crossref 2
Corrosion Resistance and Adhesion of Paint Coating Film on Zn-Mg-Al Hot-Dip Galvanized Steel Sheets
아연-마그네슘-알루미늄 합금도금강판의 도장 내식성 및 밀착성
Jae-Won Lee, Bora Park, Sung Jin Kim
이재원, 박보라, 김성진
Korean J. Met. Mater. 2019;57(2):77-83.   Published online 2019 Jan 9
DOI: https://doi.org/10.3365/KJMM.2019.57.2.77

Abstract
Zn-Al-Mg alloy galvanized steel sheets have excellent corrosion resistance and improved cut-edge corrosion resistance. Most of the galvanized steel sheets used for outdoor applications are coated again on the galvanizing layer, or after a plastic film is laminated. As the corrosion products formed by the corrosion of Zn accumulate over..... More

                   Web of Science 10  Crossref 7
Effect of Carrier Gas on Microstructure and Macroscopic Properties of Tantalum Coating Layer Manufactured by Kinetic Spray Process
Kinetic spray 공정으로 제조된 탄탈럼 코팅층의 미세조직 및 물성에 미치는 송급 가스의 영향
Ga-Ryung Kim, Young-Kyun Kim, Hyung-Jun Kim, Kee-Ahn Lee
김가령, 김영균, 김형준, 이기안
Korean J. Met. Mater. 2018;56(5):360-365.   Published online 2018 May 8
DOI: https://doi.org/10.3365/KJMM.2018.56.5.360

Abstract
This study attempted to utilizing the kinetic spray process to manufacture tantalum coating layer and investigated the effect of carrier gas on the microstructure and macroscopic properties of the coating layer. The initial powder feed stock was a massive powder with an average particle size of 24.35 μm and 99.99%..... More

       Crossref 1
Characteristics of NiOYSZ Gas Sensor Employing YSZ Solid Electrolyte Prepared by Thermal Spray Coating Method
용사코팅 YSZ 고체 전해질이 응용된 NiO・YSZ 가스센서의 특성
Il-Hwan Bang, Sung-Yong Cho
방일환, 조성용
Korean J. Met. Mater. 2017;55(11):819-824.   Published online 2017 Oct 31
DOI: https://doi.org/10.3365/KJMM.2017.55.11.819

Abstract
A mixed potential-type NiO・YSZ (yttria stabilized zirconia) gas sensor employing 8YSZ solid electrolyte film was fabricated using a thermal spray coating method, and tested in a NO2 atmosphere at various operating temperatures. The thermal spray coating method is useful for mass producing solid electrolytes without a forming, sintering or bonding..... More

    
Effects of Dispersion Solvent on the Spray Coating Deposition of Silver Nanowires
스프레이 코팅법으로 증착된 은나노선의 특성에 미치는 분산용매의 영향
Ji-Hye Choe, A-Yeon Jang, Jeong-Heui Kim, Choong-Heui Chung, Ki-Ha Hong
최지혜, 장아연, 김정희, 정중희, 홍기하
Korean J. Met. Mater. 2017;55(7):509-514.   Published online 2017 Jul 4
DOI: https://doi.org/10.3365/KJMM.2017.55.7.509

Abstract
Silver nanowire (AgNWs) networks offer a promising approach for producing cost effective transparent electrode materials. However, high temperature annealing is necessary to achieve low sheet resistance, which limits the use of AgNWs for low temperature processing applications such as flexible electronics, and perovskites solar cell fabrication. This study shows that..... More

       Crossref 2
Fabrication of Porous Titania Particles from Complex Fluids by Spray Drying Process and Their Applications
Young-Sang Cho
Korean J. Met. Mater. 2017;55(4):264-273.   Published online 2017 Apr 6
DOI: https://doi.org/10.3365/KJMM.2017.55.4.264

Abstract
In this study, a spray drying system was used to prepare macroporous titania micro-particles for applications including UV blocking materials and photocatalysts. To synthesize the macroporous particles a colloidal templating method using polymeric beads as sacrificial templates and a titania nano-colloid as precursor material was adopted. The resulting porous titania..... More

       Crossref 1
Composite Materials
Effect of Added Ni on the Deposition State of Kinetic Sprayed Al-Ni Composite
첨가된 Ni이 저온 분사된 Al-Ni 복합체의 적층 상태에 미치는 영향
Jaeick Kim, Seungtae Lee, Changhee Lee
김재익, 이승태, 이창희
Korean J. Met. Mater. 2016;54(9):688-697.   Published online 2016 Sep 5
DOI: https://doi.org/10.3365/KJMM.2016.54.9.688
Abstract
The liners of shaped charges, a type of weapon, should possess good penetration ability and explosive power. Conventionally this is achieved by fabricating reactive Al-Ni composite layers on the Cu liners, which by themselves have fine penetration ability but poor explosive power. However, there are no studies related to the... More
    
Powder Metallurgy
Microstructure Changes of ZrO<sub>2</sub>/W/Mo Coating Layers on Graphite after Heat Treatment at 2100
용사 코팅한 ZrO2/W/Mo-Graphite 코팅층의 2100 ℃ 열처리 후 미세조직 변화에 관한 연구
Gyu Baek Ahn, Kyeong Hwan Choe, Sang Sub Kim, Gue Serb Cho
안규백, 최경환, 김상섭, 조규섭
Korean J. Met. Mater. 2016;54(8):559-565.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.559

Abstract
A tungsten coating was deposited onto a graphite substrate using the atmospheric plasma spraying (APS) technique. In order to increase the adhesion strength between the metallic tungsten(W) and graphite, a molybdenum (Mo) interlayer was pre-deposited onto the graphite surface by utilizing the APS technique. Also, after deposition of a APS-W..... More

       Crossref 4
Corrosion & Surface Treatment
Fabrication of Decorative Coating/Patterning of Ceramic Pigment Powder Using Vacuum Kinetic Spraying Process
진공상온분사 공정을 이용한 세라믹 도료 분말의 장식용 코팅 및 패터닝 제조
Hyungkwon Park, Jinyoung Kim, Hansol Kwon, Seongtae Lee, Changhee Lee
박형권, 김진영, 권한솔, 이승태, 이창희
Korean J. Met. Mater. 2016;54(8):552-558.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.552

Abstract
Vacuum kinetic spraying (VKS) is a relatively advanced process, by which a dense film can be fabricated at room temperature. Various materials including ceramic, metal, polymer and composite can be used as the substrate and coating materials. In this research, red and blue color films were successfully fabricated on glass..... More

    
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