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Table of Contents | February, 2024  Vol. 62   No.2 Previous Issue | Next Issue | Archive
In this issue:

Research Papers
73 Effect of High-Power Laser Cleaning for Surface Contaminants Removal on SS304L
SS304L 표면 오염물질 제거를 위한 고출력 레이저 클리닝 영향 분석
Soojin Choi, Hyun Jong Yoo, Jiyeon Choi, Jiwhan Noh, Heeshin Kang, Sanghoon Ahn, Junsu Park, Philgong Choi, Dohyun Kim, Yeonggyu Kim, Byeongju Kim, Ikgeun Jeon, Jeng O Kim, Hyonkee Sohn, Kyunghan Kim, Changkyoo Park
최수진, 유현종, 최지연, 노지환, 강희신, 안상훈, 박준수, 최필공, 김도현, 김영규, 김병주, 전익근, 김정오, 손현기, 김경한, 박창규
Korean J. Met. Mater. 2024;62(2):73-80.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.73

In this study, artificially formed corrosion and paint layers on 304L stainless steel (SS304L) specimen were removed using a kilowatt level high-power Nd:YAG laser. A laser power of 1140 W and a pulse duration of 89 ns were used for the corrosion removal, and a laser power of 850 W..... More

81 Hot Deformation Behavior of Inconel 718 Alloy Using Regression-based Dynamic Material Model and Applications in Ring Rolling Manufacturing
회귀기반의 동적재료모델을 이용한 Inconel 718 합금의 고온 변형 거동 분석 및 Ring rolling 공정의 적용
Seon Yeong Yang, Jin Wook Park, Jun Seok Yoon, Kwang Seok Lee, Dong-Geun Lee, Da Seul Shin
양선영, 박진욱, 윤준석, 이광석, 이동근, 신다슬
Korean J. Met. Mater. 2024;62(2):81-93.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.81

Inconel 718 nickel-based alloy is extensively used in the aerospace industry (e.g., gas turbine engine components) because of its excellent corrosion resistance and high mechanical properties at elevated temperatures. However, there is a certain limit to manufacturing the alloy through plastic deformation due to its high deformation resistance and complicated..... More

94 Fabrication and Electrical Characterization of p/n PbSe Diodes
p/n PbSe 다이오드의 제조 및 전기적 특성 평가
Sukho Hwangbo, Jewon Lee
황보석호, 이제원
Korean J. Met. Mater. 2024;62(2):94-105.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.94

Lead selenide (PbSe) diodes were fabricated using a magnetron sputtering process system with a pulsed DC power supply and a 2-inch PbSe target with a purity of 5N. For p-type PbSe thin films, the process variable was the oxygen ratio in the mixed gas of argon and oxygen. The electrical..... More

106 Modulating the Electrical Properties of Lithium-Doped Zinc Oxide: Interplay of Lithium Content, Oxygen Pressure, and Temperature
Byoungnam Park
Korean J. Met. Mater. 2024;62(2):106-114.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.106

This research elucidates the intricate interplay of lithium content, oxygen pressure, and temperature and their influence on the electrical properties of Lithium-doped zinc oxide (LZO). The electrical behavior of zinc oxide (ZnO), a prominent semiconductor material, can be modulated when doped with lithium (Li). Through systematic experimentation, we demonstrate that..... More

115 Simultaneous Removal of Gas-Phase Pollutants CO and NO Using Ni-Fe Bimetallic Oxides Catalyst
Ni-Fe bimetallic oxides 촉매의 CO, NO 가스상 오염물질 동시저감 특성
Woon-Gi Kim, Jae-Il Jung, Myeung-Jin Lee, Bora Jeong, Bora Ye, Heesoo Lee, Hong-Dae Kim
김운기, 정재일, 이명진, 정보라, 예보라, 이희수, 김홍대
Korean J. Met. Mater. 2024;62(2):115-124.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.115

Many studies have been conducted on methods to remove air pollutants. Among them, a representative commercial technology for reducing nitrogen oxides (NOX) is selective catalytic reduction (SCR) using NH3 as a reductant. However, the NH3-SCR technology has problems, such as the need for additional NH3 gas (Active-SCR), the fact that..... More

125 Effect of Molybdenum on the Mechanical and Corrosion Properties of Ti-xMo-2Fe Beta Alloys
Ti-xMo-2Fe 베타계 타이타늄 합금의 기계적 특성 및 부식 특성에 미치는 Mo의 영향 평가
Jeong-Yeon Park, Jae-Gwan Lee, Yong-Jae Lee, Dong-Geun Lee
박정연, 이재관, 이용재, 이동근
Korean J. Met. Mater. 2024;62(2):125-131.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.125

Titanium alloys are currently used in offshore industries. The titanium alloys used in offshore plants need to have excellent corrosion resistance and mechanical properties because offshore plants are exposed to harsh corrosive environments. At this time, the Ti-6Al-4V ELI alloy is mainly used in offshore plants because it has excellent..... More

132 Effect of Solution Temperature and Quench Delay on the Microstructure and Mechanical Properties of an Extruded Al-Mg-Si-Cu-Mn alloy
Al-Mg-Si-Cu-Mn 합금 압출재의 미세조직 및 기계적 성질에 미치는 용체화 온도와 퀜칭 지연의 영향
Jisu Kim, Jeki Jung, Hyun-Seok Cheon, Byung-joo Kim, Cha-Yong Lim, Su-Hyeon Kim, Yoon Suk Choi
김지수, 정제기, 천현석, 김병주, 임차용, 김수현, 최윤석
Korean J. Met. Mater. 2024;62(2):132-141.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.132

The effect of solution temperature and quench delay on the microstructure and mechanical properties of an extruded Al-Mg-Si-Cu-Mn alloy was investigated by employing differential scanning calorimetry, transmission electron microscopy, hardness test, and tensile test. The extruded specimens were held at 500 and 540 oC, respectively, for 80 min for solutionizing..... More

Review Papers
142 Recent Research Trends for Metal Oxide Nanostructures Based Chemoresistive Gas Sensors
금속산화물 나노구조체를 이용한 화학저항식 가스센서의 최신 연구동향
Jae-Kwon Ko, In-Hyeok Park, Young-Seok Shim, Kootak Hong, Ki Chang Kwon
고재권, 박인혁, 심영석, 홍구택, 권기창
Korean J. Met. Mater. 2024;62(2):142-153.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.142

In the modern era, advanced industrial and process technologies in various fields are known to produce harmful gases. These gases typically leak at low concentrations, but continuous exposure can cause serious harm to health and safety. Since human sensory organs cannot detect these risks or leaking hazardous gases, there has..... More

154 A Short Review of Recent Trends in Photovoltaics Research Using Van-der Waals Materials
반데르발스 소재 기반의 태양전지 적용에 관한 최신 연구동향 리뷰
Hyeong Gi Park, Jae-Hyun Lee, Keun Heo
박형기, 이재현, 허근
Korean J. Met. Mater. 2024;62(2):154-161.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.154

In recent years, the exploration of van der Waals materials has taken center stage in the field of advanced materials research. Studies have delved deeply into the multifaceted characteristics of these materials, and in particular their potential applications in solar cell technology. Van der Waals materials, named after the unique..... More

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