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Table of Contents | October, 2022  Vol. 60   No.10 Previous Issue | Next Issue | Archive
In this issue:

Research Papers
723 Enhanced High Temperature Oxidation Resistance of the Conventional Ti-48Al-2Nb-2Cr Alloy through Carbon Pack Cementation and Analysis of the Carbon Diffusion Path
탄소 팩 세멘테이션 (Pack cementation) 공정을 통한 상용 Ti-48Al-2Nb-2Cr 합금의 고온 내산화성 개선과 탄소 확산 경로 해석
Donghyeon Kim, Kwangsu Choi, Joonsik Park, Seonghoon Yi
김동현, 최광수, 박준식, 이승훈
Korean J. Met. Mater. 2022;60(10):723-731.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.723

Abstract
γ-TiAl alloys have attracted interest as lightweight materials for structural applications at temperatures below 800 o C. With recent improvements in microstrutural control of the γ-TiAl alloys, resulting in excellent creep properties and high temperature strength, their use can be extended to temperatures higher than 800 o C. To increase..... More

                   Web of Science 1  Crossref 1
732 Fabrication and Surface Modification of Macroporous Silica Fibers by Electrospinning for Super Adsorbent of Oil
Hoai Han Nguyen, Thi Thu Hien Nguyen, Young-Sang Cho
Korean J. Met. Mater. 2022;60(10):732-743.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.732

Abstract
Silica fibers were fabricated by sol-gel reaction and an electrospinning process. A high voltage source of electricity was applied to the prepared spinning solution to form the fibers. Macroporous silica fibers were prepared using polystyrene (PS) nanospheres as templates after calcination. The pore size could be controlled by adjusting the..... More

                   Web of Science 4  Crossref 4
744 Lithium Recovery from NCM Lithium Ion Battery by Carbonation Roasting Followed by Water Leaching
NCM계 리튬이온 전지 양극재의 탄산화 배소와 수침출 의한 Li 회수
Dae-Hyeon Lee, So-Yeon Lee, So-Yeong Lee, Ho-Sang Sohn
이대현, 이소연, 이소영, 손호상
Korean J. Met. Mater. 2022;60(10):744-750.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.744

Abstract
Lithium is a representative rare metal and ranks 32nd in abundance among elements in the earth’s crust. Lithium is used in a variety of applications, including the production of organolithium compounds, as an alloying addition to aluminum and magnesium, and as the anode in rechargeable lithium ion batteries especially for..... More

                   Crossref 2
751 Selective Extraction of Cu(II) from the Hydrochloric Acid Leaching Solution of Spent Lithium-Ion Batteries by a Mixture of Aliquat 336 and LIX 63
Jiangxian Wen, Man Seung Lee
Korean J. Met. Mater. 2022;60(10):751-759.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.751

Abstract
The smelting reduction of spent LIBs produces metallic alloys containing Co, Cu, Fe, Mn, and Ni. These metallic alloys can be completely dissolved by 2 M HCl solution containing H2O2 as an oxidizing agent. Extraction of the leaching solution with D2EHPA results in a Fe(III) free raffinate. In this work,..... More

                   Web of Science 3  Crossref 2
760 Electrospun Nanofiber-Based Electrodes Composed of Core-Shell (PVDF)-(Al) Structures for Application to Flexible Electronics
Heesung Park, Kwanlae Kim
Korean J. Met. Mater. 2022;60(10):760-768.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.760

Abstract
Nanostructured transparent conductors have been studied intensively for application to flexible and transparent electronic devices. Among diverse nanomaterials, electrospun nanofibers provide several advantages over other nanomaterials, including a high aspect ratio, uniform distribution, and a facile fabrication process. In the present study, an electrode composed of a core-shell (PVDF)-(Al) structured..... More

                   Web of Science 1  Crossref 3
769 Ultrathin MgO Nanosheets Fabricated by Thermal Evaporation Method in Air at Atmospheric Pressure
대기압의 공기 분위기에서 열증발법에 의해 제작된 초박형 MgO 나노시트
Geun-Hyoung Lee
이근형
Korean J. Met. Mater. 2022;60(10):769-773.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.769

Abstract
Ultrathin MgO nanosheets were successfully synthesized by thermal evaporation of a mixture of Mg and graphite powders as the source material. The synthesis was performed at 1000 oC in air. Scanning electron microscopy showed that the two-dimensional MgO nanosheets had widths of several micrometers and the thickness of less than..... More

                   Web of Science 2  Crossref 2
774 Bronze Production Systems in 6-7 Centuries South Korea: Micro-Structural and Micro-Chemical Analysis of Slags
슬래그의 미세구조 및 화학분석을 통한 6-7세기 한국의 청동 야금 기술 연구
So Jin Kim, Woo Rim Han, Dong Hyeok Moon, Na Ra Lee, Young Do Kim
김소진, 한우림, 문동혁, 이나라, 김영도
Korean J. Met. Mater. 2022;60(10):774-781.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.774

Abstract
Metallurgical remains such as crucible, mould, slag and tuyere are generated in the production of bronze. The analysis of slag in particular can be used to identify the raw materials, processes and environments (temperature and condition) employed in the bronze fabrication . The Gwanbuk-ri site in Buyeo is known as..... More

                   Web of Science 1  Crossref 1
782 Influence of Trace Amounts of Sulfur on the Microstructure and Mechanical Properties of Directionally Solidified Ni-Based Superalloy GTD-111
일방향응고한 GTD-111 초내열합금의 황 함량에 따른 미세조직 및 고온 기계적 특성
Dong-Soo Kang, Hyungsoo Lee, Dae Won Yun, Hi Won Jeong, Young-Soo Yoo, Seong-Moon Seo
강동수, 이형수, 윤대원, 정희원, 유영수, 서성문
Korean J. Met. Mater. 2022;60(10):782-792.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.782

Abstract
The influence of trace amounts of sulfur (S) on the microstructural evolution, tensile and creep properties in directionally solidified (DS) Ni-based superalloy GTD-111 were systematically investigated. Doping of S in the range of < 1 to 154 ppm resulted in the formation of a Ti2SC-type carbosulfide phase near the coarse..... More

                   Web of Science 1  Crossref 2
793 Real-Time Position Detecting of Large-Area CNT-based Tactile Sensors based on Artificial Intelligence
인공지능을 기반으로 한 대면적 CNT 기반 촉각 센서의 실시간 위치 탐색 연구
Min-Young Cho, Seong Hoon Kim, Ji Sik Kim
조민영, 김성훈, 김지식
Korean J. Met. Mater. 2022;60(10):793-799.   Published online 2022 Sep 29
DOI: https://doi.org/10.3365/KJMM.2022.60.10.793

Abstract
For medical device and artificial skin applications, etc., large-area tactile sensors have attracted strong interest as a key technology. However, only complex and expensive manufacturing methods such as fine pattern alignment technology have been considered. To replace the existing smart sensor, which has to go through a complicated process, a..... More

                   Web of Science 1  Crossref 1
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