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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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Korean J. Met. Mater.
2024;62(4):292-298. Published online 2024 Mar 29
DOI:
https://doi.org/10.3365/KJMM.2024.62.4.292
Abstract
Poly(3-hexylthiophene) (P3HT), a semiconducting polymer, is integral to the development of organic electronic devices. Its optoelectronic properties are significantly influenced by the nature of its intermolecular interactions, predominantly classified as J-type and H-type couplings. This study investigates the effect of sonication on the dielectric properties of P3HT, focusing on the.....
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균질화 AA 2026 합금의 고온 변형과 미세 구조 변화
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강현우, 김수빈, 장병록, 김희국
Korean J. Met. Mater.
2023;61(5):338-346. Published online 2023 Apr 20
DOI:
https://doi.org/10.3365/KJMM.2023.61.5.338
Abstract
AA 2026 is an improved version of AA 2024, an alloy with added Zr to reduce Fe and Si content and inhibit recrystallization during hot working. Al 2026 alloy has high strength and high damage resistance, so it is widely used in aircraft parts. In this study, in order to.....
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Web of Science 1
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고강도 냉간압조용 중탄소 Cr-Mo 합금강의 고온변형특성 및 동적재결정 거동 평가
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조용덕, 이희주, 남성실, 강현우, 장병록
Korean J. Met. Mater.
2022;60(6):423-431. Published online 2022 May 24
DOI:
https://doi.org/10.3365/KJMM.2022.60.6.423
Abstract
The hot deformation behavior of medium-carbon Cr-Mo alloy, which has been developed for high strength cold-heading quality wire rod, was investigated to evaluate its hot workability. A flow curve was derived using the hot torsion test, under conditions with temperatures of 1173-1273 K and strain rates of 0.1-1.0 s
-1
. At.....
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Web of Science 2
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저온 분사 공정으로 제조된 초고강도 Cu 벌크 소재의 인장 및 압축 변형 거동
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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.....
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Web of Science 1
Crossref 1
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Korean J. Met. Mater.
2020;58(8):515-521. Published online 2020 Jul 27
DOI:
https://doi.org/10.3365/KJMM.2020.58.8.515
Abstract
A method for evaluating residual stress using an instrumented indentation test was developed some decades ago. More recently, another method was developed, using a Knoop indenter. The conversion factor ratio, which is one of the key factors in the evaluation algorithm, has been taken to be 0.34, although this value.....
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Web of Science 2
Crossref 3
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탄점소성 구성모델을 활용한 폴리우레탄 폼의 밀도 및 변형률 속도 의존 변형률 경화-연화 연성 재료 거동 규명
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김태림, 이치승
Korean J. Met. Mater.
2020;58(5):357-367. Published online 2020 Apr 20
DOI:
https://doi.org/10.3365/KJMM.2020.58.5.357
Abstract
Polyurethane foam (PUF) is one of the most well-known cellular materials and is widely employed in various industrial and biomedical fields thanks to its many advantages. These include mechanical and material characteristics such as low density and thermal conductivity, and high specific elastic modulus and strength. Despite of these advantages,.....
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Web of Science 4
Crossref 3
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Korean J. Met. Mater.
2019;57(12):817-827. Published online 2019 Nov 22
DOI:
https://doi.org/10.3365/KJMM.2019.57.12.817
Abstract
The use of locally developed high performance alloys in power plants has become essential in the past ten years. Application of these alloys has been difficult because of a shortage of field demonstration testing, and the lack of lab-based test data. In this work, three types of locally developed heat.....
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Crossref 3
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광환원반응을 통한 TiO
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/Pd 복합광촉매 제조와 광촉매 특성
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이종호, 안홍주, 윤정일, 김영직, 서수정, 오한준
Korean J. Met. Mater.
2019;57(8):510-520. Published online 2019 Jul 8
DOI:
https://doi.org/10.3365/KJMM.2019.57.8.510
Abstract
To decompose dye in aqueous solution, Pd nanoparticle-decorated TiO
2
nanotube photocatalysts were fabricated through electrochemical anodization and photoreduction processes. Morphological and surface characterization of the TiO
2
/Pd heterojunction photocatalyst, as well as photoelectrochemical behaviors, were investigated by X-ray diffraction, UV/Vis diffuse reflectance and photocurrent response. It was found that the precipitated.....
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Web of Science 5
Crossref 3
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연속주조의 유압식 주형진동 제어인자 고찰
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강기판, 김성연, 이상현
Korean J. Met. Mater.
2017;55(5):320-327. Published online 2017 May 9
DOI:
https://doi.org/10.3365/KJMM.2017.55.5.320
Abstract
In order to improve the flexibility of the oscillation pattern for a wide range of casting speeds, a hydraulic cylinder is used to oscillate the mold that moves up and down according to the stroke and frequency given by controller. Currently, hydraulic oscillators are commonly used in continuous casting facilities,.....
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