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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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슬래그 내 산화물의 상관관계로 보는 고대 제철 발전사 연구
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오광섭, 정원섭
Korean J. Met. Mater.
2023;61(4):291-300. Published online 2023 Mar 22
DOI:
https://doi.org/10.3365/KJMM.2023.61.4.291
Abstract
A lot of slag was produced by ancient production processes such as smelting, melting, and refining. Iron slag has information that can be used to determine the characteristics of the site, the iron-making process and manufacturing date, but there is a limit to reading information through visual observation and nondestructive.....
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레이저 급속 표면용융에 따른 일방향응고 247LC 초내열합금의 에피택셜 성장 및 응고균열 억제 방안
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김경민, 천은준
Korean J. Met. Mater.
2023;61(4):252-260. Published online 2023 Mar 22
DOI:
https://doi.org/10.3365/KJMM.2023.61.4.252
Abstract
In this study, the relationship between solidification cracking and epitaxial growth behavior with the high-speed laser surface melting of a directionally solidified 247LC superalloys was fundamentally and metallurgically investigated, to develop a successful welding procedure for the next generation of gas turbine blades. Under typical laser surface melting conditions (scan.....
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Crossref 2
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Al-Si 도금된 핫스탬핑 보론강의 볼트 프로젝션 용접시 예열 통전이 용융 거동에 미치는 영향
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김재훈, 전현욱, 천주용, 김재원, 김재득, 지창욱
Korean J. Met. Mater.
2021;59(12):893-903. Published online 2021 Nov 19
DOI:
https://doi.org/10.3365/KJMM.2021.59.12.893
Abstract
This study evaluated the effect of preheating on early stage melting behavior of a Al-Si coated hot stamped boron steel bolt during projection welding. A large amount of heat was generated in the early stage of projection welding. Because of the large heat generation, a rapid collapse of the projection.....
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Crossref 2
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Korean J. Met. Mater.
2021;59(3):149-154. Published online 2021 Feb 19
DOI:
https://doi.org/10.3365/KJMM.2021.59.3.149
Abstract
In this study, an effective method is demonstrated for fabricating titanium sputtering targets, which are used to fabricate thin films in the semiconductor industry. The method is an alternative to the existing electron beam melting (EBM) process under high vacuum. Titanium sputtering targets used in the production of semiconductors must.....
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SLM공정에 의해 제조된 316L 스테인레스 스틸 격자구조체의 압축 거동 평가
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이진명, 이정음, 김지훈, 김상우
Korean J. Met. Mater.
2020;58(4):227-233. Published online 2020 Mar 10
DOI:
https://doi.org/10.3365/KJMM.2020.58.4.227
Abstract
Lattice structures are multi-functional materials with various advantages such as high specific stiffness, high energy absorption capacity and good thermal management capability. Recently, the development of manufacturing technologies using metal powders has facilitated fabrication of complex products; consequently, interest in lattice structures has grown. In this work, two kinds of.....
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Web of Science 1
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Selective laser melting 공정으로 제조된 AISI 316L 합금의 상온 및 고온 압축 변형 거동
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함기수, 박순홍, 이기안
Korean J. Met. Mater.
2019;57(5):295-303. Published online 2019 May 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.5.295
Abstract
This study investigated the microstructure and compressive properties (at room & high temperatures) of Fe-Cr-Ni based AISI 316L alloy, manufactured by selective laser melting process. The effect of stress relieving heat treatment on the microstructure and mechanical properties also examined. Regardless of the stress relieving heat treatment, the SLMed AISI.....
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레이저 용융 적층 기술을 이용한 AISI M4와 CPM15V 분말 적층부의 미세 조직 및 마모 특성에 관한 연구
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백경윤, 신광용, 이기용, 심도식
Korean J. Met. Mater.
2018;56(6):430-439. Published online 2018 Jun 4
DOI:
https://doi.org/10.3365/KJMM.2018.56.6.430
Abstract
AISI M4 and CPM15V are used as tool steels since they have high hardness and wear resistance. This study is concerned with die and mold hardfacing using laser melting deposition with M4 and CPM15V powders. For this purpose, the two types of metal powders were deposited on SKD11 base metal,.....
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실링라인을 이용한 플렉시블 OLED 봉지
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문철희
Korean J. Met. Mater.
2018;56(4):313-320. Published online 2018 Apr 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.4.313
Abstract
Encapsulation of the flexible OLED devices requires a low temperature process and great barrier characteristics against the permeation of water vapor and oxygen. We suggest a new OLED encapsulation method for the flexible OLED device using a sealing line instead of the TFE encapsulation. For the experiments, polyimide substrate with.....
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Korean J. Met. Mater.
2017;55(12):905-910. Published online 2017 Dec 4
DOI:
https://doi.org/10.3365/KJMM.2017.55.12.905
Abstract
The boron alkali molybdate glass system was investigated as lead-free low-temperature melting sealing materials, with different boron oxide contents between 0 and 8 mol%. The glasses were characterized using X-ray diffraction (XRD), differential scanning calorimetry (DSC), infrared spectroscopy (IR), and by densities. Their chemical properties were measured by their dissolution.....
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슬래그 연화 용융 거동에 미치는 첨가제 입도의 영향
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오준석, 이재홍, 이준호
Korean J. Met. Mater.
2017;55(8):566-571. Published online 2017 Aug 1
DOI:
https://doi.org/10.3365/KJMM.2017.55.8.566
Abstract
The Paris climate change agreement made a commitment to keep global warming below 2 ℃. The Korean government confirmed that it would seek a 37% reduction in CO
2
emissions by 2030 from the Business As Usual level. CO
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emissions from Korean iron and steel industries account for approximately 15.4% of.....
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세륨 인산염계 유리에서 세륨의 산화수와 촉매특성에 대한 용융조건의 영향
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김주형, 김대성, 류봉기
Korean J. Met. Mater.
2017;55(2):144-149. Published online 2017 Feb 2
DOI:
https://doi.org/10.3365/KJMM.2017.55.2.144
Abstract
As with any solvent, stabilizing a multivalent element at a given oxidation level in the glass depends on the thermodynamic conditions. The effects of temperature in the oxidation-reduction equilibrium have been previously noted with higher temperatures being conductive to reduced states. 30Ce
2
O-70P
2
O
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binary system glasses were prepared. The effects of.....
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