Korean Journal of Metals and Materials

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Microstructures and Oxidation Behaviors of Silicide Coated Nb Alloys by Halide Activated Pack Cementation Process
Halide activated pack cementation에 의한 silicide 코팅층의 형성에 따른 Nb 합금의 산화거동

Wonchul Yang, Choong-Heui Chung, Sangyeob Lee, Kyeong Ho Baek, Youngmoo Kim, Seong Lee, Joon Sik Park
양원철, 정중희, 이상엽, 백경호, 김영무, 이성, 박준식

Korean J. Met. Mater. 2020;58(8):507-514. Published online 2020 Aug 5
DOI: https://doi.org/10.3365/KJMM.2020.58.8.507

Abstract
In this study, we tried to improve the oxidation resistance of Nb-12Si (wt%) alloys at 1200 °C or higher through pack cementation coatings. Nb-12Si (wt%) alloys were prepared by arc-melting under Ar atmosphere. When the alloys were coated using pack powder mixtures composed of Si, Al₂O₃ and NaF, two silicide..... More

Oxidation Behaviors of Alloys Containing β/B2 Phases of Ti-45Al-Mo-Nb Alloys and Evaluation of the Oxidation Behaviors of Si Pack Cementation Coated Alloys
β/B2상을 포함한 Ti-Al-Mo-Nb 합금의 산화 거동과 실리콘 화합물 코팅을 통한 내산화성 개선

Kwangsu Choi, Youngbuem Song, Seonghoon Yi, Joon Sik Park
최광수, 송영범, 이승훈, 박준식

Korean J. Met. Mater. 2019;57(3):131-137. Published online 2019 Feb 8
DOI: https://doi.org/10.3365/KJMM.2019.57.3.131

Abstract
Alloys containing the β/B2 phases of Ti-45Al-3Mo, Ti-45Al-3Mo-2Nb and Ti-45Al-5Mo were prepared using an vacuum arc-melting machine. Heat-treatments were carried out at 1250 oC in an Ar atmosphere. The temperature of 1250 oC is the temperature region of phase α + γ + (β/B2), and the heat treatment condition which..... More

Web of Science 2 Crossref 2

Microstructural Evolution in Cast and HIP’ed Ingot Material of Beta Gamma TiAl Alloy by Two Step Cooling
Cast 와 HIP 으로 제작된 베타 감마 TiAl 합금의 열처리 후 2단계 냉각법을 통한 미세구조의 변화

Kwangsu Choi, Jeong Min Kim, Joon Sik Park, Young-won Kim
최광수, 김정민, 박준식, 김영원

Korean J. Met. Mater. 2018;56(5):335-341. Published online 2018 May 8
DOI: https://doi.org/10.3365/KJMM.2018.56.5.335

Abstract
The beta gamma alloys of Ti - 43.8Al - 4Nb - 2Cr - 0.2B - 0.2C at % (9CN) were prepared using induction skull melted (ISM) cast ingots. In order to make a fine fully lamellar structure with some minor phases, two step cooling was performed using two furnaces after..... More

Crossref 3

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