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Correlation between the Microstructure and Mechanical Properties of W-Bearing Ti-6Al-4V Alloys
Godwin Kwame Ahiale, In-Seok Kye, Young Sam Kwon, Yong-Jun Oh
Korean J. Met. Mater. 2021;59(6):357-364.   Published online 2021 May 26
DOI: https://doi.org/10.3365/KJMM.2021.59.6.357

W-containing Ti-6Al-4V alloys (W=0, 1, and 5 wt%) were fabricated by the powder injection molding process, and the corresponding effects of tungsten content on the mechanical properties and microstructure of the alloys were investigated. The alloy powders were sintered at 1200 °C and then hot-isostatically-pressed at 900 °C. The fabricated..... More

                   Web of Science 3  Crossref 4
Study on A-Site Compositional Mixing for the Shear Coating Process of FA-Based Lead Halide Perovskites
A-site 조성 제어를 통한 FA기반 페로브스카이트의 상안정화 및 전단 코팅 최적화 연구
Hansol Kim, Hyewon Gu, Minju Song, Choong-Heui Chung, Yong-Jun Oh, Chang Eun Song, Ki-Ha Hong
김한솔, 구혜원, 송민주, 정중희, 오용준, 송창은, 홍기하
Korean J. Met. Mater. 2021;59(5):321-328.   Published online 2021 Apr 6
DOI: https://doi.org/10.3365/KJMM.2021.59.5.321

Halide perovskite solar cells have been attracting tremendous attention as next-generation solar cell materials because of their excellent optical and electrical properties. Formamidinium lead tri-iodide (FAPbI3) exhibits the narrowest band gap among lead iodide perovskites and shows excellent thermal and chemical stability, also. However, the large-area coating of FAPbI3 needed..... More

Microstructure of Rhenium Coatings Deposited by CVD on Graphite and Mo Substrates
흑연 및 Mo 기판 위에 CVD 성장된 Re 코팅층의 미세조직
Sun Kyu Lee, Dong Yun Nam, Nam Ho Bae, Sung Taek Lim, Yong-Jun Oh
이선규, 남동윤, 배남호, 임성택, 오용준
Korean J. Met. Mater. 2018;56(3):197-204.   Published online 2018 Mar 6
DOI: https://doi.org/10.3365/KJMM.2018.56.3.197

Rhenium coatings were fabricated on a graphite substrate at 1100 and 1250 oC and a molybdenum substrate at 1150 and 1250 oC by chemical vapor deposition (CVD) using ReCl5 precursor, and the effects of deposition temperatures and substrates on microstructure and crystal orientation were investigated. The rhenium coating on graphite..... More

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