Zobrazeno 1 - 10
of 246
pro vyhledávání: '"Do Kim"'
Autor:
Jae Young Park, Hyo-Kyu Kim, Hyung-Ki Park, Seongtak Kim, Hyun-Su Kang, Julien O. Fadonougbo, Young Do Kim, Jang-Won Kang, Ki Beom Park
Publikováno v:
Metals and Materials International. 28:565-571
In this study, we investigated the microstructures, hydrogen absorption kinetics, and surface oxides of a Ti0.2Zr0.2Nb0.2V0.2Cr0.17Fe0.03 high entropy alloy (HEA). The prepared HEA had a dual phase microstructure consisting of body-centered cubic (BC
Publikováno v:
Metals and Materials International. 28:1445-1454
To develop South Korea’s own SFR nuclear fuel cladding tube that has excellent high temperature creep characteristics, candidate alloys for a new cladding material that has better performance than the conventional Gr.92 (9Cr–2W–Nb–V) steel we
Publikováno v:
Powder Metallurgy. 64:396-403
Ti-based alloy powder is an excellent candidate as an additive manufacturing material, owing to its high strength-to-weight ratio, corrosion resistance and biocompatibility. However, molten Ti is h...
Publikováno v:
Journal of Welding and Joining. 38:563-568
Publikováno v:
JOM. 72:4594-4603
In this study, Al pack cementation was conducted on a high-entropy alloy (HEA), and the oxidation behavior of the pack-cemented HEA was investigated. The alloy was fabricated via powder metallurgy (PM). Al pack cementation was performed at 500°C and
Publikováno v:
Journal of Korean Powder Metallurgy Institute. 27:8-13
In this study, we investigated the effects of precipitates and oxide dispersoids on the high-temperature mechanical properties of oxide dispersion-strengthened (ODS) Ni-based super alloys. Two ODS Ni-based super alloy rods with different chemical com
Publikováno v:
Metals and Materials International. 27:985-994
In this study, precipitation strengthening alloying elements (C, N, V, Nb, Ta) and solution strengthening alloying elements (Cr, W, Mo, B) were appropriately combined to fabricate FC92B and FC92N alloys. Long-term aging heat treatments at 650 °C of
Autor:
Jong-Chan Park, Nipin Sp, Dong Young Kang, Young Mok Yang, Se Won Bae, Il Ho Kim, Hyoung Do Kim, Kyoung-Jin Jang
Publikováno v:
Agriculture, Vol 11, Iss 769, p 769 (2021)
Agriculture
Volume 11
Issue 8
Agriculture
Volume 11
Issue 8
Sulfur is an essential nutrient—along with nitrogen, phosphorus, and potassium—for plant growth and development. Sulfur is mostly supplied to crops through soil fertilizers. However, chemical fertilizers are overused to increase crop yields despi
Publikováno v:
Journal of Korean Powder Metallurgy Institute. 26:299-304
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 81:94-99
In this study, we investigated the high-temperature oxidation behavior of Mo-Si-B alloys with different volume fractions or sizes of intermetallic compound phases. Mo-Si-B alloys with uniformly dispersed intermetallic compound phases (Mo5SIB2 and Mo3