Zobrazeno 1 - 10
of 293
pro vyhledávání: '"Myoung Youp Song"'
Autor:
Myoung Youp SONG, Young Jun KWAK
Publikováno v:
Medžiagotyra, Vol 29, Iss 3, Pp 305-309 (2023)
Thermal analysis methods - such as TGA, DSC analysis, DTA, and TDS analysis - have been used in many reports to determine the activation energy for hydride decomposition. In our preceding work, we showed that the dehydriding rate of Mg-5Ni samples ob
Externí odkaz:
https://doaj.org/article/737d87a1017346a79953232ab721fc2e
Publikováno v:
Metals, Vol 14, Iss 2, p 227 (2024)
Milled MgH2, MgH2-10NaAlH4, MgH2-30NaAlH4, MgH2-50NaAlH4, and MgH2-2Ni-10NaAlH4 samples were prepared by milling in a planetary ball mill in hydrogen atmosphere (reactive mechanical milling, RMM). Decomposition temperatures of milled MgH2, NaAlH4, Mg
Externí odkaz:
https://doaj.org/article/7bd52c02e07a4dd5bdf30aa3cefa4329
Autor:
Myoung Youp SONG, Young Jun KWAK
Publikováno v:
Medžiagotyra, Vol 28, Iss 3, Pp 271-279 (2022)
We compared the hydrogenation and dehydrogenation properties of Mg-based alloys to which small amounts of transition elements (Ni and Ti), halides (TaF5 and VCl3), and complex hydrides (LiBH4 and NaAlH4) were added through grinding in a hydrogen atmo
Externí odkaz:
https://doaj.org/article/db1e40dd3bc04a339fbb09a18c937823
Autor:
Myoung Youp SONG
Publikováno v:
Medžiagotyra, Vol 28, Iss 2, Pp 209-216 (2022)
One of the candidates for metallic interconnects of solid oxide fuel cells is ferritic stainless steel, Crofer 22 APU. Ferritic stainless steel Crofer 22 APU specimens with different surface roughness were prepared by grinding with SiC powder papers
Externí odkaz:
https://doaj.org/article/a7dbfda5277c4c62bfcd1457b4b1de54
Publikováno v:
Micromachines, Vol 14, Iss 9, p 1777 (2023)
The main key to the future transition to a hydrogen economy society is the development of hydrogen production and storage methods. Hydrogen energy is the energy produced via the reaction of hydrogen with oxygen, producing only water as a by-product.
Externí odkaz:
https://doaj.org/article/e3a500dadfca432d8321913b293fa3f7
Autor:
Myoung Youp SONG, Eunho CHOI
Publikováno v:
Medžiagotyra, Vol 27, Iss 2, Pp 184-191 (2021)
A hydride-forming element titanium (Ti) was selected as an additive to improve the hydrogen uptake and release properties of MgH2. The hydrogen uptake and release properties of three Ti-added MgH2 alloys [named MgH2-xTi (x = 6, 12, and 15)] prepared
Externí odkaz:
https://doaj.org/article/d95626aae4d14389bcc5593778b92982
Autor:
Eunho CHOI, Myoung Youp SONG
Publikováno v:
Medžiagotyra, Vol 26, Iss 2, Pp 199-204 (2020)
Magnesium has excellent hydrogen-storage properties except low hydriding and dehydriding rates. In the present work, titanium (Ti) was chosen as an additive to increase the hydriding rate of Mg and the dehydriding rate of MgH2. 15 wt.% Ti was added t
Externí odkaz:
https://doaj.org/article/129d6405ca9d4154a4916428e713fc69
Autor:
Myoung Youp Song, Young Jun Kwak
Publikováno v:
Micromachines, Vol 13, Iss 11, p 1809 (2022)
Thermal analysis methods have been used in many reports to determine the activation energy for hydride decomposition (dehydrogenation). In our preceding work, we showed that the dehydrogenation rate of Mg-5Ni samples obeyed the first-order law, and t
Externí odkaz:
https://doaj.org/article/404a30390bfe46f4b8a3f9581773ff1a
Publikováno v:
Medžiagotyra, Vol 25, Iss 3, Pp 286-291 (2019)
Graphene was chosen as an additive to improve the hydrogen uptake and release properties of magnesium (Mg). Five weight percent of graphene was added to Mg or pre-milled Mg by milling in hydrogen (reactive milling). The milling processes and hydrogen
Externí odkaz:
https://doaj.org/article/947661199e3f48a1874df06a1dcf3126
Publikováno v:
Medžiagotyra, Vol 25, Iss 2, Pp 171-176 (2019)
The addition of CMC (Carboxymethylcellulose, Sodium Salt) may improve the hydrogen uptake-release properties of Mg since it has a relatively low melting point and the melting of CMC during transformation-involving milling may make the milled samples
Externí odkaz:
https://doaj.org/article/9a7a38c38b2e477e9d75291ca45aef17