Electron microscopy and hydriding properties of MgYNi 4 synthesized by mechanical alloying

Yasuyuki Kitano; K. Yamada; M. Miyamoto; S. Orimo; H. Fujii; K. Aono; E. Tanabe

doi:10.1016/S0925-8388(01)01531-6

Electron microscopy and hydriding properties of MgYNi ₄ synthesized by mechanical alloying

Yasuyuki Kitano, K. Yamada, M. Miyamoto, S. Orimo, H. Fujii, K. Aono, E. Tanabe

Research output: Contribution to journal › Conference article › peer-review

8 Citations (Scopus)

Abstract

The ternary alloy, MgYNi ₄, was synthesized by mechanical alloying (MA). Its microscopic structures and hydriding properties were studied. The annealing of the alloy at 773 K was also studied. The alloy consists of nanocrystals of less than 10 nm in diameter. The capacity of the hydrogen atoms in the alloy increases with the increasing size of the nanocrystals. The crystal structure was found to be the C15 type Laves phase structure for the MA-treated alloy, while crystal structure of the as annealed alloy was the ordered C15 type structure which is conventionally called C15b type and is formally called AuBe ₅ type structure. The hydrogen capacity in the alloy might have a strong relation to the atomic arrangement of this alloy.

Original language	English
Pages (from-to)	292-295
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	330-332
DOIs	https://doi.org/10.1016/S0925-8388(01)01531-6
Publication status	Published - 2002 Jan 17
Externally published	Yes
Event	Proceedings of the International Symposium on Metal-Hydrogen (MH 2000) - Noosa Heads, QLD, Australia Duration: 2000 Oct 1 → 2000 Oct 6

Keywords

Crystal structure
Hydrogen storage
Mechanical alloying
Nanostructures
Transmission electron microscopy

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0925-8388(01)01531-6

Cite this

@article{52fba1ae2fa1426e91bc2396ceec73f7,

title = "Electron microscopy and hydriding properties of MgYNi 4 synthesized by mechanical alloying",

abstract = "The ternary alloy, MgYNi 4, was synthesized by mechanical alloying (MA). Its microscopic structures and hydriding properties were studied. The annealing of the alloy at 773 K was also studied. The alloy consists of nanocrystals of less than 10 nm in diameter. The capacity of the hydrogen atoms in the alloy increases with the increasing size of the nanocrystals. The crystal structure was found to be the C15 type Laves phase structure for the MA-treated alloy, while crystal structure of the as annealed alloy was the ordered C15 type structure which is conventionally called C15b type and is formally called AuBe 5 type structure. The hydrogen capacity in the alloy might have a strong relation to the atomic arrangement of this alloy.",

keywords = "Crystal structure, Hydrogen storage, Mechanical alloying, Nanostructures, Transmission electron microscopy",

author = "Yasuyuki Kitano and K. Yamada and M. Miyamoto and S. Orimo and H. Fujii and K. Aono and E. Tanabe",

note = "Funding Information: This work is supported by Grant-in-Aid for Scientific Research on Priority Areas(A) {\textquoteleft}New Protium Function in Sub-Nano Lattice Matters{\textquoteright} (Area No. 299) given by the Ministry of Education, Science and Culture, Japan.; Proceedings of the International Symposium on Metal-Hydrogen (MH 2000) ; Conference date: 01-10-2000 Through 06-10-2000",

year = "2002",

month = jan,

day = "17",

doi = "10.1016/S0925-8388(01)01531-6",

language = "English",

volume = "330-332",

pages = "292--295",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Electron microscopy and hydriding properties of MgYNi 4 synthesized by mechanical alloying

AU - Kitano, Yasuyuki

AU - Yamada, K.

AU - Miyamoto, M.

AU - Orimo, S.

AU - Fujii, H.

AU - Aono, K.

AU - Tanabe, E.

N1 - Funding Information: This work is supported by Grant-in-Aid for Scientific Research on Priority Areas(A) ‘New Protium Function in Sub-Nano Lattice Matters’ (Area No. 299) given by the Ministry of Education, Science and Culture, Japan.

PY - 2002/1/17

Y1 - 2002/1/17

N2 - The ternary alloy, MgYNi 4, was synthesized by mechanical alloying (MA). Its microscopic structures and hydriding properties were studied. The annealing of the alloy at 773 K was also studied. The alloy consists of nanocrystals of less than 10 nm in diameter. The capacity of the hydrogen atoms in the alloy increases with the increasing size of the nanocrystals. The crystal structure was found to be the C15 type Laves phase structure for the MA-treated alloy, while crystal structure of the as annealed alloy was the ordered C15 type structure which is conventionally called C15b type and is formally called AuBe 5 type structure. The hydrogen capacity in the alloy might have a strong relation to the atomic arrangement of this alloy.

AB - The ternary alloy, MgYNi 4, was synthesized by mechanical alloying (MA). Its microscopic structures and hydriding properties were studied. The annealing of the alloy at 773 K was also studied. The alloy consists of nanocrystals of less than 10 nm in diameter. The capacity of the hydrogen atoms in the alloy increases with the increasing size of the nanocrystals. The crystal structure was found to be the C15 type Laves phase structure for the MA-treated alloy, while crystal structure of the as annealed alloy was the ordered C15 type structure which is conventionally called C15b type and is formally called AuBe 5 type structure. The hydrogen capacity in the alloy might have a strong relation to the atomic arrangement of this alloy.

KW - Crystal structure

KW - Hydrogen storage

KW - Mechanical alloying

KW - Nanostructures

KW - Transmission electron microscopy

UR - http://www.scopus.com/inward/record.url?scp=0037122645&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037122645&partnerID=8YFLogxK

U2 - 10.1016/S0925-8388(01)01531-6

DO - 10.1016/S0925-8388(01)01531-6

M3 - Conference article

AN - SCOPUS:0037122645

VL - 330-332

SP - 292

EP - 295

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

T2 - Proceedings of the International Symposium on Metal-Hydrogen (MH 2000)

Y2 - 1 October 2000 through 6 October 2000

ER -