Preparation and hydrogen storage properties of Mg-Ni-B BCC alloys

Huaiyu Shao; Kohta Asano; Hirotoshi Enoki; Etsuo Akiba

Preparation and hydrogen storage properties of Mg-Ni-B BCC alloys

Huaiyu Shao, Kohta Asano, Hirotoshi Enoki, Etsuo Akiba

Hydrogen Utilization Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

Mg-Ni-B system alloys were prepared by the mechanical alloying (MA) method. Body centered cubic (BCC) structure alloys are obtained in some of the Mg-Ni-B compositions after the starting mixtures of raw elements were ball milled for 200 h. Mg₅₀Ni₄₅B₅ and Mg₄₈Ni ₄₈B₄ alloys after ball milling are with single BCC structure, which is confirmed by electron diffraction patterns. From the results of X-ray diffraction and transmission electron microscope, the crystallite size of the alloys is calculated into nanometer scale. Mg₅₀Ni ₄₅B₅ and Mg₄₈Ni₄₈B₄ BCC alloys can absorb hydrogen at 373 K with higher rate than Mg₅₀Ni ₅₀ alloy prepared in the same conditions. And these two samples can reach a hydrogen absorption capacity of 1.94 and 1.93 mass%, respectively at 373 K without any activation process.

Original language	English
Title of host publication	Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Pages	1625-1628
Number of pages	4
Edition	PART 2
Publication status	Published - Dec 1 2007
Event	6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of Duration: Nov 5 2007 → Nov 9 2007

Publication series

Name	Materials Science Forum
Number	PART 2
Volume	561-565
ISSN (Print)	0255-5476

Other

Other	6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Country	Korea, Republic of
City	Jeju
Period	11/5/07 → 11/9/07

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Preparation and hydrogen storage properties of Mg-Ni-B BCC alloys. / Shao, Huaiyu; Asano, Kohta; Enoki, Hirotoshi; Akiba, Etsuo.

Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6. PART 2. ed. 2007. p. 1625-1628 (Materials Science Forum; Vol. 561-565, No. PART 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Shao, H, Asano, K, Enoki, H & Akiba, E 2007, Preparation and hydrogen storage properties of Mg-Ni-B BCC alloys. in Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6. PART 2 edn, Materials Science Forum, no. PART 2, vol. 561-565, pp. 1625-1628, 6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6, Jeju, Korea, Republic of, 11/5/07.

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abstract = "Mg-Ni-B system alloys were prepared by the mechanical alloying (MA) method. Body centered cubic (BCC) structure alloys are obtained in some of the Mg-Ni-B compositions after the starting mixtures of raw elements were ball milled for 200 h. Mg50Ni45B5 and Mg48Ni 48B4 alloys after ball milling are with single BCC structure, which is confirmed by electron diffraction patterns. From the results of X-ray diffraction and transmission electron microscope, the crystallite size of the alloys is calculated into nanometer scale. Mg50Ni 45B5 and Mg48Ni48B4 BCC alloys can absorb hydrogen at 373 K with higher rate than Mg50Ni 50 alloy prepared in the same conditions. And these two samples can reach a hydrogen absorption capacity of 1.94 and 1.93 mass%, respectively at 373 K without any activation process.",

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