Synthesis of quasicrystal phases by mechanical alloying of Ti45+xZr 38-xNi 17 (-4≤ x ≤16) powder mixtures, and their hydrogen storage properties

Akito Takasaki, Naoki Imai, Kenneth F. Kelton

研究成果: Conference contribution

6 引用 (Scopus)

抄録

Mechanical alloying of Ti 45+xZr 38-xNi 17 (-4 ≤ x ≤ 16) elemental powder mixtures leads to the formation the amorphous phase, but subsequent annealing at 833 K causes the formation of icosahedral (i) quasicrystal and the Ti 2Ni-type crystal phases. The α-Ti phase is also produced in Ti-rich powders after annealing. Both the quasilattice constant of the i-phase and the lattice parameter of the Ti 2Ni-type crystal phase decrease monotonically with increasing substituted amount of Ti because of the smaller radius of the Ti atom. The maximum hydrogen concentration in the i-phase in all powder compacts, after electrochemical hydrogenation in a KOH solution, is almost the same, about 63 at% ([H] / [M] ≈ 1.7). The onset temperature of hydrogen desorption is about 570 K (at a heating rate of 5 K/min) for all powders, but the temperature for the maximum hydrogen desorption rate increases with increasing Ti concentration in the powders, suggesting that some hydrogen atoms might be more strongly bound in the quasilattice where the original Zr sites become occupied by Ti atoms.

元の言語English
ホスト出版物のタイトルMaterials Research Society Symposium - Proceedings
編集者E. Belin-Ferre, M. Feuerbacher, Y. Ishii, D.J. Sordelet
ページ351-356
ページ数6
805
出版物ステータスPublished - 2003
イベントQuasicrystals 2003 - Preparation, Properties and Applications - Boston, MA., United States
継続期間: 2003 12 12003 12 3

Other

OtherQuasicrystals 2003 - Preparation, Properties and Applications
United States
Boston, MA.
期間03/12/103/12/3

Fingerprint

Quasicrystals
Mechanical alloying
Hydrogen storage
Powders
Hydrogen
Atoms
Desorption
Annealing
Crystals
Heating rate
Hydrogenation
Lattice constants
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

これを引用

Takasaki, A., Imai, N., & Kelton, K. F. (2003). Synthesis of quasicrystal phases by mechanical alloying of Ti45+xZr 38-xNi 17 (-4≤ x ≤16) powder mixtures, and their hydrogen storage properties : E. Belin-Ferre, M. Feuerbacher, Y. Ishii, & D. J. Sordelet (版), Materials Research Society Symposium - Proceedings (巻 805, pp. 351-356)

Synthesis of quasicrystal phases by mechanical alloying of Ti45+xZr 38-xNi 17 (-4≤ x ≤16) powder mixtures, and their hydrogen storage properties . / Takasaki, Akito; Imai, Naoki; Kelton, Kenneth F.

Materials Research Society Symposium - Proceedings. 版 / E. Belin-Ferre; M. Feuerbacher; Y. Ishii; D.J. Sordelet. 巻 805 2003. p. 351-356.

研究成果: Conference contribution

Takasaki, A, Imai, N & Kelton, KF 2003, Synthesis of quasicrystal phases by mechanical alloying of Ti45+xZr 38-xNi 17 (-4≤ x ≤16) powder mixtures, and their hydrogen storage properties : E Belin-Ferre, M Feuerbacher, Y Ishii & DJ Sordelet (版), Materials Research Society Symposium - Proceedings. 巻. 805, pp. 351-356, Quasicrystals 2003 - Preparation, Properties and Applications, Boston, MA., United States, 03/12/1.
Takasaki A, Imai N, Kelton KF. Synthesis of quasicrystal phases by mechanical alloying of Ti45+xZr 38-xNi 17 (-4≤ x ≤16) powder mixtures, and their hydrogen storage properties : Belin-Ferre E, Feuerbacher M, Ishii Y, Sordelet DJ, 編集者, Materials Research Society Symposium - Proceedings. 巻 805. 2003. p. 351-356
Takasaki, Akito ; Imai, Naoki ; Kelton, Kenneth F. / Synthesis of quasicrystal phases by mechanical alloying of Ti45+xZr 38-xNi 17 (-4≤ x ≤16) powder mixtures, and their hydrogen storage properties Materials Research Society Symposium - Proceedings. 編集者 / E. Belin-Ferre ; M. Feuerbacher ; Y. Ishii ; D.J. Sordelet. 巻 805 2003. pp. 351-356
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abstract = "Mechanical alloying of Ti 45+xZr 38-xNi 17 (-4 ≤ x ≤ 16) elemental powder mixtures leads to the formation the amorphous phase, but subsequent annealing at 833 K causes the formation of icosahedral (i) quasicrystal and the Ti 2Ni-type crystal phases. The α-Ti phase is also produced in Ti-rich powders after annealing. Both the quasilattice constant of the i-phase and the lattice parameter of the Ti 2Ni-type crystal phase decrease monotonically with increasing substituted amount of Ti because of the smaller radius of the Ti atom. The maximum hydrogen concentration in the i-phase in all powder compacts, after electrochemical hydrogenation in a KOH solution, is almost the same, about 63 at{\%} ([H] / [M] ≈ 1.7). The onset temperature of hydrogen desorption is about 570 K (at a heating rate of 5 K/min) for all powders, but the temperature for the maximum hydrogen desorption rate increases with increasing Ti concentration in the powders, suggesting that some hydrogen atoms might be more strongly bound in the quasilattice where the original Zr sites become occupied by Ti atoms.",
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N2 - Mechanical alloying of Ti 45+xZr 38-xNi 17 (-4 ≤ x ≤ 16) elemental powder mixtures leads to the formation the amorphous phase, but subsequent annealing at 833 K causes the formation of icosahedral (i) quasicrystal and the Ti 2Ni-type crystal phases. The α-Ti phase is also produced in Ti-rich powders after annealing. Both the quasilattice constant of the i-phase and the lattice parameter of the Ti 2Ni-type crystal phase decrease monotonically with increasing substituted amount of Ti because of the smaller radius of the Ti atom. The maximum hydrogen concentration in the i-phase in all powder compacts, after electrochemical hydrogenation in a KOH solution, is almost the same, about 63 at% ([H] / [M] ≈ 1.7). The onset temperature of hydrogen desorption is about 570 K (at a heating rate of 5 K/min) for all powders, but the temperature for the maximum hydrogen desorption rate increases with increasing Ti concentration in the powders, suggesting that some hydrogen atoms might be more strongly bound in the quasilattice where the original Zr sites become occupied by Ti atoms.

AB - Mechanical alloying of Ti 45+xZr 38-xNi 17 (-4 ≤ x ≤ 16) elemental powder mixtures leads to the formation the amorphous phase, but subsequent annealing at 833 K causes the formation of icosahedral (i) quasicrystal and the Ti 2Ni-type crystal phases. The α-Ti phase is also produced in Ti-rich powders after annealing. Both the quasilattice constant of the i-phase and the lattice parameter of the Ti 2Ni-type crystal phase decrease monotonically with increasing substituted amount of Ti because of the smaller radius of the Ti atom. The maximum hydrogen concentration in the i-phase in all powder compacts, after electrochemical hydrogenation in a KOH solution, is almost the same, about 63 at% ([H] / [M] ≈ 1.7). The onset temperature of hydrogen desorption is about 570 K (at a heating rate of 5 K/min) for all powders, but the temperature for the maximum hydrogen desorption rate increases with increasing Ti concentration in the powders, suggesting that some hydrogen atoms might be more strongly bound in the quasilattice where the original Zr sites become occupied by Ti atoms.

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