Effects of additional elements on hydrogen absorption and desorption characteristics of Sm2Fe17 compounds

Hajime Nakamura; Satoshi Sugimoto; Terumi Tanaka; Masuo Okada; Motofumi Homma

doi:10.1016/0925-8388(94)04904-1

Effects of additional elements on hydrogen absorption and desorption characteristics of Sm₂Fe₁₇ compounds

Hajime Nakamura, Satoshi Sugimoto, Terumi Tanaka, Masuo Okada, Motofumi Homma

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Effects of additional elements on hydrogen absorption and desorption characteristics of Sm₂Fe₁₇ compounds have been studied. On heating the Sm₂Fe₁₇ compound under an atmospheric pressure of hydrogen, the Sm₂Fe₁₇ compound disproportionates into a mixture of SmH₂ and α-Fe at around 550 °C; this mixture recombines to form the original compound above 1000 °C. Zr or Nb addition makes the disproportionation reaction sluggish. Co or Ga addition decreases the temperature of the recombination reaction under an atmospheric pressure of hydrogen. It can be said that Co or Ga addition is effective for enhancing the recombination reaction in hydrogenation, disproportionation, desorption and recombination phenomena.

Original language	English
Pages (from-to)	13-17
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	222
Issue number	1-2
DOIs	https://doi.org/10.1016/0925-8388(94)04904-1
Publication status	Published - 1995 May 1

Keywords

Additional elements
Disproportionation
HDDR phenomena
Recombination
SmFeN

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/0925-8388(94)04904-1

Cite this

@article{1eab8304803748ee8d899c59504ce7b9,

title = "Effects of additional elements on hydrogen absorption and desorption characteristics of Sm2Fe17 compounds",

abstract = "Effects of additional elements on hydrogen absorption and desorption characteristics of Sm2Fe17 compounds have been studied. On heating the Sm2Fe17 compound under an atmospheric pressure of hydrogen, the Sm2Fe17 compound disproportionates into a mixture of SmH2 and α-Fe at around 550 °C; this mixture recombines to form the original compound above 1000 °C. Zr or Nb addition makes the disproportionation reaction sluggish. Co or Ga addition decreases the temperature of the recombination reaction under an atmospheric pressure of hydrogen. It can be said that Co or Ga addition is effective for enhancing the recombination reaction in hydrogenation, disproportionation, desorption and recombination phenomena.",

keywords = "Additional elements, Disproportionation, HDDR phenomena, Recombination, SmFeN",

author = "Hajime Nakamura and Satoshi Sugimoto and Terumi Tanaka and Masuo Okada and Motofumi Homma",

year = "1995",

month = may,

day = "1",

doi = "10.1016/0925-8388(94)04904-1",

language = "English",

volume = "222",

pages = "13--17",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "1-2",

}

TY - JOUR

T1 - Effects of additional elements on hydrogen absorption and desorption characteristics of Sm2Fe17 compounds

AU - Nakamura, Hajime

AU - Sugimoto, Satoshi

AU - Tanaka, Terumi

AU - Okada, Masuo

AU - Homma, Motofumi

PY - 1995/5/1

Y1 - 1995/5/1

N2 - Effects of additional elements on hydrogen absorption and desorption characteristics of Sm2Fe17 compounds have been studied. On heating the Sm2Fe17 compound under an atmospheric pressure of hydrogen, the Sm2Fe17 compound disproportionates into a mixture of SmH2 and α-Fe at around 550 °C; this mixture recombines to form the original compound above 1000 °C. Zr or Nb addition makes the disproportionation reaction sluggish. Co or Ga addition decreases the temperature of the recombination reaction under an atmospheric pressure of hydrogen. It can be said that Co or Ga addition is effective for enhancing the recombination reaction in hydrogenation, disproportionation, desorption and recombination phenomena.

AB - Effects of additional elements on hydrogen absorption and desorption characteristics of Sm2Fe17 compounds have been studied. On heating the Sm2Fe17 compound under an atmospheric pressure of hydrogen, the Sm2Fe17 compound disproportionates into a mixture of SmH2 and α-Fe at around 550 °C; this mixture recombines to form the original compound above 1000 °C. Zr or Nb addition makes the disproportionation reaction sluggish. Co or Ga addition decreases the temperature of the recombination reaction under an atmospheric pressure of hydrogen. It can be said that Co or Ga addition is effective for enhancing the recombination reaction in hydrogenation, disproportionation, desorption and recombination phenomena.

KW - Additional elements

KW - Disproportionation

KW - HDDR phenomena

KW - Recombination

KW - SmFeN

UR - http://www.scopus.com/inward/record.url?scp=0029308105&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029308105&partnerID=8YFLogxK

U2 - 10.1016/0925-8388(94)04904-1

DO - 10.1016/0925-8388(94)04904-1

M3 - Article

AN - SCOPUS:0029308105

VL - 222

SP - 13

EP - 17

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 1-2

ER -