Hydrogen absorption of NdDyFeCoNbCuB sintered magnets

Jianjun LUO; P. De Rango; D. Fruchart; Jinna MEI; Rui HU; Jinshan LI; Lian ZHOU

doi:10.1016/S1002-0721(08)60281-1

Hydrogen absorption of NdDyFeCoNbCuB sintered magnets

Jianjun LUO
, P. De Rango
, D. Fruchart
, Jinna MEI
, Rui HU
, Jinshan LI
, Lian ZHOU

School of Materials Sience and Engineering

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

2 Scopus citations

Abstract

Hydrogen absorption and desorption characteristics for high coercivity NdDyFeCoNbCuB sintered bulk magnets were studied, by differential scanning calorimetry (DSC) measurement and hydrogenation kinetics measurement. The DSC measurements showed that hydrogenation of Nd-rich phase occurred in the temperature range of 40-185 °C, hydrogenation of the tetragonal (Φ) phase in the temperature range of 185-220 °C, as well as the disproportionation of the Φ phase that occurred in a broad temperature range from around 500 to 800 °C. The hydrogenation kinetics measurements indicated that hydrogen absorption of the bulk magnets at 50 °C absorbed more hydrogen than at 150 °C, although this procedure was slower at 50 °C than at 150 °C. This phenomenon was discussed by means of pressure-concentration-temperature (p-c-T) diagrams.

Original language	English
Pages (from-to)	520-524
Number of pages	5
Journal	Journal of Rare Earths
Volume	27
Issue number	3
DOIs	https://doi.org/10.1016/S1002-0721(08)60281-1
State	Published - Jun 2009

Keywords

hydrogen absorption
hydrogen desorption
rare earths
sintered NdDyFeCoNbCuB magnets

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10.1016/S1002-0721(08)60281-1

Cite this

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title = "Hydrogen absorption of NdDyFeCoNbCuB sintered magnets",

abstract = "Hydrogen absorption and desorption characteristics for high coercivity NdDyFeCoNbCuB sintered bulk magnets were studied, by differential scanning calorimetry (DSC) measurement and hydrogenation kinetics measurement. The DSC measurements showed that hydrogenation of Nd-rich phase occurred in the temperature range of 40-185 °C, hydrogenation of the tetragonal (Φ) phase in the temperature range of 185-220 °C, as well as the disproportionation of the Φ phase that occurred in a broad temperature range from around 500 to 800 °C. The hydrogenation kinetics measurements indicated that hydrogen absorption of the bulk magnets at 50 °C absorbed more hydrogen than at 150 °C, although this procedure was slower at 50 °C than at 150 °C. This phenomenon was discussed by means of pressure-concentration-temperature (p-c-T) diagrams.",

keywords = "hydrogen absorption, hydrogen desorption, rare earths, sintered NdDyFeCoNbCuB magnets",

author = "Jianjun LUO and \{De Rango\}, P. and D. Fruchart and Jinna MEI and Rui HU and Jinshan LI and Lian ZHOU",

year = "2009",

month = jun,

doi = "10.1016/S1002-0721(08)60281-1",

language = "英语",

volume = "27",

pages = "520--524",

journal = "Journal of Rare Earths",

issn = "1002-0721",

publisher = "Editorial Office of Chinese Rare Earths",

number = "3",

}

TY - JOUR

T1 - Hydrogen absorption of NdDyFeCoNbCuB sintered magnets

AU - LUO, Jianjun

AU - De Rango, P.

AU - Fruchart, D.

AU - MEI, Jinna

AU - HU, Rui

AU - LI, Jinshan

AU - ZHOU, Lian

PY - 2009/6

Y1 - 2009/6

N2 - Hydrogen absorption and desorption characteristics for high coercivity NdDyFeCoNbCuB sintered bulk magnets were studied, by differential scanning calorimetry (DSC) measurement and hydrogenation kinetics measurement. The DSC measurements showed that hydrogenation of Nd-rich phase occurred in the temperature range of 40-185 °C, hydrogenation of the tetragonal (Φ) phase in the temperature range of 185-220 °C, as well as the disproportionation of the Φ phase that occurred in a broad temperature range from around 500 to 800 °C. The hydrogenation kinetics measurements indicated that hydrogen absorption of the bulk magnets at 50 °C absorbed more hydrogen than at 150 °C, although this procedure was slower at 50 °C than at 150 °C. This phenomenon was discussed by means of pressure-concentration-temperature (p-c-T) diagrams.

AB - Hydrogen absorption and desorption characteristics for high coercivity NdDyFeCoNbCuB sintered bulk magnets were studied, by differential scanning calorimetry (DSC) measurement and hydrogenation kinetics measurement. The DSC measurements showed that hydrogenation of Nd-rich phase occurred in the temperature range of 40-185 °C, hydrogenation of the tetragonal (Φ) phase in the temperature range of 185-220 °C, as well as the disproportionation of the Φ phase that occurred in a broad temperature range from around 500 to 800 °C. The hydrogenation kinetics measurements indicated that hydrogen absorption of the bulk magnets at 50 °C absorbed more hydrogen than at 150 °C, although this procedure was slower at 50 °C than at 150 °C. This phenomenon was discussed by means of pressure-concentration-temperature (p-c-T) diagrams.

KW - hydrogen absorption

KW - hydrogen desorption

KW - rare earths

KW - sintered NdDyFeCoNbCuB magnets

UR - https://www.scopus.com/pages/publications/67649566094

U2 - 10.1016/S1002-0721(08)60281-1

DO - 10.1016/S1002-0721(08)60281-1

M3 - 文章

AN - SCOPUS:67649566094

SN - 1002-0721

VL - 27

SP - 520

EP - 524

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 3

ER -

Hydrogen absorption of NdDyFeCoNbCuB sintered magnets

Abstract

Keywords

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