Effects of milling and crystallization conditions on microstructure of Nd2Fe14B/α-Fe powder

Ying WANG; Er de WANG

doi:10.1016/S1003-6326(07)60062-4

Effects of milling and crystallization conditions on microstructure of Nd₂Fe₁₄B/α-Fe powder

Ying WANG^*
, Er de WANG

^*Corresponding author for this work

Harbin Institute of Technology

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

4 Scopus citations

Abstract

Effects of milling and crystallization conditions on microstructure, such as amorphous phase and nanocrystalline phase, were investigated by X-ray diffractometry(XRD), differential scanning calorimetry(DSC), and transmission electron microscopy (TEM), respectively. The results show that nanocomposite Nd₂Fe₁₄B/α-Fe powder can be prepared by mechanical milling in argon atmosphere and a subsequent vacuum annealing treatment. The grain sizes of both Nd₂Fe₁₄B and α-Fe phase decrease drastically with increasing milling time. After milling for 5 h, the as-milled material consists of α-Fe nanocomposite phases with the grain size of 10 nm, and some amorphous phases, which can be turned into Nd₂Fe₁₄B/α-Fe nanocomposite phases by the subsequent annealing treatment. Milling energy of mechanical milling after 5 h by theoretical calculation is 6 154.25 kJ/g.

Original language	English
Pages (from-to)	138-142
Number of pages	5
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	17
Issue number	1
DOIs	https://doi.org/10.1016/S1003-6326(07)60062-4
State	Published - Jan 2007
Externally published	Yes

Keywords

NdFeB/α-Fe
crystallization treatment
grain size
mechanical milling
milling energy

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10.1016/S1003-6326(07)60062-4

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title = "Effects of milling and crystallization conditions on microstructure of Nd2Fe14B/α-Fe powder",

abstract = "Effects of milling and crystallization conditions on microstructure, such as amorphous phase and nanocrystalline phase, were investigated by X-ray diffractometry(XRD), differential scanning calorimetry(DSC), and transmission electron microscopy (TEM), respectively. The results show that nanocomposite Nd2Fe14B/α-Fe powder can be prepared by mechanical milling in argon atmosphere and a subsequent vacuum annealing treatment. The grain sizes of both Nd2Fe14B and α-Fe phase decrease drastically with increasing milling time. After milling for 5 h, the as-milled material consists of α-Fe nanocomposite phases with the grain size of 10 nm, and some amorphous phases, which can be turned into Nd2Fe14B/α-Fe nanocomposite phases by the subsequent annealing treatment. Milling energy of mechanical milling after 5 h by theoretical calculation is 6 154.25 kJ/g.",

keywords = "NdFeB/α-Fe, crystallization treatment, grain size, mechanical milling, milling energy",

author = "Ying WANG and WANG, \{Er de\}",

year = "2007",

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doi = "10.1016/S1003-6326(07)60062-4",

language = "英语",

volume = "17",

pages = "138--142",

journal = "Transactions of Nonferrous Metals Society of China (English Edition)",

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publisher = "Nonferrous Metals Society of China",

number = "1",

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TY - JOUR

T1 - Effects of milling and crystallization conditions on microstructure of Nd2Fe14B/α-Fe powder

AU - WANG, Ying

AU - WANG, Er de

PY - 2007/1

Y1 - 2007/1

N2 - Effects of milling and crystallization conditions on microstructure, such as amorphous phase and nanocrystalline phase, were investigated by X-ray diffractometry(XRD), differential scanning calorimetry(DSC), and transmission electron microscopy (TEM), respectively. The results show that nanocomposite Nd2Fe14B/α-Fe powder can be prepared by mechanical milling in argon atmosphere and a subsequent vacuum annealing treatment. The grain sizes of both Nd2Fe14B and α-Fe phase decrease drastically with increasing milling time. After milling for 5 h, the as-milled material consists of α-Fe nanocomposite phases with the grain size of 10 nm, and some amorphous phases, which can be turned into Nd2Fe14B/α-Fe nanocomposite phases by the subsequent annealing treatment. Milling energy of mechanical milling after 5 h by theoretical calculation is 6 154.25 kJ/g.

AB - Effects of milling and crystallization conditions on microstructure, such as amorphous phase and nanocrystalline phase, were investigated by X-ray diffractometry(XRD), differential scanning calorimetry(DSC), and transmission electron microscopy (TEM), respectively. The results show that nanocomposite Nd2Fe14B/α-Fe powder can be prepared by mechanical milling in argon atmosphere and a subsequent vacuum annealing treatment. The grain sizes of both Nd2Fe14B and α-Fe phase decrease drastically with increasing milling time. After milling for 5 h, the as-milled material consists of α-Fe nanocomposite phases with the grain size of 10 nm, and some amorphous phases, which can be turned into Nd2Fe14B/α-Fe nanocomposite phases by the subsequent annealing treatment. Milling energy of mechanical milling after 5 h by theoretical calculation is 6 154.25 kJ/g.

KW - NdFeB/α-Fe

KW - crystallization treatment

KW - grain size

KW - mechanical milling

KW - milling energy

UR - https://www.scopus.com/pages/publications/34347366252

U2 - 10.1016/S1003-6326(07)60062-4

DO - 10.1016/S1003-6326(07)60062-4

M3 - 文章

AN - SCOPUS:34347366252

SN - 1003-6326

VL - 17

SP - 138

EP - 142

JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

IS - 1

ER -

Effects of milling and crystallization conditions on microstructure of Nd₂Fe₁₄B/α-Fe powder

Abstract

Keywords

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