Influence of post-aging on the microstructure and properties of Sm 2(Co,Fe,Cu,Zr) 17 magnets

Qingjun Zheng; Sike Xia; Alan Dozier; Tongguang Zhai; Michael P. Effgen; Jeff Whilhite

Influence of post-aging on the microstructure and properties of Sm ₂(Co,Fe,Cu,Zr) ₁₇ magnets

Qingjun Zheng
, Sike Xia
, Alan Dozier
, Tongguang Zhai
, Michael P. Effgen
, Jeff Whilhite

Chemical and Materials Engineering

Producción científica: Paper › revisión exhaustiva

Resumen

Effects of the post-aging condition on the microstructure and magnetic performance of Sm ₂(Co, Fe, Cu, Zr) ₁₇ magnets were investigated. The second quadrant M-H hysteresis curve was measured. The microstructure was characterized using OM, XRD, and TEM. It was found that, as the aging temperature increased in the range of 850°C - 900°C, the remanence of the Sm ₂(Co, Fe, Cu, Zr) ₁₇ magnets increased while the coercivity decreased. Both the remanence and coercivity of the Sm ₂(Co, Fe, Cu, Zr) ₁₇ magnets were improved by a two-step aging, aging at 900°C, followed by the aging at lower- temperature, e.g, 850°C. Microstructure analysis indicated that the improvement in the magnetic properties may result from change of the pyramidal cell structure and microchemistry with the aging conditions.

Idioma original	English
Páginas	203-210
Número de páginas	8
Estado	Published - 2005
Evento	Materials Science and Technology 2005, MS and T'05 - Pittsburgh, PA, United States Duración: sept 25 2005 → sept 28 2005

Conference

Conference	Materials Science and Technology 2005, MS and T'05
País/Territorio	United States
Ciudad	Pittsburgh, PA
Período	9/25/05 → 9/28/05

ASJC Scopus subject areas

General Engineering

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title = "Influence of post-aging on the microstructure and properties of Sm 2(Co,Fe,Cu,Zr) 17 magnets",

abstract = "Effects of the post-aging condition on the microstructure and magnetic performance of Sm 2(Co, Fe, Cu, Zr) 17 magnets were investigated. The second quadrant M-H hysteresis curve was measured. The microstructure was characterized using OM, XRD, and TEM. It was found that, as the aging temperature increased in the range of 850°C - 900°C, the remanence of the Sm 2(Co, Fe, Cu, Zr) 17 magnets increased while the coercivity decreased. Both the remanence and coercivity of the Sm 2(Co, Fe, Cu, Zr) 17 magnets were improved by a two-step aging, aging at 900°C, followed by the aging at lower- temperature, e.g, 850°C. Microstructure analysis indicated that the improvement in the magnetic properties may result from change of the pyramidal cell structure and microchemistry with the aging conditions.",

keywords = "Cellular structure, Coercivity, Post-aging, Sm (Co, Fe, Cu, Zr) magnets",

author = "Qingjun Zheng and Sike Xia and Alan Dozier and Tongguang Zhai and Effgen, \{Michael P.\} and Jeff Whilhite",

year = "2005",

language = "English",

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TY - CONF

T1 - Influence of post-aging on the microstructure and properties of Sm 2(Co,Fe,Cu,Zr) 17 magnets

AU - Zheng, Qingjun

AU - Xia, Sike

AU - Dozier, Alan

AU - Zhai, Tongguang

AU - Effgen, Michael P.

AU - Whilhite, Jeff

PY - 2005

Y1 - 2005

N2 - Effects of the post-aging condition on the microstructure and magnetic performance of Sm 2(Co, Fe, Cu, Zr) 17 magnets were investigated. The second quadrant M-H hysteresis curve was measured. The microstructure was characterized using OM, XRD, and TEM. It was found that, as the aging temperature increased in the range of 850°C - 900°C, the remanence of the Sm 2(Co, Fe, Cu, Zr) 17 magnets increased while the coercivity decreased. Both the remanence and coercivity of the Sm 2(Co, Fe, Cu, Zr) 17 magnets were improved by a two-step aging, aging at 900°C, followed by the aging at lower- temperature, e.g, 850°C. Microstructure analysis indicated that the improvement in the magnetic properties may result from change of the pyramidal cell structure and microchemistry with the aging conditions.

AB - Effects of the post-aging condition on the microstructure and magnetic performance of Sm 2(Co, Fe, Cu, Zr) 17 magnets were investigated. The second quadrant M-H hysteresis curve was measured. The microstructure was characterized using OM, XRD, and TEM. It was found that, as the aging temperature increased in the range of 850°C - 900°C, the remanence of the Sm 2(Co, Fe, Cu, Zr) 17 magnets increased while the coercivity decreased. Both the remanence and coercivity of the Sm 2(Co, Fe, Cu, Zr) 17 magnets were improved by a two-step aging, aging at 900°C, followed by the aging at lower- temperature, e.g, 850°C. Microstructure analysis indicated that the improvement in the magnetic properties may result from change of the pyramidal cell structure and microchemistry with the aging conditions.

KW - Cellular structure

KW - Coercivity

KW - Post-aging

KW - Sm (Co, Fe, Cu, Zr) magnets

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M3 - Paper

AN - SCOPUS:33645032846

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T2 - Materials Science and Technology 2005, MS and T'05

Y2 - 25 September 2005 through 28 September 2005

ER -