Development of Dy-free sintered NdFeB magnet through grain boundary engineering by diffusion of PrCu alloys

Thumbnail Image
Date
2023
Authors
Tang, Wei
Wang, Jing
Dasari, Harika
Kramer, Matthew J.
Cui, Jun
Anderson, Iver
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Authors
Person
Ouyang, Gaoyuan
Ames Laboratory Scientist II
Research Projects
Organizational Units
Organizational Unit
Ames National Laboratory

Ames National Laboratory is a government-owned, contractor-operated national laboratory of the U.S. Department of Energy (DOE), operated by and located on the campus of Iowa State University in Ames, Iowa.

For more than 70 years, the Ames National Laboratory has successfully partnered with Iowa State University, and is unique among the 17 DOE laboratories in that it is physically located on the campus of a major research university. Many of the scientists and administrators at the Laboratory also hold faculty positions at the University and the Laboratory has access to both undergraduate and graduate student talent.

Organizational Unit
Materials Science and Engineering

The Department of Materials Science and Engineering teaches the composition, microstructure, and processing of materials as well as their properties, uses, and performance. These fields of research utilize technologies in metals, ceramics, polymers, composites, and electronic materials.

History
The Department of Materials Science and Engineering was formed in 1975 from the merger of the Department of Ceramics Engineering and the Department of Metallurgical Engineering.

Dates of Existence
1975-present

Related Units

Journal Issue
Is Version Of
Versions
Series
Abstract
Dy-free sintered magnets were fabricated by blending Neo powder with different amount of PrCu powder. With increasing PrCu from 0-10 wt.%, Hcj of the magnets gradually increases from the original 14.5 kOe to 18.6 kOe. The highest (BH)max achieved was 35.0 MGOe with 7.5 wt.% PrCu. It was found that PrCu was mainly distributed at grain boundary and triple junctions, leading to a reduced coupling among grains, thus an enhanced Hcj. The grain boundary engineering by the diffusion of PrCu alloy is an effective method to improve Hcj of Dy-free magnets.
Comments
This is a manuscript of a conference proceeding published as Tang, Wei, Gaoyuan Ouyang, Jing Wang, Harika Dasari, Matthew J. Kramer, Jun Cui, and Iver E. Anderson. "Development of Dy-free sintered NdFeB magnet through grain boundary engineering by diffusion of PrCu alloys." Intermag 2023. Sendai, Japan, May 15-19, 2023. Copyright 2023 IEEE. Posted with permission.
Description
Keywords
Citation
DOI
Subject Categories
Copyright