High temperature oxidation of rare earth permanent magnets. Part 1 - Microstructure evolution and general mechanism

Firdaus Muhamad; Rhamdhani M. Akbar; Rankin W. John; Pownceby Mark; Webster Nathan A. S.; DAngelo Anita M.; McGregor Kathie

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High temperature oxidation of rare earth permanent magnets. Part 1 - Microstructure evolution and general mechanism

机译：稀土永磁体的高温氧化。第1部分-微观组织演变和一般机理

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The microstructure evolution and mechanism of oxidation of (Nd,Pr)FeB magnet in the range 700-1500 K have been investigated. Bulk (10 x 5 x 5 mm) and powder samples (-150 mu m) were oxidized under isothermal and non-isothermal conditions. DSC, XRD, high-temperature XRD, SEM and EPMA characterization techniques were utilized to investigate the general oxidation reactions, microstructure evolutions and phase transformations. Three different microstructure evolutions were observed in the temperature ranges 700-1000 K, 1000-1300 K and 1300-1500 K. The different product microstructures formed during the oxidation have implications for devising strategies for the recycling/recovery process of (Nd,Pr)FeB magnets.

机译：研究了（Nd，Pr）FeB磁体在700-1500 K范围内的组织演变和氧化机理。在等温和非等温条件下将大块（10 x 5 x 5毫米）和粉末样品（-150微米）氧化。利用DSC，XRD，高温XRD，SEM和EPMA表征技术研究了一般的氧化反应，微观结构演变和相变。在700-1000 K，1000-1300 K和1300-1500 K的温度范围内观察到三种不同的微观结构演变。在氧化过程中形成的不同产物微观结构对（Nd，Pr）的回收/回收过程设计策略有影响。 FeB磁铁。

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来源
《Corrosion science》 |2018年第4期|374-385|共12页
作者
Firdaus Muhamad; Rhamdhani M. Akbar; Rankin W. John; Pownceby Mark; Webster Nathan A. S.; DAngelo Anita M.; McGregor Kathie;
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作者单位

Swinburne Univ Technol, Dept Mech & Prod Design Engn, Melbourne, Vic 3122, Australia;

Swinburne Univ Technol, Dept Mech & Prod Design Engn, Melbourne, Vic 3122, Australia;

Swinburne Univ Technol, Dept Mech & Prod Design Engn, Melbourne, Vic 3122, Australia;

Swinburne Univ Technol, Dept Mech & Prod Design Engn, Melbourne, Vic 3122, Australia;

CSIRO Mineral Resources, Clayton, Vic 3169, Australia;

CSIRO Mineral Resources, Clayton, Vic 3169, Australia;

CSIRO Mineral Resources, Clayton, Vic 3169, Australia;

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正文语种 eng
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关键词
Rare earth elements; EPMA; SEM; XRD; Internal oxidation; Oxidation;

机译：稀土元素;EPMA;SEM;XRD;内部氧化;氧化;

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1. Mechanism and microstructure evolution of high temperature oxidation of end-of-life NdFeB rare earth permanent magnets [J] . Nababan Deddy C., Mukhlis Reiza, Durandet Yvonne, Corrosion science . 2021,第Apra期

机译：高温氧化终生NdFeB稀土永磁体的机理和微观结构演化
2. High temperature oxidation of rare earth permanent magnets. Part 2-Kinetics [J] . Firdaus Muhamad, Rhamdhani M. Akbar, Durandet Yvonne, Corrosion science . 2018,第APRa期

机译：稀土永磁体的高温氧化。第2部分
3. Stability of rare earth oxides in a moist environment at elevated temperatures—Experimental and thermodynamic studies Part II: Comparison of the rare earth oxides [J] . Emilie Courcot, Francis Rebillat, Francis Teyssandier Journal of the European Ceramic Society . 2010,第9期

机译：高温潮湿环境中稀土氧化物的稳定性-实验和热力学研究第二部分：稀土氧化物的比较
4. Solution Growth of New Rare-earth Poor Ce/Co/Mg Permanent Magnets. [C] . Tej N. Lamichhane, Valentin Taufour, Andriy Palasyuk Rare Earth Research Conference . 2019

机译：溶液生长新的稀土贫卵CE / CO / MG永磁体。
5. THE MATERIALS SUBSTITUTION IN RARE EARTH PERMANENT MAGNETS. [D] . CHENG, SHU-FAN. 1984

机译：稀土永磁体中的材料替代。
6. The Effect of ECAP Temperature on the Microstructure and Properties of a Rolled Rare Earth Magnesium Alloy [O] . Yun Tan, Wei Li, Weiwei Hu, 2019

机译：ECAP温度对轧制稀土镁合金组织和性能的影响
7. Improvements in the Coercivity of Iron-Based Nanocrystalline Low-Rare-Earth Fe3B-Nd Permanent Magnets. [O] . H. Kanekiyo, S. Hirosawa 1993

机译：铁基纳米晶体低稀土Fe3B-Nd永磁体的矫顽力的改进。
8. Anisotropy and Microstructure of High-Coercivity Rare Earth Permanent Magnets. [R] . Fidler, J., Grossinger, R., Kirchmayr, H., 1989

机译：高矫顽力稀土永磁体的各向异性及微观结构。

High temperature oxidation of rare earth permanent magnets. Part 1 - Microstructure evolution and general mechanism

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