High Purity α"-Fe16N2 Particles with Tunable Sphere Structures via Spray Drying Method

被引：2

作者：

Kim, Su Gyeong ^{[1
]}

Jeon, Kwang-Won ^{[1
]}

Lee, Jung-Goo ^{[1
]}

Kong, Hyeongjun ^{[2
]}

Jeen, Hyoungjeen ^{[2
]}

Kwon, Se-Hun ^{[3
]}

Baek, Youn-Kyoung ^{[1
]}

机构：

[1] Korea Inst Mat Sci, Powder & Ceram Div, Chang Won 51508, South Korea

[2] Pusan Natl Univ, Dept Phys, Busan 46241, South Korea

[3] Pusan Natl Univ, Sch Mat Sci & Engn, Busan 46241, South Korea

来源：

JOURNAL OF MAGNETICS | 2017年 / 22卷 / 04期

关键词：

iron nitride; rare-earth free; permanent magnet; spray drying; hollow sphere; solid sphere; THERMAL-STABILITY; MAGNETIC-MOMENT; ALPHA''-FE16N2; NANOPARTICLES; MORPHOLOGY; FE16N2;

D O I：

10.4283/JMAG.2017.22.4.590

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A facile and scalable method to synthesize high purity alpha"-Fe16N2 powders with tunable sphere structures is developed. This strategy combined spray drying of Fe salt particles with hydrogen reduction and subsequent ammonia nitridation to form alpha"-Fe16N2 phase. The solid and hollow sphere structures of precursor particles can be easily tuned by adding ethanol as a directing agent. In addition, the initial structure of Fe spheres is maintained even after phase transformation process. The resulting particles prepared by optimum condition consist of high purity alpha"-Fe16N2 with a phase fraction of 95.52 wt%, showing a coercivity of up to 1471 Oe and a magnetic energy product of up to 2.25 MGOe at room temperature.

引用

页码：590 / 595

页数：6

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