Preparation and properties of polycrystalline and nanocrystalline Sm3Co alloys

被引：1

作者：

Liu Xue-Mei ^{[1
,2
]}

Liu Guo-Quan ^{[1
]}

Li Ding-Peng ^{[2
]}

Wang Hai-Bin ^{[2
]}

Song Xiao-Yan ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

来源：

ACTA PHYSICA SINICA | 2014年 / 63卷 / 09期

关键词：

Sm3Co; nanocrystalline alloy; magnetic properties; mechanical properties;

D O I：

10.7498/aps.63.098102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, a novel fabrication process of the nanocrystalline Sm3Co alloys and their fundamental properties were studied. The polycrystalline Sm3Co bulk material was prepared by the vacuum melting method. By using the polycrystalline Sm3Co bulk metal, the nanocrystalline Sm3Co alloys with an average grain size of about 8 nm was prepared by combined ball milling and spark plasma sintering. The crystal structure model was constructed and the magnetic and mechanical properties of the polycrystalline and nanocrystalline Sm3Co alloys were characterized and compared with each other in detail. Results show that the nanocrystalline alloys exhibit magnetic properties and high mechanical properties. Microhardness and elastic modulus of the nanocrystalline Sm3Co alloys are 4.87 GPa and 63.7 GPa, respectively, which are increased by 8.7% and 13.3% as compared with the polycrystalline alloys.

引用

页数：5