粗晶和纳米晶Sm3Co合金的制备及其性能研究

刘雪梅; 刘国权; 李定朋; 王海滨; 宋晓艳

doi:10.7498/aps.63.098102

摘要

本文针对Sm3Co粗晶和纳米晶合金材料的制备和基础性能进行了研究. 采用磁悬浮熔炼技术多次精炼制备出Sm3Co粗晶合金. 以此为母材，利用高能球磨非晶化和放电等离子烧结致密化并同步晶化的技术路线，制备出平均晶粒尺寸为8 nm的超细纳米晶Sm3Co合金块体材料. 构建了Sm3Co纳米晶合金的晶体结构模型，并结合其显微组织的表征，分析了Sm3Co纳米晶合金的磁性能和力学性能，并与粗晶合金进行了比较. 粗晶Sm3Co合金不具有硬磁特性，而同种成分的纳米晶合金则表现出一定的硬磁特性. 纳米晶Sm3Co合金的显微硬度和弹性模量分别达到4.87 GPa和63.7 GPa，比粗晶合金增大约8.7%和13.3%. 本文研究结果为Sm-Co体系合金的基础性能及其纳米尺度效应提供了系统的参考依据.

关键词:

Abstract

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.

Keywords:

作者及机构信息

1.
北京科技大学新金属材料国家重点实验室, 北京 100083;

2.
北京工业大学材料科学与工程学院, 北京 100124

基金项目: 新金属材料国家重点实验室开放基金（批准号：2012-Z08）和北京市自然科学基金（批准号：2133062，2112006）资助的课题.

Authors and contacts

1.
State Key Lab of Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

2.
College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

Funds: Project supported by the State Key Lab of Advanced Metals and Materials, University of Science and Technology Beijing, China (Grant No. 2012-Z08), and the Natural Science Foundation of Beijing, China (Grant Nos. 2133062, 2112006).

参考文献

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[17]	Buschow K H J, Goot A S V 1969 J. Less-Common Met. 18 309
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施引文献

[1]	Masrour R, Bahmad L, Benyoussef A 2013 Chin. Phys. B 22 057504
[2]	Wang Y T, Liu Z D, Yi J, Xue Z Y 2012 Acta Phys. Sin. 61 056102 (in Chinese)[王永田, 刘宗德, 易军, 薛志勇 2012 61 056102]
[3]	Gutfleisch O, Mller K-H, Khlopkov K, Wolf M, Yan A, Schäfer R, Gemming T, Schultz L 2006 Acta Mater. 54 997
[4]	Yi J H, Peng Y D 2004 Rare Metal Mater. Eng. 33 337 (in Chinese) [易健宏, 彭元东 2004 稀有金属材料与工程 33 337]
[5]	Zhang Z X, Song X Y, Xu W W, Li D P, Liu X M 2011 J. Appl. Phys. 110 124318
[6]	Lu N D, Song X Y, Zhang J X 2010 Nanotech. 21 115708
[7]	Lu N D, Song X Y, Seyring M, Zhang J X 2009 J. Nanosci. Nanotech. 9 5141
[8]	Zhang Y, Song X Y, Xu W W, Zhang Z X 2012 Acta Phys. Sin. 61 016102 (in Chinese)[张扬, 宋晓艳, 徐文武, 张哲旭 2012 61 016102]
[9]	Song X Y, Lu N D, Seyring M, Xu W W, Zhang Z X, Zhang J X 2009 Appl. Phys. Lett. 94 023102
[10]	Xu W W, Song X Y, LI E D, Wei J, Zhang J X 2009 J. Appl. Phys. 105 104310
[11]	Xu W W, Song X Y, Lu N D, Huang C 2009 Acta Mater. 58 396
[12]	Xu W W, Song X Y, Lu N D, Seyring M, Rettenmayr M 2009 Nanoscale 1 238
[13]	Zhang Z X, Song X Y, Xu W W 2010 Acta Mater. 59 1808
[14]	Yuan Y, Delsante S, Borzone G 2010 J. Alloys Comp. 508 309
[15]	Carriker R C, Ludewig G H 1972 Appl. Phys. Lett. 20 250
[16]	Li D P, Song X Y, Zhang Z X, Lu N D, Qiao Y K, Liu X M 2012 Acta Metall. Sin. 48 1248 (in Chinese)[李定朋, 宋晓艳, 张哲旭, 卢年端, 乔印凯, 刘雪梅 2012 金属学报 48 1248]
[17]	Buschow K H J, Goot A S V 1969 J. Less-Common Met. 18 309
[18]	Zhang Z X, Song X Y, Xu W W, Seyring M, Rettenmayr M 2011 Scripta Mater. 62 594
[19]	Wang L L, Sun D C, Yang Q M 2005 Acta Phys. Sin. 54 5730 (in Chinese)[王玲玲, 孙德成, 杨全民 2005 54 5730]
[20]	Xu W W, Song X Y, Li E D, Wei J, Li L M 2009 Acta Phys. Sin. 58 3280 (in Chinese)[徐文武, 宋晓艳, 李尔东, 魏君, 李凌梅 2009 58 3280]
[21]	Bao L H, Li C, Tian Y, Tian J F, Hui C, Wang X J, Shen C M, Gao H J 2008 Chin. Phys. B 17 4585
[22]	Liu Y, Dong Y S, Yue J L, Li G Y 2006 Acta Phys. Sin. 55 6019 (in Chinese)[刘艳, 董云杉, 岳建岭, 李戈扬 2006 55 6019]

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