采用液相脉冲放电技术,在NiSO_4溶液中用NaH_2PO_2为还原剂,制备出了Ni-P合金超细粉体材料.将Ni-P合金粉在200～450℃下退火处理,并通过X射线衍射(XRD)、透射电镜(TEM)和场发射扫描电镜(FESEM)对退火前后Ni-P合金粉的结构、形貌进行了分析.用振动样品磁强计(VSM)对Ni-P合金粉进行了磁性能分析.结果表明所制备的超细Ni-P合金粉为非晶结构,颗粒直径在300～500nm之间,颗粒之间紧密结合成链枝状形貌.Ni-P合金粉在250～280℃退火后具有良好的软磁性能,250℃退火后矫顽力降低至0.437×10~(-4)T.
Ultrafine nickel-phosphorus powders were prepared by pulse discharging in NiSO_4 solution containing the reducing agent of NaH_2PO_2.The nickel-phosphorus powders were annealed at temperatures ranging from 200-450℃ and then analyzed by TEM,FESEM and XRD.The magnetic properties of the products was characterized by VSM.The results showed that the ultrafine nickel-phosphorus powders were amorphous.The grains with diameters between 300 and 500nm were linked tightly in the form of chain-liked structures.Excellent soft magnetic performance was obtained after annealing at a temperature of 250 or 280℃,and the coercivity of nickel-phosphorus powders was reduced to 0.437×10~(-4)T after annealing at the temperature of 250℃.
参考文献
| [1] | Hasegawa R .[J].Materials Science and Engineering A,2004,375-377:90-97. |
| [2] | Marin P;Hernando A .[J].Journal of Magnetism and Magnetic Materials,2000,215-216:729-734. |
| [3] | Chiriac H;Marinescu C S;(O)vári T A et al.[J].Sensors and Actuators,1999,76(1-3):208-212. |
| [4] | Yamaguchi M;Miyazawa Y;Kaminishi K et al.[J].Journal of Magnetism and Magnetic Materials,2004,268(1-2):170-177. |
| [5] | L.K. Varga .Soft magnetic nanocomposites for high-frequency and high-temperature applications[J].Journal of Magnetism and Magnetic Materials,2007(2):442-447. |
| [6] | Pavol Vojtanik .Magnetic relaxations in amorphous soft magnetic alloys[J].Journal of Magnetism and Magnetic Materials,2006(2):159-163. |
| [7] | Makino A;Kubota T;Makabe M et al.[J].Materials Science and Engineering B,2008,148(1-3):166-170. |
| [8] | Guo S F;Sun Y Y;Pan J et al.[J].Journal of Alloys and Compounds,2008,458(1-2):214-217. |
| [9] | He ZQ;Wang XL;Zhao ZY;Quan BY .Formation and mechanical behavior of (Fe0.5Ni0.5)(80-x)MoxB20 (x=0-8) amorphous alloys[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2008(15/16):1683-1689. |
| [10] | Hollmark M;Tkatch V I;Grishin A .[J].IEEE Transactions on Magnetics,2001,37(04):2278-2280. |
| [11] | Torrens-Serra J;Bruna P;Roth S et al.[J].Intermetallics,2009,17(1-2):79-85. |
| [12] | Alleg S;Azzazaa S;Bensalema R et al.[J].Journal of Alloys and Compounds,2009,48(1-2):86-89. |
| [13] | Shokrollahi H .[J].Materials & Design,2009,30(09):3374-3387. |
| [14] | 张静,陈学定,王翠霞,魏恒斗.机械合金化法制备Ni-Zr非晶软磁合金粉末的研究[J].金属功能材料,2009(01):4-8,12. |
| [15] | 张世远;路权;薛荣华.磁性材料基础[M].北京:科学出版社,1988:285-292. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%