Morphological Characteristics of W-Nanowires after Selective Etching

Article Preview

Abstract:

An eutectic NiAl–1.5 at.% W alloy prepared by using directionally solidified (DS)was employed as a source for producing W-nanowires. Several growth rate of 8,15,25/s was respectively used at a temperature gradient of ~240 K/cm in a Bridgman-type directional solidification furnace. A combined stability diagram was applied to predict proper conditions for the selective dissolution of NiAl matrix to get W-wires. Etching in a mixture of HCl:H2O2 released parallel aligned W-nanowires with a wire diameter of ~500 nm. Different morphologies, such as nanobelts, lotus-shaped, conical of W-nanowires are obtained at the different conditions.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 1004-1005)

Pages:

24-27

Citation:

Online since:

August 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Srdjan Milenkovic, Achim Walter Hassel, Phys. Status Solidi A 206, No. 3, 455– 461 (2009).

Google Scholar

[2] A. W. Hassel, B. Bello-Rodriguez, A. J. Smith, Y. Chen, and S. Milenkovic, Phys. Status Solidi B 247, 2380 (2010).

Google Scholar

[3] Stefanie Drensler, Cezarina Cela Mardare, Srdjan Milenkovic, and Achim Walter Hassel, Phys. Status Solidi A 209 , No 5, 854 (2012).

DOI: 10.1002/pssa.201100793

Google Scholar

[4] D. Q. Gao, X. Q. Zhou, Y. Xu, Z. H. Zhang, and D. S. Xue, Solid State Commun. 150, 127 (2010).

Google Scholar

[5] A. Ghahremaninezhada and A. Dolati, J. Alloys Compd. 480, 275 (2009).

Google Scholar

[6] S. Thongmee, H. L. Pang, J. B. Yi, J. Ding, J. Y. Lin, and L.H. Van, Acta Mater. 57, 2482 (2009).

Google Scholar

[7] Srdjan Milenkovic, Stefanie Drensler, and Achim Walter Hassel, Phys. Status Solidi A 208, No. 6, 1259–1264 (2011).

DOI: 10.1002/pssa.201000968

Google Scholar

[8] Qin Hu, Lin Liu, Zhilong Zhao, Jun Zhang, Zhiheng Fu, Rare Metal Materials and Engineering, Vol. 41, 1863 (2012), In Chinese.

Google Scholar

[9] Achim Walter Hassel, Srdjan Milenkovic, and Andrew Jonathan Smith, Phys. Status Solidi A 207, No. 4, 858–863 (2010).

Google Scholar