Zan Bian Ph.D 2010-01-17

Hold my doctoral degree in Materials Science in June, 2001.  I joined Prof. Wei-hua Wang’s BMG group in Sept., 2001. My interesting is to prepare BMG composites.

Research interesting

Recently, my research focuses on the preparation of BMG composites, especially the composites containing the addition of carbon powder, carbon fiber or carbon nanotubes. Carbon nanotubes (CNTs) are introduced successfully into Zr-based bulk metallic glasses (BMGs), and the composites with the mixed structure of CNTs and ZrC phase dispersing randomly in the glassy matrix are obtained. CNTS still keep their tubular and multi-walled structure. It is found that the addition of carbon nanotubes has a significant effect on physical properties of BMGs. The composites have improved mechanical properties (the elastic moduli and Vicker’s hardness) relative to the undoped BMGs. Relative change of these parameters is more than 10%. The ultrasonic velocity and ultrasonic attenuation were changed drastically after introducing CNTs into BMG matrix. Ultrasonic attenuation coefficient increases rapidly with the increase of CNTs. The excellent wave absorption ability and ultrasonic attenuation characteristics of Zr-based BMG composites originates from the random dispersion of residual CNTs and ZrC phase, the formation of new interfaces, and the denser packed structure in the glass matrix of the composites. This work shows that the composites with lightweight and improved mechanical and physical properties might have potential of application in the field of shielding against acoustic sound or environmental noise.

Published Paper:

1. Z. Bian, M.X. Pan, Y. Zhang, D. Q. Zhao, W. H. Wang. Carbon nanotubes reinforced bulk metallic glass composite, Appl. Phys. Lett. 81 (2002), 4739-4741.

2. Z. Bian, R. J. Wang, M.X. Pan, D. Q. Zhao, W. H. Wang. Excellent wave absorption ability of Zr-based BMG composites containing carbon nanotubes, Advanced Mater., in press, 2003.

3. Z. Bian, R. J. Wang, M.X. Pan, D. Q. Zhao, Z. X. Wang, W. H. Wang. Strong ultrasonic attenuation characteristics of carbon-nanotubes-reinforced bulk metallic glass composite, Appl. Phys. Lett., in press, 2003.

4．Z. Bian, R. J. Wang, M.X. Pan, D. Q. Zhao, W. H. Wang. Preparation and acoustic properties of carbon nanotube reinforced bulk metallic glass composites, Journal of Metastable and Nanocrystalline, in press, 2003.

5. W. H. Wang, Z. Bian, P. Wen, Y. Zhang, M.X. Pan, D. Q. Zhao. Role of addition in formation and properties of Zr-based BMG, Intermetallics 10 (2002), 1249-1257.