Microstructure and properties of MoSi2 intermetallic reinforced and toughened by carbon nanotube

Yingjie Qiao; Xiaohong Zhang; Changqing Hong; Shaungquan Fang

doi:10.1117/12.780374

1 November 2007 Microstructure and properties of MoSi₂ intermetallic reinforced and toughened by carbon nanotube

Yingjie Qiao, Xiaohong Zhang, Changqing Hong, Shaungquan Fang

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 642367 (2007) https://doi.org/10.1117/12.780374
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

In this work, dense MoSi₂ reinforced by single-wall carbon nanotubes (SWNTs) was firstly prepared by hot pressure sintering. The effect of SWNTs contents and sintered temperature on the mechanical properties of MoSi₂-CNTs composite was studied. The microstructure, phase constitution and interfacial bonding were investigated Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and X-ray diffraction (XRD) pattern. The experimental results show that the fracture toughness of SWNTs/MoSi₂ composite reaches 4.0±0.5 MPa.m^1/2, which is about twice as high as that of unreinforced MoSi₂. The flexure strength of the composite also increases by 75%. The reinforcement mechanism was discussed based on the microstructure investigation. The broken nanotubes and pullout of SWNTs at interfaces are efficient in transferring the load from the MoSi₂ matrix to the nanotubes, leading to the improvement of the mechanical properties.

Citation Download Citation

Yingjie Qiao, Xiaohong Zhang, Changqing Hong, and Shaungquan Fang "Microstructure and properties of MoSi₂ intermetallic reinforced and toughened by carbon nanotube", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 642367 (1 November 2007); https://doi.org/10.1117/12.780374

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available