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

Yingjie Qiao; Xiaohong Zhang; Changqing Hong; Shaungquan Fang

doi:10.1117/12.780374

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

Yingjie Qiao^*
, Xiaohong Zhang
, Changqing Hong
, Shaungquan Fang

^*Corresponding author for this work

School of Astronautics

College of Materials Science and Chemical Engineering, Harbin Engineering University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

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.

Original language	English
Title of host publication	International Conference on Smart Materials and Nanotechnology in Engineering
DOIs	https://doi.org/10.1117/12.780374
State	Published - 2007
Event	International Conference on Smart Materials and Nanotechnology in Engineering - Harbin, China Duration: 1 Jul 2007 → 4 Jul 2007

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6423
ISSN (Print)	0277-786X

Conference

Conference	International Conference on Smart Materials and Nanotechnology in Engineering
Country/Territory	China
City	Harbin
Period	1/07/07 → 4/07/07

Keywords

CNTs
MoSi
Toughening mechanism

Access to Document

10.1117/12.780374

Cite this

@inproceedings{bbd9228792c44177aa33512627ae46c7,

title = "Microstructure and properties of MoSi2 intermetallic reinforced and toughening by carbon nanotube",

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.m1/2, 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.",

keywords = "CNTs, MoSi, Toughening mechanism",

author = "Yingjie Qiao and Xiaohong Zhang and Changqing Hong and Shaungquan Fang",

year = "2007",

doi = "10.1117/12.780374",

language = "英语",

isbn = "9780819465368",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "International Conference on Smart Materials and Nanotechnology in Engineering",

note = "International Conference on Smart Materials and Nanotechnology in Engineering ; Conference date: 01-07-2007 Through 04-07-2007",

}

Qiao, Y, Zhang, X, Hong, C & Fang, S 2007, Microstructure and properties of MoSi₂ intermetallic reinforced and toughening by carbon nanotube. in International Conference on Smart Materials and Nanotechnology in Engineering., 642367, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6423, International Conference on Smart Materials and Nanotechnology in Engineering, Harbin, China, 1/07/07. https://doi.org/10.1117/12.780374

Microstructure and properties of MoSi₂ intermetallic reinforced and toughening by carbon nanotube. / Qiao, Yingjie; Zhang, Xiaohong; Hong, Changqing et al.
International Conference on Smart Materials and Nanotechnology in Engineering. 2007. 642367 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6423).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Microstructure and properties of MoSi2 intermetallic reinforced and toughening by carbon nanotube

AU - Qiao, Yingjie

AU - Zhang, Xiaohong

AU - Hong, Changqing

AU - Fang, Shaungquan

PY - 2007

Y1 - 2007

N2 - 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.m1/2, 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.

AB - 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.m1/2, 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.

KW - CNTs

KW - MoSi

KW - Toughening mechanism

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