In-situ Observation of Fracture Behavior on Nano Structure in NITE SiC/SiC Composite by HVEM

We have been successfully done in situ observation on the sequence of fracture event at the interface of NITE SiC/SiC composite examined by using miniaturized double notched shear specimen for TEM prepared by Focused Ion Beam method. In this study, we used nano-mechanics TEM experimental apparatus t...

Full description

Saved in:
Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 18; no. 16; pp. 162013 - 4
Main Authors Shibayama, Tamaki, Matsuo, Genichiro, Hamada, Kouichi, Watanabe, Seiichi, Kishimoto, Hirotatsu
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 29.10.2011
Subjects
Carbon
Crack initiation
Displacement
Fracture mechanics
High voltages
Ion beams
Nanostructure
Particulate composites
Shear strength
Silicon carbide
Transmission electron microscopy
Online AccessGet full text

Cover

More Information
Summary:We have been successfully done in situ observation on the sequence of fracture event at the interface of NITE SiC/SiC composite examined by using miniaturized double notched shear specimen for TEM prepared by Focused Ion Beam method. In this study, we used nano-mechanics TEM experimental apparatus to investigate not only microstructure evolution and but also load and displacement curve at once in High Voltage Electron Microscope. Our results summarize as follows. Cracks were initiated at the interface between carbon coating layer on the SiC fiber and SiC matrices, and propagated along the interface. Load drop in the load and displacement curve during in-situ TEM was clearly observed at the crack initiation. The shear strength by using the miniaturized specimen is about ten times higher than that obtained by the standard testing.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/18/16/162013