Premium
Identification of weak interfaces in composites using transmission electron microscopy
Author(s) -
PerezRigueiro,
Carmen Herrero,
J. LLorca
Publication year - 2000
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1046/j.1365-2818.2000.00657.x
Subject(s) - transmission electron microscopy , composite material , identification (biology) , materials science , electron microscope , electron , transmission (telecommunications) , microscopy , nanotechnology , optics , computer science , physics , biology , telecommunications , nuclear physics , botany
A new experimental technique was developed to identify crack paths with a resolution of nanometres in fibre‐reinforced composites. Cracks were introduced through Vickers indentations on one side of the sample prior to starting the thinning process. Indentations were placed close to the fibres in order to get enough cracks at the fibre/matrix interface in the electron‐transparent region of the thinned sample. The technique was used in a Nicalon‐fibre Al 2 O 3 matrix composite prior to and after a heat treatment at 1200 °C for 1 h. The analysis of the crack paths allowed the identification of the weakest interface in each condition.