TY - JOUR
T1 - Mechanical Property and Fracture Behavior of BaTiO3-Based Nanocomposites
AU - Jin Hwang, Hae
AU - Nakahira, Atsushi
AU - Sekino, Tohru
AU - Niihara, Koichi
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1994/2/1
Y1 - 1994/2/1
N2 - Dense and fine grained BaTiO3-based composites with the nano-sized SiC particulate were successfully fabricated by hot-pressing method. Mechanical properties and fracture behavior were investigated. High resolution TEM observation revealed that there were no conspicuous reaction phases in the interface between BaTiO3 and SiC. The crystal structure was changed from ferroelectric tetragonal to paraelectric cubic phase with increasing SiC, and finally was pseudo-cubic for BaTiO3 with more than 3vol% SiC. Mechanical properties such as fracture strength, fracture toughness, Young's modulus and so on were markedly improved by the incorporation of nano-sized SiC particulates. The improvement of mechanical properties, particularly, microhardness and Young's modulus might be caused by the crystal structural change as well as SiC addition. Fracture behavior and subcritical crack growth (SCG) phenomenon were also investigated using the indentation induced flaw method (IIF).
AB - Dense and fine grained BaTiO3-based composites with the nano-sized SiC particulate were successfully fabricated by hot-pressing method. Mechanical properties and fracture behavior were investigated. High resolution TEM observation revealed that there were no conspicuous reaction phases in the interface between BaTiO3 and SiC. The crystal structure was changed from ferroelectric tetragonal to paraelectric cubic phase with increasing SiC, and finally was pseudo-cubic for BaTiO3 with more than 3vol% SiC. Mechanical properties such as fracture strength, fracture toughness, Young's modulus and so on were markedly improved by the incorporation of nano-sized SiC particulates. The improvement of mechanical properties, particularly, microhardness and Young's modulus might be caused by the crystal structural change as well as SiC addition. Fracture behavior and subcritical crack growth (SCG) phenomenon were also investigated using the indentation induced flaw method (IIF).
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U2 - 10.2497/jjspm.41.1175
DO - 10.2497/jjspm.41.1175
M3 - Article
AN - SCOPUS:0028529710
VL - 41
SP - 1175
EP - 1180
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 10
ER -