Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13087/2307
Title: The effects of in-situ formed phases on the microstructure, mechanical properties and electrical conductivity of spark plasma sintered B4C containing Y2O3
Authors: Başkut, S.
Özer, S.C.
Turan, S.
Keywords: B4C
Electrical conductivity
Fracture toughness
YB4
YB6
Boron carbide
Electric conductivity
Hardness
Spark plasma sintering
Ytterbium compounds
Effect of In
Electrical conductivity
Hardness values
Microstructural investigation
Microstructure mechanical properties
Spark plasma
Spark plasma sintering techniques
Fracture toughness
Issue Date: 2021
Publisher: Elsevier Ltd
Abstract: B4Cs without additive and 5, 10 and 15 wt % Y2O3 containing B4Cs were produced by using spark plasma sintering (SPS) technique at different temperatures such as 1820, 1930 and 2030 °C and the effects of in-situ formed phases on the mechanical properties and electrical conductivity of B4C were investigated. Microstructural investigations showed that the YB4 phase was formed at 1820 °C and the YB6 phase at 1930 °C. The hardness values of B4C-YB4 composites were higher than the value of B4C sintered at 1820 °C while lower than that of sintered at 2030 °C. The fracture toughness steadily increased with increasing Y2O3 content. The electrical conductivity of B4C sintered at 2030 °C increased by ? 40 % with the contribution of in-situ formed YB4 phase. Compared to B4C-YB4, B4C-YB6’s hardness was higher, while its fracture toughness and electrical conductivity were lower. © 2021 Elsevier Ltd
URI: http://doi.org/10.1016/j.jeurceramsoc.2021.11.054
https://hdl.handle.net/20.500.13087/2307
ISSN: 0955-2219
Appears in Collections:Malzeme Bilimi ve Mühendisliği Bölümü Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu

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