Publication: Reactive spark plasma sintering of TiB2–SiC–TiN novel composite
Program
KU-Authors
KU Authors
Co-Authors
Asl, Mehdi Shahedi
Delbari, Seyed Ali
Shayesteh, Farzad
Ahmadi, Zohre
Advisor
Publication Date
2019
Language
English
Type
Journal Article
Journal Title
Journal ISSN
Volume Title
Abstract
The effects of adding SiC as a reinforcement and TiN as an additive on TiB2-based composites fabricated by the spark plasma sintering (SPS) technique were investigated. SPS was implemented at the sintering conditions of 1900 degrees C temperature, 7 min holding time and 40 MPa pressure. Adding these two secondary phases had noticeable effects on the microstructure of TiB2-based composites. A relative densities of 99.9% was obtained for TiB2-SiC-TiN composite. Detection of in-situ formed phases and investigation on them were done using SEM, XRD, EDS and thermodynamic assessment. These evaluations proved the formation of in-situ phases of TiC, BN nano-platelets, TiSi and B4C in the TiB2-based composite codoped with SiC and TiN. Formation of these in-situ phases had fascinating effects on the sinterability and ultimate microstructure of titanium diboride.
Description
Source:
International Journal of Refractory Metals & Hard Materials
Publisher:
Elsevier Sci Ltd
Keywords:
Subject
Materials science, Metallurgy, Metallurgical engineering