TY - JOUR
T1 - Microstructural and mechanical characterization of spark plasma sintered TiC ceramics with TiN additive
AU - Pazhouhanfar, Yaghoub
AU - Sabahi Namini, Abbas
AU - Delbari, Seyed Ali
AU - Nguyen, Thang Phan
AU - Le, Quyet Van
AU - Shaddel, Shahrzad
AU - Pazhouhanfar, Morteza
AU - Shokouhimehr, Mohammadreza
AU - Shahedi Asl, Mehdi
N1 - Publisher Copyright:
© 2020 Elsevier Ltd and Techna Group S.r.l.
PY - 2020/8/1
Y1 - 2020/8/1
N2 - This investigation intends to study the influence of titanium nitride (TiN) additive on the sintering behavior, mechanical features and microstructural development of TiC-based substances. For this objective, two different samples, namely monolithic TiC and TiC-5 wt% TiN, were sintered at 1900 °C using the SPS method. The specimens were held at the ultimate temperature for 10 min under 40 MPa. X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) were implemented to characterize the as-produced specimens. Introducing TiN increased the relative density of TiC by around 1.5%, standing next to 97%. The assessments revealed the creation of non-stoichiometric TiC1-x along with some graphitized carbon phases in the undoped ceramic. By contrast, TiN additive completely dissolved into the TiC matrix in the composite sample and a new in-situ phase (C3N4) appeared. Finally, a Vickers hardness of ~2750 HV0.1 and a flexural strength of ~450 MPa were achieved for the TiN-doped specimen.
AB - This investigation intends to study the influence of titanium nitride (TiN) additive on the sintering behavior, mechanical features and microstructural development of TiC-based substances. For this objective, two different samples, namely monolithic TiC and TiC-5 wt% TiN, were sintered at 1900 °C using the SPS method. The specimens were held at the ultimate temperature for 10 min under 40 MPa. X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) were implemented to characterize the as-produced specimens. Introducing TiN increased the relative density of TiC by around 1.5%, standing next to 97%. The assessments revealed the creation of non-stoichiometric TiC1-x along with some graphitized carbon phases in the undoped ceramic. By contrast, TiN additive completely dissolved into the TiC matrix in the composite sample and a new in-situ phase (C3N4) appeared. Finally, a Vickers hardness of ~2750 HV0.1 and a flexural strength of ~450 MPa were achieved for the TiN-doped specimen.
KW - CN
KW - Solid solution
KW - SPS
KW - TiC
KW - TiN
UR - http://www.scopus.com/inward/record.url?scp=85084395110&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2020.04.215
DO - 10.1016/j.ceramint.2020.04.215
M3 - Article
AN - SCOPUS:85084395110
SN - 0272-8842
VL - 46
SP - 18924
EP - 18932
JO - Ceramics International
JF - Ceramics International
IS - 11
ER -