TY - JOUR
T1 - Physical, mechanical and microstructural characterization of TiC–ZrN ceramics
AU - Nguyen, Thang Phan
AU - Pazhouhanfar, Yaghoub
AU - Delbari, Seyed Ali
AU - Sabahi Namini, Abbas
AU - Babapoor, Aziz
AU - Mohammadpourderakhshi, Yasaman
AU - Shaddel, Shahrzad
AU - Le, Quyet Van
AU - Shokouhimehr, Mohammadreza
AU - Shahedi Asl, Mehdi
N1 - Publisher Copyright:
© 2020 Elsevier Ltd and Techna Group S.r.l.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - This study aims to investigate the impact of zirconium nitride (ZrN) additive on the microstructural features and physical-mechanical characteristics of TiC. For this objective, two different samples, namely monolithic TiC and TiC-5 wt% ZrN, were produced by spark plasma sintering method at 1900 °C for 10 min under 40 MPa. X-ray diffraction, field emission scanning electron microscopy, and thermodynamical evaluations confirmed the formation of a single solid solution of (Ti,Zr)(C,N), along with a carbon-rich secondary phase in the doped ceramic. The monolithic TiC provided a higher relative density (95.5%) than the ZrN-doped sample. The fractographical assessment revealed a change in the fracture mode of TiC from transgranular to intergranular with introducing the ZrN additive. Reinforcing TiC with ZrN resulted in a Vickers hardness of 2640 HV0.1 kg, a flexural strength of 444 MPa, and a thermal conductivity of 14.9 W/mK. Furthermore, the TiC–ZrN sample presented a higher coefficient of friction (0.37 on average) compared to the monolithic TiC (0.34 on average).
AB - This study aims to investigate the impact of zirconium nitride (ZrN) additive on the microstructural features and physical-mechanical characteristics of TiC. For this objective, two different samples, namely monolithic TiC and TiC-5 wt% ZrN, were produced by spark plasma sintering method at 1900 °C for 10 min under 40 MPa. X-ray diffraction, field emission scanning electron microscopy, and thermodynamical evaluations confirmed the formation of a single solid solution of (Ti,Zr)(C,N), along with a carbon-rich secondary phase in the doped ceramic. The monolithic TiC provided a higher relative density (95.5%) than the ZrN-doped sample. The fractographical assessment revealed a change in the fracture mode of TiC from transgranular to intergranular with introducing the ZrN additive. Reinforcing TiC with ZrN resulted in a Vickers hardness of 2640 HV0.1 kg, a flexural strength of 444 MPa, and a thermal conductivity of 14.9 W/mK. Furthermore, the TiC–ZrN sample presented a higher coefficient of friction (0.37 on average) compared to the monolithic TiC (0.34 on average).
KW - Characterization
KW - Coefficient of friction
KW - Spark plasma sintering
KW - TiC
KW - ZrN
UR - http://www.scopus.com/inward/record.url?scp=85086506608&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2020.05.292
DO - 10.1016/j.ceramint.2020.05.292
M3 - Article
AN - SCOPUS:85086506608
SN - 0272-8842
VL - 46
SP - 22154
EP - 22163
JO - Ceramics International
JF - Ceramics International
IS - 14
ER -