TY - JOUR
T1 - Impact behaviour of MWCNTs reinforced YSZ and Al
2O
3 ceramic-nanocomposites prepared via vacuum hot-pressing technique
AU - Ramachandran, Karthikeyan
AU - Gnanasagaran, Constance L.
AU - Pazhani, Ashwath
AU - Kumar, Vishaal Harikrishna
AU - Xavior, M. Anthony
AU - Subramani, R Ram
AU - Arunkumar, T.
N1 - Open access CC-BY-NC-ND
PY - 2023/5
Y1 - 2023/5
N2 - Materials for structure-based aerospace applications are on high demand throughout the globe. Owing to its high strength to weight ratio and high stiffness, composites are potential candidates in aerospace, turbine and military applications. This paper concentrates on the impact behaviour of two nano-ceramic composites - yttria-stabilized zirconia (YSZ) and aluminium oxide (Al2O3) reinforced with multi-walled carbon nanotubes (MWCNTs) prepared via vacuum hot-pressing at 1600°C with a pressure of 35 MPa at varying MWCNTs contents (1, 3 & 5 wt.%). The composite tiles were examined for impact behaviour using gas gun at different velocities (50, 100 & 200 ms-1). The study indicated that the composites with 1 wt.% MWCNTs reinforced YSZ illustrated lower penetration compared to other composites owing to its higher interfacial bonding between MWCNTs and YSZ. On the other hand, alumina reinforced MWCNTs showcased a higher depth of penetration due to weak Van der Waals force of attraction between MWCNTs and alumina. The reinforcement of CNTs upto 3 wt.% worked as threshold for improvement in impact behaviour for ceramics whereas penetration values increase with increase of MWCNTs.
AB - Materials for structure-based aerospace applications are on high demand throughout the globe. Owing to its high strength to weight ratio and high stiffness, composites are potential candidates in aerospace, turbine and military applications. This paper concentrates on the impact behaviour of two nano-ceramic composites - yttria-stabilized zirconia (YSZ) and aluminium oxide (Al2O3) reinforced with multi-walled carbon nanotubes (MWCNTs) prepared via vacuum hot-pressing at 1600°C with a pressure of 35 MPa at varying MWCNTs contents (1, 3 & 5 wt.%). The composite tiles were examined for impact behaviour using gas gun at different velocities (50, 100 & 200 ms-1). The study indicated that the composites with 1 wt.% MWCNTs reinforced YSZ illustrated lower penetration compared to other composites owing to its higher interfacial bonding between MWCNTs and YSZ. On the other hand, alumina reinforced MWCNTs showcased a higher depth of penetration due to weak Van der Waals force of attraction between MWCNTs and alumina. The reinforcement of CNTs upto 3 wt.% worked as threshold for improvement in impact behaviour for ceramics whereas penetration values increase with increase of MWCNTs.
KW - Ceramics
KW - MWCNTs
KW - Nanocomposites
KW - Densification
KW - Hot-Pressing Technique and Impact behaviour
UR - http://www.scopus.com/inward/record.url?scp=85158816331&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2023.04.199
DO - 10.1016/j.jmrt.2023.04.199
M3 - Article
SN - 2238-7854
VL - 24
SP - 6595
EP - 6603
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
ER -