Microstructural and mechanical behavior of spark plasma sintered titanium carbide with hybrid reinforcement of tungsten carbide and carbon nanotubes

被引:32
作者
Sribalaji, M. [1 ]
Mukherjee, Biswajyoti [1 ]
Islam, Aminul [1 ]
Keshri, Anup Kumar [1 ]
机构
[1] Indian Inst Technol Patna, Mat Sci & Engn, Bihta Kanpa Rd, Patna 801103, Bihar, India
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 702卷
关键词
Hardness; Characterization; Ceramics; Composites; Powder methods; Grains and interfaces; HIGH TEMPERATURE CERAMICS; COMPOSITES; GRAPHENE; DENSIFICATION; NANOCOMPOSITE; ZRC;
D O I
10.1016/j.msea.2017.06.108
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
TiC, TiC-3.5 wt% WC and TiC-3.5 wt% WC-2 wt% CNT pellets were consolidated using spark plasma sintering technique at 1600 degrees C and 50 MPa pressure. Spray drying technique was used for the homogeneous dispersion of CNT in TiC matrix. Punch displacement data showed the relatively higher compaction of TiC on addition of 3.5 wt% of WC and 2 wt% of CNT. Raman spectra confirmed the retention of CNTs in spark plasma sintered pellet, While, HR-TEM micrographs infers the defect morphology of CNT after the sintering. Some CNTs were found to be defected with the bamboo like structure, which have ultimately provided the strong interface between TiC and CNT through mechanical interlocking mechanism. Hybrid reinforcement of WC and CNT has played a vital role in increasing the density of TiC pellet from 89% to 99% and in reducing its average grain size by similar to 31%. Further, improvement of 41% in hardness and 42% in elastic modulus were observed in sintered TiC pellet on addition of WC and CNT. Drastic improvement of 141% in fracture toughness value was found which was due to the higher critical energy release rate in TiC-3.5 wt% WC-2 wt% CNT pellet. Interfacial shear stress was evaluated using modified Cox model to investigate the higher critical energy release rate. CNT grain stitching and CNT grain gluing was found to be novel toughening mechanism apart from the conventional mechanism of CNT bridging, crack bifurcation and CNT pull out.
引用
收藏
页码:10 / 21
页数:12
相关论文
共 57 条
[1]  
Anstis GR, 1981, J AM CERAM SOC, V9, P64
[2]   Spark plasma sintered tantalum carbide-carbon nanotube composite: Effect of pressure, carbon nanotube length and dispersion technique on microstructure and mechanical properties [J].
Bakshi, Srinivasa R. ;
Musaramthota, Vishal ;
Virzi, David A. ;
Keshri, Anup K. ;
Lahiri, Debrupa ;
Singh, Virendra ;
Seal, Sudipta ;
Agarwal, Arvind .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (06) :2538-2547
[3]  
Balandin AA, 2011, NAT MATER, V10, P569, DOI [10.1038/nmat3064, 10.1038/NMAT3064]
[4]   Role of powder treatment and carbon nanotube dispersion in the fracture toughening of plasma-sprayed aluminum oxide-carbon nanotube nanocomposite [J].
Balani, Kantesh ;
Bakshi, Srinivasa Rao ;
Chen, Yao ;
Laha, Tapas ;
Agarwal, Arvind .
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2007, 7 (10) :3553-3562
[5]   Fabrication and characterization of sintered TiC-SiC composites [J].
Cabrero, J. ;
Audubert, F. ;
Pailler, R. .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2011, 31 (03) :313-320
[6]   Strengthening and toughening of carbon nanotube reinforced alumina nanocomposite fabricated by molecular level mixing process [J].
Cha, SI ;
Kim, KT ;
Lee, KH ;
Mo, CB ;
Hong, SH .
SCRIPTA MATERIALIA, 2005, 53 (07) :793-797
[7]   LOW-TEMPERATURE ELASTIC PROPERTIES OF ZRC AND TIC [J].
CHANG, R ;
GRAHAM, LJ .
JOURNAL OF APPLIED PHYSICS, 1966, 37 (10) :3778-&
[8]  
Chen Y., 2008, APPL PHYS LETT, V92
[9]  
Chen Y., 2008, APPL PHYS LETT, V92
[10]   Spark plasma sintering of TiC ceramic with tungsten carbide as a sintering additive [J].
Cheng, Lixia ;
Xie, Zhipeng ;
Liu, Guanwei .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2013, 33 (15-16) :2971-2977