Synergistic effect of hybrid carbon nanotube and graphene nanoplatelets reinforcement on processing, microstructure, interfacial stress and mechanical properties of Al2O3 nanocomposites

被引：41

作者：

Rahman, O. S. Asiq ^{[1
]}

Sribalaji, M. ^{[1
]}

Mukherjee, Biswajyoti ^{[1
]}

Laha, Tapas ^{[2
]}

Keshri, Anup Kumar ^{[1
]}

机构：

[1] Indian Inst Technol Patna, Mat Sci & Engn, Bihta Kanpa Rd,Amhara PO, Patna 801103, Bihar, India

[2] Indian Inst Technol Kharagpur, Met & Mat Engn, Kharagpur 721302, W Bengal, India

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 02期

关键词：

Spark plasma sintering; Nanocomposites; Interfaces; Toughness and toughening; Mechanical properties; ALUMINA; COMPOSITES; DENSIFICATION; CONDUCTIVITY; FABRICATION; DISPERSION; BEHAVIOR; LAYER; STEEL; MULTI;

D O I：

10.1016/j.ceramint.2017.10.160

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Al2O3, Al2O3-1 wt% Carbon Nanotube (CNT) and Al2O3-1 wt% CNT-0.5 wt% Graphene Nanoplatelets (GNP) were consolidated by spark plasma sintering at a temperature of 1500 degrees C. Spray drying technique was used for uniformly distributing the CNTs and GNPs. Fracture toughness of Al2O3 pellet drastically increased to 168% on addition of CNTs, while substantial improvement of 250% was seen on the addition of both CNTs and GNPs. Interfacial shear stress for Al2O3-CNT-GNP was found to be 350-1100 MPa. Novel toughening mechanisms such as CNT yarning and CNT embedded graphene was found responsible for the drastic improvement in toughness.

引用

页码：2109 / 2122

页数：14

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