نتایج جستجو برای: boron nitride nanotube reinforced composites

تعداد نتایج: 124027  

2014
An Pan Yongjun Chen

An effective solid-state reaction method is reported for synthesizing boron nitride nanotubes (BNNTs) in large scale and with high purity by annealing amorphous boron powder and ferric chloride (FeCl3) catalyst in ammonia atmosphere at elevated temperatures. FeCl3 that has rarely been utilized before is introduced not only as a catalyst but also as an efficient transforming agent which converts...

2012
B. Ramgopal Reddy K. Ramji B. Satyanarayana

In this paper, free vibration analysis of carbon nanotube (CNT) reinforced laminated composite panels is presented. Three types of panels such as flat, concave and convex are considered for study. Numerical simulation is carried out using commercially available finite element analysis software ANSYS. Numerical homogenization is employed to calculate the effective elastic properties of randomly ...

2013
Yafang Xue Qian Liu Guanjie He Kaibing Xu Lin Jiang Xianghua Hu Junqing Hu

The insulator characteristic of hexagonal boron nitride limits its applications in microelectronics. In this paper, the fluorinated hexagonal boron nitride nanosheets were prepared by doping fluorine into the boron nitride nanosheets exfoliated from the bulk boron nitride in isopropanol via a facile chemical solution method with fluoboric acid; interestingly, these boron nitride nanosheets demo...

Journal: :ACS nano 2014
Xiaoji G Xu Jian-Hua Jiang Leonid Gilburd Rachel G Rensing Kenneth S Burch Chunyi Zhi Yoshio Bando Dmitri Golberg Gilbert C Walker

Boron nitride (BN) is considered to be a promising substrate for graphene-based devices in part because its large band gap can serve to insulate graphene in layered heterostructures. At mid-infrared frequencies, graphene supports surface plasmon polaritons (SPPs), whereas hexagonal-BN (h-BN) is found to support surface phonon polaritons (SPhPs). We report on the observation of infrared polarito...

2014
B. Arash Q. Wang V. K. Varadan

The remarkable mechanical properties of carbon nanotubes, such as high elastic modulus and tensile strength, make them the most ideal and promising reinforcements in substantially enhancing the mechanical properties of resulting polymer/carbon nanotube composites. It is acknowledged that the mechanical properties of the composites are significantly influenced by interfacial interactions between...

2017
Bhushan Lal Jianxiang Wang Liyong Tong Bhushan L. Karihaloo

Bridging laws are essential in predicting the mechanical behaviour of conventional short-fibrereinforced composites and the emerging nanofibre-reinforced composites. In this paper, we first review some studies on the toughness of carbon nanotube-reinforced composites that is induced by the pull-out of the nanotubes from the matrix, and on the development of the corresponding bridging laws. A cl...

2013
Maho Yamaguchi Amir Pakdel Chunyi Zhi Yoshio Bando Dai-Ming Tang Konstantin Faerstein Dmitry Shtansky Dmitri Golberg

Multiwalled boron nitride nanotubes (BNNTs) have very attractive mechanical and thermal properties, e.g., elasticity, tensile strength, and high resistance to oxidation, and may be considered as ideal reinforcing agents in lightweight metal matrix composites. Herein, for the first time, Al-BNNT ribbons with various BNNT contents (up to 3 wt.%) were fabricated via melt spinning in an argon atmos...

2013
Sankaranarayanan Seetharaman Jayalakshmi Subramanian Khin Sandar Tun Abdelmagid S. Hamouda Manoj Gupta

In this study, magnesium composites with nano-size boron nitride (BN) particulates of varying contents were synthesized using the powder metallurgy (PM) technique incorporating microwave-assisted two-directional sintering followed by hot extrusion. The effect of nano-BN addition on the microstructural and the mechanical behavior of the developed Mg/BN composites were studied in comparison with ...

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