Next Article in Journal
Production and Characterization of a New Bacterial Cellulose/Poly(Vinyl Alcohol) Nanocomposite
Next Article in Special Issue
Optimization of Microwave-Based Heating of Cellulosic Biomass Using Taguchi Method
Previous Article in Journal
Application-Oriented Chemical Optimization of a Metakaolin Based Geopolymer
Previous Article in Special Issue
Tensile and Compressive Responses of Ceramic and Metallic Nanoparticle Reinforced Mg Composites
Open AccessArticle

Synthesis and Characterization of Nano Boron Nitride Reinforced Magnesium Composites Produced by the Microwave Sintering Method

1
Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576
2
Technology Development Centre, ITE College Central, H1-01, 2 Ang Mo Kio Drive, Singapore 567720
3
Mechanical and Industrial Engineering Department, Qatar University, Doha P.O. Box No. 2713, Qatar
*
Author to whom correspondence should be addressed.
Materials 2013, 6(5), 1940-1955; https://doi.org/10.3390/ma6051940
Received: 11 April 2013 / Revised: 3 May 2013 / Accepted: 6 May 2013 / Published: 10 May 2013
(This article belongs to the Special Issue Microwave Processing of Materials)
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 pure Mg using the structure-property correlation. Microstructural characterization revealed uniform distribution of nano-BN particulates and marginal grain refinement. The coefficient of thermal expansion (CTE) value of the magnesium matrix was improved with the addition of nano-sized BN particulates. The results of XRD studies indicate basal texture weakening with an increase in nano-BN addition. The composites showed improved mechanical properties measured under micro-indentation, tension and compression loading. While the tensile yield strength improvement was marginal, a significant increase in compressive yield strength was observed. This resulted in the reduction of tension-compression yield asymmetry and can be attributed to the weakening of the strong basal texture. View Full-Text
Keywords: metal matrix composites; microwave sintering; mechanical properties; microstructure; X-ray diffraction; scanning electron microscopy metal matrix composites; microwave sintering; mechanical properties; microstructure; X-ray diffraction; scanning electron microscopy
Show Figures

Figure 1

MDPI and ACS Style

Seetharaman, S.; Subramanian, J.; Tun, K.S.; Hamouda, A.S.; Gupta, M. Synthesis and Characterization of Nano Boron Nitride Reinforced Magnesium Composites Produced by the Microwave Sintering Method. Materials 2013, 6, 1940-1955.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop