Mechanical Properties of Carbon Nanotubes / Hydroxyapatite Composites Prepared by Spark Plasma Sintering

2006 ◽  
Author(s):  
Masa-aki Tanaka
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

A Review of Spark Plasma Sintering of Carbon Nanotubes Reinforced Titanium-Based Nanocomposites: Fabrication, Densification, and Mechanical Properties

JOM ◽  
2018 ◽  
Vol 71 (2) ◽  
pp. 567-584 ◽  
Author(s):  
Avwerosuoghene Moses Okoro ◽  
Senzeni Sipho Lephuthing ◽  
Samuel Ranti Oke ◽  
Oluwasegun Eso Falodun ◽  
Mary Ajimegoh Awotunde ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

Preparation and Characterization of Mechanical Properties of Hydroxyapatite/Carbon Nanotube Laminated Ceramic Composites Consolidated by Spark Plasma Sintering

2018 ◽  
Vol 913 ◽  
pp. 466-472
Author(s):  
Ye Meng ◽  
Wen Jiang Qiang ◽  
Jing Qin Pang
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Flexural Strength ◽  
Spark Plasma Sintering ◽  
Strain Curve ◽  
Ceramic Composites ◽  
Stress Strain ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Stratified Structure

Laminated xCNTs-HAP/yCNTs-HAP ceramic composites were consolidated using a spark plasma sintering(SPS) technique at SPS temperature 900°C, pressure 40MPa and holding time 5min. The effect of carbon nanotubes content and thickness of each layer on mechanical properties of the composites was investigated. It was demonstrated that the stratified structure improvedthe flexural strength obviously. All the flexural strength of laminar compositewashigher than that of single CNTs-HAP ceramic, up to 112.4MPa. Since the matrix of each layer wereHAP, the difference liesonly in the content of carbon nanotubes, thus avoiding the common problem of the interlayer bonding in other layered composites with different materials. In order to characterize the toughness of the layered composite, the stress-strain curve was compared showingthat the existence of the stratified structure improved the stress-strain obviously.

Dispersion of Carbon Nanotubes in Alumina Using a Novel Mixing Technique and Spark Plasma Sintering of the Nanocomposites with Improved Fracture Toughness

2014 ◽  
Vol 89 ◽  
pp. 76-81 ◽  
Author(s):  
Nabi Bakhsh ◽  
Fazal Ahmad Khalid ◽  
Abbas Saeed Hakeem ◽  
Tahar Laoui
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Fracture Toughness ◽  
Spark Plasma Sintering ◽  
Alumina Powder ◽  
Alumina Matrix ◽  
Pull Out ◽  
Plasma Sintering ◽  
Structural Applications ◽  
Spark Plasma

The present study emphasizes on the fabrication of carbon nanotubes (CNTs) reinforced alumina nanocomposites for structural applications. A new technique for the mixing and dispersion of CNTs in alumina powder was employed. Spark plasma sintering (SPS) technique was used for the fabrication of nanocomposites with varying amounts of as-received CNTs (1, 2 and 3 weight %) in alumina matrix. Densification behavior, hardness and fracture toughness of the nanocomposites were studied. A comparison of mechanical properties of the desired nanocomposites was presented. An improvement in fracture toughness of approximately 14% at 1 wt% CNT-alumina nanocomposite over monolithic alumina compacts was observed due to better dispersion of CNTs in alumina matrix that ultimately helped in grain growth suppression to provide finer grain in the nanocomposites. The fractured surfaces also revealed the presence of CNTs bridging and pull out that aided in the improvement of mechanical properties. The synthesized samples were characterized using field emission scanning electron microscopy, X-ray diffraction, Raman spectroscopy, densification, Vickers hardness testing and fracture toughness measurements.

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