Mapping of Wear Mechanism for Mechanical Alloyed Aluminum Carbon Nanotube Composites—An In Situ Analysis

2020 ◽  
Vol 143 (2) ◽  
Author(s):  
P. Manikandan ◽  
A. Elaya Perumal ◽  
R. Franklin Issac
Keyword(s):  
Wear Mechanism ◽  
Polynomial Regression ◽  
Research Work ◽  
In Situ Analysis ◽  
Mechanically Alloyed ◽  
Surface Fatigue ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Wear Maps

Abstract This research work investigates the root causes of wear on the tribo surface of mechanically alloyed Aluminum/CNT composite through a simulated in situ analysis. The wear maps are developed using the second-order polynomial regression equation for the Aluminum/CNT composite to discriminate the wear mechanisms at different levels of their influencing factors and milling parameters. As a result, the predominant wear mechanism is identified as surface fatigue for Aluminum/CNT composite under high loading dry sliding condition. This study also reveals the modes for eliminating the severe wear at the tribo-surfaces. Aluminum/CNT1 wt% composite fabricated with the mechanical alloying parameters above 6 h of milling time and above 5 rps of milling speed eliminates the delamination under low level of tribological parameters, and it achieves the minimal wear-rate of 30.5 × 10−6 g/m and coefficient of friction (CoF) of 0.346.

scholarly journals Polyaniline-carbon nanotube composites

2008 ◽  
Vol 80 (11) ◽  
pp. 2377-2395 ◽  
Author(s):  
Pandi Gajendran ◽  
Ramiah Saraswathi
Keyword(s):  
Carbon Nanotube ◽  
Photoelectron Spectroscopy ◽  
Evaluation Studies ◽  
Mechanical And Thermal Properties ◽  
Sensors And Actuators ◽  
Γ Radiation ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Microscopy Techniques

The key developments in polyaniline-carbon nanotube (PANI-CNT) composites are reviewed. Apart from in situ chemical polymerization and electrochemical deposition, a number of interesting approaches including the use of aniline functionalized CNTs and ultrasound/microwave/γ-radiation initiated polymerization have been used in the preparation of composites. The structure and properties of these composites have been investigated by a variety of techniques including absorption, infrared (IR), Raman, X-ray photoelectron spectroscopy methods, scanning electron and scanning probe microscopy techniques, cyclic voltammetry, and thermogravimetry. The experimental results indicate favorable interaction between PANI and CNTs. The CNT content in these composites controls their conductive, mechanical, and thermal properties. The most interesting characteristic is their easy dispersibility in aqueous solution. The performance evaluation studies of PANI-CNT composites in a number of applications including supercapacitors, fuel cells, sensors, and actuators are highlighted.

In Situ Construction of Redox-Active Covalent Organic Frameworks/Carbon Nanotube Composites as Anode of Lithium-Ion Batteries

2022 ◽  
Author(s):  
Xiubei Yang ◽  
Chao Lin ◽  
Diandian Han ◽  
Gaojie Li ◽  
Chao Huang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Active Sites ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Covalent Organic Frameworks ◽  
Redox Active ◽  
Reversible Redox ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites

Covalent organic frameworks (COFs) with reversible redox-active sites showed great potential application in constructing electrode materials of lithium-ion batteries (LIBs), whereas their further application is largely restricted by the poor...

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