Synthesis of Ti&amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;SiC&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-Bicarbide Based Ceramic by Electro-Thermal Explosion

Nasr-Eddine Chakri,Badis Bendjemil,Zoubida Habes,Abdelaziz Toubal

doi:10.4236/aces.2014.42027

Abstract

A polycrystalline dense Ti3SiC2 based ceramic material has been produced by several techniques. The effect of addition of TiC and SiC is also studied. The Ti3SiC2 material shows extraordinary electrical, thermal and mechanical properties. Furthermore, it shows a damage tolerance capability and oxidation resistance. In this work, we have synthesized Ti3SiC2 by electro-thermal explosion chemical reaction (ETE) with high current density (900 Amperes/a.u) followed by uniaxial pressure. The structural properties of the as-prepared materials are studied by x-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive x-ray spectroscopy (EDX) techniques. The chemical cartography, imaging and electronic properties are investigated using Ultra-STEM and electron high energy loss resolution spectroscopy (EELS) techniques, respectively. The surface of Ti3SiC2 is characterized by means of X-ray photoelectron spectroscopy (XPS). High resolution C 1s, Si 2p, Ti 2p, Ti 3s core level spectra are explained in terms of crystallographic and electronic structure. Valence band spectrum is performed to confirm the validity of the theoretical calculations.

Highlights

Ti3 SiC2 Based Ceramic, Intermetallic, Bicarbide, Electro-Thermal Explosion Reaction (ETE), Valence Band Spectra, Core Level Excitation
It shows a great resistance against oxidation, extreme hardness, and above all, it can retain its strength to temperatures that makes the best superalloys available today usable
The calculations were based on the local-density approximation (LDA) and the Hedin-Lundqvist [12] parameterization was used for the exchange and correlation potential

Summary

Introduction

Ti3 SiC2 Based Ceramic, Intermetallic, Bicarbide, Electro-Thermal Explosion Reaction (ETE), Valence Band Spectra, Core Level Excitation. How to cite this paper: Chakri, N.-E., et al (2014) Synthesis of Ti3SiC2-Bicarbide Based Ceramic by Electro-Thermal Explosion. Pampuch et al [12] produced a hard Ti3SiC2-based material with a high young’s modulus of 326 GPa through self-propagating high-temperature synthesis and ceramic processing.

Results

Conclusion