Abstract
The polycrystalline dense Ti3SiC2 based ceramic have been prepared by several techniques. The effects on the addition of TiC or SiC are also studied. Ti3SiC2 has an unusual combination of electrical, thermal and mechanical extraordinary properties. It has furthermore damage tolerant and oxidation resistance. In this work we have produced Ti3SiC2 by electro-thermal explosion chemical reaction started with high current density (680 amperes) followed by uniaxial pressure. The microstructures of the materials were studied using XRD, SEM and EDX. The surface of Ti3SiC2 was studied by means of X-ray photoelectron spectroscopy (XPS). High resolution C1s, Si2p, Ti2p, Ti3s core level spectra are inspected in terms of electronic structure. Valence band spectra will be performed to confirm the validity of the theoretical calculations.
Highlights
The MAX phases constitute a group of ternary ceramics which has received intense attention over the last decade due to their unique combination of properties
The present study investigated the microstructures of materials using XRD, field emission scanning electron microscopy (FESEM) equipped by energy-dispersive X-ray microanalysis (EDX) analysis
The phase composition after Electro-thermal Explosion Reaction (ETE) reaction has been studied using the X-ray diffraction technique (Fig.3) The diffraction pattern of the combustion product formed upon ETE reaction in the starting mechanically alloyed powder Ti, C, and Si is seen to contain Ti3SiC2 bulk bicarbide base ceramic (TiC, SiC) and maybe TiSi2
Summary
The MAX phases constitute a group of ternary ceramics which has received intense attention over the last decade due to their unique combination of properties. The Ti3SiC2 is the most well studied MAX phase to date and it has turned out to be a promising candidate for high temperature applications. It is oxidation resistant, refractory and not susceptible to thermal shock. Most attempts to synthesis bulk Ti3SiC2 has been done starting with powders including pure titanium, but Ti powder is oxidising [1] and requires an inert atmosphere throughout the synthesis process which makes the procedures unsuitable for large scale production
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