Study of the TiC1-x – TiO2 reactive interface

Réjasse, Florian; Trolliard, Gilles; Léchelle, J.; Rapaud, Olivier; Carlès, Pierre; Grauby, Olivier; Khodja, H.

doi:10.1016/j.actamat.2017.12.055

Cited by 13 publications

(3 citation statements)

References 33 publications

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“…Some researchers [35][36][37][38] have shown that the higher accumulated laser fluency, the higher degree of oxidation, i.e., with high oxygen diffusion, the more the samples will trap oxygen in the melted phase. It has also been reported that TiC could be easily oxidized forming TiO2 at high temperatures [39][40][41][42][43][44][45][46] . However, no peaks of TiO2 were found, indicating that the complete oxidation of TiC during laser ablation might take place in an environment with sufficient oxygen supply.…”

Section: Xrd Characterizationmentioning

confidence: 96%

Microstructure and wear performance of alumina/graphene coating on textured Al2O3/TiC substrate composites

Liu

Sun

Venturi

et al. 2021

Journal of the European Ceramic Society

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Section: Xrd Characterizationmentioning

confidence: 96%

Microstructure and wear performance of alumina/graphene coating on textured Al2O3/TiC substrate composites

Liu

Sun

Venturi

et al. 2021

Journal of the European Ceramic Society

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“…When performed on a micrometric scale, and beyond the advantage of being non-destructive methods, they also constitute an ideal tool for composite sintered pieces or for diffusion couples where the spatial extent of coexisting phases is limited [29]. In this work, the microprobe of the CEA/CNRS/IRAMIS/LEEL [30] The secondary electrons were collected by polarizing the sample holder (+90 V) thus limiting the uncertainty on the measured electrical charge.…”

Section: Chemical Analysis By Iga and Ibamentioning

confidence: 99%

Novel insight into the chemical analysis of light elements in oxycarbides

et al. 2018

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Pure powders of TiCxO(1-x) solid solution were synthesized through the carbothermal route. The chemical analysis of the light elements in the as-obtained TiCxO(1-x) oxycarbides powders were performed by Instrumented Gas Analysis (IGA). The cell parameters of the samples were determined with an accuracy of about 2% by means of X-ray powder diffraction and the internal standard method. As a result, a model correlating the cell parameters to the chemical composition was established. These reference TiCxO(1-x) oxycarbides powders were then sintered in order to obtain pellets of dense ceramics. After having determined that the sintering process does not change the chemical composition of the starting powder, chemical analysis of the different samples of the solid solution were successfully undertaken by Ion Beam Analysis techniques (IBA). The Nuclear Reaction Analysis (NRA) method -that was used to analyse light elements with very high sensitivity -was coupled with Rutherford Back Scattering (RBS) analysis in order to accurately determine the metallic over light elements ratio and to determine the stoichiometry of the phase on massive samples. Exhaustive simulations of the NRA spectra were performed and demonstrated that discrete compositions of the TiCxO(1-x) can be efficiently measured locally for bulk samples. Compared to IGA results, the relative amounts of carbon and oxygen of bulk materials were determined with a bias lower than 5%. This protocol being implemented for the TiCxO(1-x) system was then tested on HfCxO(1-x)with the same success.3

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“…When Ti is added, the crystallization process is more complex and three phases are expected: TiC, TiO (both in rock salt structure, space group Fm3-m) and β-SiC (zinc blende, space group F-43 m), as it was shown in [ 26 , 27 ]. It is well known that the isostructural compounds TiC and TiO can form a solid solution TiO 1-x C x [28][29][30][31][32][33] . TiC -SiC systems can create solid solution either in zinc blende, or in rock salt structure [34][35][36] .…”

Section: Introductionmentioning

confidence: 99%

Cracks, Porosity and Microstructure of Ti Modified Polymer-Derived Sioc Revealed by Absorption-, XRD- and XRF-Contrast 2D and 3D Imaging

et al. 2020

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Morphology, phase composition, cracks and porosity are investigated in monolithic Ti modified SiOC polymer-derived ceramics pyrolyzed at 10 0 0 °C and 140 0 °C using synchrotron X-ray full field absorptioncontrast tomographic microscopy and scanning XRF-and XRD-contrast microscopy. Samples pyrolyzed at 10 0 0 °C show a crack-free structure, but pyrolysis at 1400 °C results in formation of cracks and at higher Ti content also shows porosity. Tomography revealed the formation of a layered morphology that varies in terms of crystallographic structure and/or Ti stoichiometric concentration. The microstructural observations and electrical conductivity are discussed in terms of pyrolysis temperature and Ti content.

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Study of the TiC1-x – TiO2 reactive interface

Cited by 13 publications

References 33 publications

Microstructure and wear performance of alumina/graphene coating on textured Al2O3/TiC substrate composites

Microstructure and wear performance of alumina/graphene coating on textured Al2O3/TiC substrate composites

Novel insight into the chemical analysis of light elements in oxycarbides

Cracks, Porosity and Microstructure of Ti Modified Polymer-Derived Sioc Revealed by Absorption-, XRD- and XRF-Contrast 2D and 3D Imaging

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