Role of some technological parameters during carburizing titanium dioxide

Maı̂tre, Alexandre; Tétard, D.; Lefort, Pierre

doi:10.1016/s0955-2219(99)00074-6

Cited by 62 publications

(29 citation statements)

References 12 publications

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“…It has been also verified that the carbon particle (grain) size, the homogeneity of titanium dioxide-carbon mixture and the ventilation of the powders bed are important parameters for a low temperature reaction [5,6]. Koc and Folmer [5] synthesised titanium carbide from carboncoated titanium oxide, the TiO 2 used consisted of a mixture of anatase and rutile.…”

Section: Introductionmentioning

confidence: 96%

Carbothermic reduction of anatase and rutile

Setoudeh

Saidi

Welham

2005

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 96%

Carbothermic reduction of anatase and rutile

Setoudeh

Saidi

Welham

2005

Journal of Alloys and Compounds

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“…Indeed, the stability domain of the TiCxOy solid solution has already been investigated in the literature and it has been shown that the solid solution was complete between TiC and TiO, [13,14] giving rise to a wide compositional range of TiCxOy compounds. This chemical system was also retained because some of the authors of this publication share a long standing experience in synthesis and characterisation of these compounds [3,15,16]. In the present study, the synthesis of the starting powders was achieved through the carbothermal reduction of TiO2 by carbon black [3].…”

Section: Introductionmentioning

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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“…8,9) It has been recently verified that the carbon particle (grain) size, the homogeneity of the titanium dioxide/carbon mixture and the ventilation of the powder's bed are important parameters for a low-temperature reaction. 10,11) However, the parameters related to the particle characteristics of the starting material of the titanium dioxide, such as the particle (grain) size and phase structure, have been rarely studied exhaustively. In the present study, the focus is on their role in the carbothermal reaction of the titanium dioxide/carbon system.…”

Section: Introductionmentioning

confidence: 99%