Synthesis of Ti3SiC2 coatings onto SiC monoliths from molten salts

B. Chahhou; C. Labrugère-Sarroste; F. Ibalot; J. Danet; J. Roger

doi:10.1016/j.jeurceramsoc.2022.05.054

Synthesis of Ti₃SiC₂ coatings onto SiC monoliths from molten salts

B. Chahhou, C. Labrugère-Sarroste, F. Ibalot, J. Danet, J. Roger

Energy Storage and Conversion Manufactur

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Coatings with composition close to Ti₃SiC₂ were obtained on SiC substrates from Ti and Si powders with the molten NaCl method. In this work, the growth of coatings by reaction in the salt between monolithic SiC substrates and titanium powder is obtained between 1000 and 1200 °C. At 1000 °C, a coating of 8 µm thickness is formed in 10 h whereas a thin coating of 0.5 µm has been grown in 2 h. A lack in silicon was first found in the coatings prepared at 1100 and 1200 °C. For these temperatures, the addition of silicon powder in the melt had a favorable effect on the final composition, which is found very close to the composition of Ti₃SiC₂. The reaction mechanism implies the formation of TiC_x layers in direct contact with the SiC substrate and the presence of more or less important quantities of Ti₃SiC₂ and Ti₅Si₃C_x in the upper layers.

Original language	English
Pages (from-to)	5484-5492
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	42
Issue number	13
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2022.05.054
State	Published - Oct 2022

Funding

Special thanks to the R\u00E9gion Nouvelle-Aquitaine and the Minist\u00E8re de l\u2032Enseignement Sup\u00E9rieur et de la Recherche for funding this research. The authors wish to thank Muriel Alrivie from the Laboratory of ThermoStructural Composites (LCTS - UMR 5801 - UB-CNRS-CEA-SAFRAN) and Arnaud Proietti from the Centre de microcaract\u00E9risation Raimond Castaing (UMS 3623) for their kind assistance. Special thanks to the R\u00E9gion Nouvelle-Aquitaine and the Minist\u00E8re de l\u2032Enseignement Sup\u00E9rieur et de la Recherche for funding this research.

Keywords

Coating
Molten salt
Silicon carbide
Synthesis
TiSiC

Access to Document

10.1016/j.jeurceramsoc.2022.05.054

Cite this

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title = "Synthesis of Ti3SiC2 coatings onto SiC monoliths from molten salts",

abstract = "Coatings with composition close to Ti3SiC2 were obtained on SiC substrates from Ti and Si powders with the molten NaCl method. In this work, the growth of coatings by reaction in the salt between monolithic SiC substrates and titanium powder is obtained between 1000 and 1200 °C. At 1000 °C, a coating of 8 µm thickness is formed in 10 h whereas a thin coating of 0.5 µm has been grown in 2 h. A lack in silicon was first found in the coatings prepared at 1100 and 1200 °C. For these temperatures, the addition of silicon powder in the melt had a favorable effect on the final composition, which is found very close to the composition of Ti3SiC2. The reaction mechanism implies the formation of TiCx layers in direct contact with the SiC substrate and the presence of more or less important quantities of Ti3SiC2 and Ti5Si3Cx in the upper layers.",

keywords = "Coating, Molten salt, Silicon carbide, Synthesis, TiSiC",

author = "B. Chahhou and C. Labrug{\`e}re-Sarroste and F. Ibalot and J. Danet and J. Roger",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

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doi = "10.1016/j.jeurceramsoc.2022.05.054",

language = "English",

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TY - JOUR

T1 - Synthesis of Ti3SiC2 coatings onto SiC monoliths from molten salts

AU - Chahhou, B.

AU - Labrugère-Sarroste, C.

AU - Ibalot, F.

AU - Danet, J.

AU - Roger, J.

PY - 2022/10

Y1 - 2022/10

N2 - Coatings with composition close to Ti3SiC2 were obtained on SiC substrates from Ti and Si powders with the molten NaCl method. In this work, the growth of coatings by reaction in the salt between monolithic SiC substrates and titanium powder is obtained between 1000 and 1200 °C. At 1000 °C, a coating of 8 µm thickness is formed in 10 h whereas a thin coating of 0.5 µm has been grown in 2 h. A lack in silicon was first found in the coatings prepared at 1100 and 1200 °C. For these temperatures, the addition of silicon powder in the melt had a favorable effect on the final composition, which is found very close to the composition of Ti3SiC2. The reaction mechanism implies the formation of TiCx layers in direct contact with the SiC substrate and the presence of more or less important quantities of Ti3SiC2 and Ti5Si3Cx in the upper layers.

AB - Coatings with composition close to Ti3SiC2 were obtained on SiC substrates from Ti and Si powders with the molten NaCl method. In this work, the growth of coatings by reaction in the salt between monolithic SiC substrates and titanium powder is obtained between 1000 and 1200 °C. At 1000 °C, a coating of 8 µm thickness is formed in 10 h whereas a thin coating of 0.5 µm has been grown in 2 h. A lack in silicon was first found in the coatings prepared at 1100 and 1200 °C. For these temperatures, the addition of silicon powder in the melt had a favorable effect on the final composition, which is found very close to the composition of Ti3SiC2. The reaction mechanism implies the formation of TiCx layers in direct contact with the SiC substrate and the presence of more or less important quantities of Ti3SiC2 and Ti5Si3Cx in the upper layers.

KW - Coating

KW - Molten salt

KW - Silicon carbide

KW - Synthesis

KW - TiSiC

UR - https://www.scopus.com/pages/publications/85131564145

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