Preparation of TiC/Ti₂AlC coating on carbon fiber and investigation of the oxidation resistance properties

Abstract

MAX phases were proposed as the interphase materials for carbon fiber reinforced ceramic matrix composites toward the applications in high‐dose irradiation and oxidation environments. A thickness‐controllable TiC/Ti2AlC coating was fabricated on carbon fiber using an in situ reaction in a molten salt bath. The coating showed a multilayered structure, in which the inner layer was TiC and the outer layer was Ti2AlC. The influence of the reaction conditions on the morphology, composition, and thickness of the coating was investigated. The oxidation resistance properties of the as‐prepared TiC/Ti2AlC‐coated carbon fiber in static air and water vapor flow at elevated temperatures were investigated. The results showed that the as‐prepared TiC/Ti2AlC coating could provide good protection to the carbon fiber in both static air and water vapor flow up to 800°C. As these TiC and Ti2AlC materials have good irradiation resistance, the present work provides a potential way to develop an irradiation‐resistant interphase of carbon‐fiber‐reinforced ceramic matrix composites for nuclear applications. Furthermore, this work also provides a feasible way to prepare carbide/MAX phase coating on other carbon materials.

WITHDRAWN: SiC/nano α-Al2O3 Double-Layer Coating on Graphite Component via Pack Cementation and Electrophoretic Deposition

“…A wide variety of coatings are used as conventional techniques for the preservation of carbon products against oxidation, such as SiC [2], TiC [3], TiN [4], Si 3 N 4 [5], B 4 C [6], SiO 2 [7], ZrSiO 4 [8], ZrO 2 [9], HfC-ZrC-SiC [10], Al 2 O 3 [11], mullite [12], hexagonal-BN [13], LaB 6 -MoSi 2 -ZrB 2 [14], MoSi 2 -SiC [15], ZrB 2 -ZrC-SiC [16] and ZrB 2 [17].…”

Near-seamless joining of Cf/SiC composites using Y3Si2C2 via electric field-assisted sintering technique

“…The similar mechanism has also been reported for the formation of MAX phases via the molten salt method [38,41]. The surface energy of the reactants can be significantly improved by the polarization effect of the molten salt, which can decline the potential barrier of the formation of Y 3 Si 2 C 2 .…”

Element Replacement Approach by Reaction with Lewis Acidic Molten Salts to Synthesize Nanolaminated MAX Phases and MXenes

“…The Ti 3 AlC 2 , Ti 2 AlC, Ti 2 AlN, and V 2 AlC MAX phase precursors were powders prepared by a molten-salt method as reported previously. ,, Metal carbide/nitride powders (TiC, TiN, and VC), M-site metal powders (Ti and V), and A-site metal powders (Al) were used as the source for synthesizing the target MAX phases. NaCl and KCl with the molar ratio of 1:1 was used as the source for the molten salt bath.…”