Physico-chemistry of interfaces in inorganic-matrix composites

Bouix, J.; Berthet, Marie-Paule; Bosselet, F.; Favre, R.; Peronnet, M.; Rapaud, Olivier; Viala, J.C.; Vincent, C.; Vincent, H.

doi:10.1016/s0266-3538(00)00107-x

Cited by 23 publications

(11 citation statements)

References 11 publications

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“…To explore the full potential of carbon fibres as reinforcements for desired composites, it is necessary to have an adequate fibre-matrix interface to ensure effective load transfer from the matrix to the fibre [1,2]. However, carbon fibres are chemically inert in nature and therefore have poor wettability and adsorption with most matrices.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of a Fibre-Matrix Interface: A Novel Method Using Nanoparticles

Tiwari

Bijwe

Panier

2013

Nanomaterials and Nanotechnology

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The surface of carbon fabric (CF) was treated with nanoparticles (NPs) of Ytterbium fluoride (YbF3) (40-80nm size) in various amounts (0, 0.1, 0.3 and 0.5wt%) to improve its wettability with a Polyetherimide (PEI) matrix. The effect of treatment on the fibres of the CF was also studied by adhesion testing and fibre tow tension testing. An improvement in wettability with PEI and a slight reduction in the tensile strength of the CF was observed in these tests. Fourier transform infrared-attenuated total reflectance spectroscopy (FTIR-ATR) indicated the addition of functional groups on the fabric after treatment. MicroRaman spectroscopy (MRS) showed a slight distortion in the structure of the CF due to the treatment. Increased roughness of the fibre surface and adhesion of NPs on the fibre surface were observed by field emission scanning electron microscopy (FESEM). Composites were developed based on untreated and surface-treated CFs by impregnation techniques. The composites were analysed for interlaminar shear strength (ILSS) and a maximum improvement of 61% was observed for the 0.3% concentration of YbF3, followed by a slight decline in ILSS, indicating that it was the optimum dose.

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Section: Introductionmentioning

confidence: 99%

Strengthening of a Fibre-Matrix Interface: A Novel Method Using Nanoparticles

Tiwari

Bijwe

Panier

2013

Nanomaterials and Nanotechnology

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“…RCVI is similar to reactive chemical vapour deposition (RCVD) but transferred to the infiltration and consolidation of porous media. In RCVD, the MC carbide coating is obtained by reacting a carbon-bearing substrate with the gas, which carries only the M element (being B, Hf, Ta, Si, Ti…) but not the C element like in classical CVD [6] [7] [8] [9] [10] [11]. Once the substrate surface in covered with a continuous film of carbide, the continuation of the growth involves carbon diffusion from the substrate to the surface through the growing carbide film.…”

Section: Introductionmentioning

confidence: 99%

Consolidation and conversion of carbon powders into TiC by reactive chemical vapour infiltration

Ledain

Jacques

Maillé

2016

Journal of the European Ceramic Society

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International audienceCeramic samples were prepared using a hybrid process in which the ceramic powder route was combined with Reactive Chemical Vapour Infiltration, a new gas phase route. In this technique, a carbide growth occurs from the conversion of a carbon-bearing powder and slows down with increase in carbide thickness due to solid-state diffusion limitation. This self-limitation is expected to allow a self-regulation of the growth between the interior and the surface of the sample and thus a better homogeneity. The chosen carbide was TiC obtained by reacting H2 and TiCl4 with a carbon powder introduced by slurry impregnation in felts. At 950°C, the carbide infiltration is homogeneous with depth but the powder is not consolidated, while at 1050°C the better conversion rate of carbon into carbide allows the consolidation but the infiltration is limited to only about 250 µm. The consolidation depth can be improved with time-temperature steps between both temperatures

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“…A way to process (PyC-carbide) n nanoscale multilayered coatings with PyC sub-layers as thin as a few nanometers on fibers in preforms is the use of pressure-Pulsed Chemical Vapor Deposition or Infiltration (P-CVD/CVI), a method adapted from CVD [3] [13] [14]. Another way is the use of pressure-Pulsed Reactive CVD or CVI (P-RCVD/RCVI) adapted from the RCVD method in which a part of the elements of the deposited coating comes from the substrate [15] [16]. The basic RCVD method was successfully applied by Bouix et al [15] [17] [18] and Baklanova et al [19] [20] [21] to coat carbon and SiC-based fibers with thin various carbide films for high temperature oxidation protection.…”

Section: Introductionmentioning

confidence: 99%

“…Another way is the use of pressure-Pulsed Reactive CVD or CVI (P-RCVD/RCVI) adapted from the RCVD method in which a part of the elements of the deposited coating comes from the substrate [15] [16]. The basic RCVD method was successfully applied by Bouix et al [15] [17] [18] and Baklanova et al [19] [20] [21] to coat carbon and SiC-based fibers with thin various carbide films for high temperature oxidation protection. If P-RCVD has demonstrated its interest in the design of (PyC-TiC) n interphases, a first attempt to get a good mechanical fuse only made of pure carbide by total removing of PyC during the carbide growth was unsuccessful [22].…”

Section: Introductionmentioning

confidence: 99%

Nanoscale multilayered and porous carbide interphases prepared by pressure-pulsed reactive chemical vapor deposition for ceramic matrix composites

Jacques¹,

Jouanny²,

Ledain³

et al. 2013

Applied Surface Science

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International audienceIn Ceramic Matrix Composites (CMCs) reinforced by continuous fibers, a good toughness is achieved by adding a thin film called "interphase" between the fiber and the brittle matrix, which acts as a mechanical fuse by deflecting the matrix cracks. Pyrocarbon (PyC), with or without carbide sub-layers, is typically the material of choice to fulfill this role. The aim of this work was to study PyC-free nanoscale multilayered carbide coatings as interphases for CMCs.Nanoscale multilayered (SiC-TiC)n interphases were deposited by pressure-Pulsed Chemical Vapor Deposition (P-CVD) on single filament Hi-Nicalon fibers and embedded in a SiC matrix sheath. The thicknesses of the carbide interphase sub-layers could be made as low as a few nanometers as evidenced by scanning and transmission electron microscopy. By using the P-ReactiveCVD method (P-RCVD), in which the TiC growth involves consumption of SiC, it was not only possible to obtain multilayered (SiC-TiC) n films but also TiC films with a porous multilayered microstructure as a result of the Kirkendall effect. The porosity in the TiC sequences was found to be enhanced when some PyC was added to SiC prior to total RCVD consumption. Because the porosity volume fraction was still not high enough, the role of mechanical fuse of the interphases could not be evidenced from the tensile curves, which remained fully linear even when chemical attack of the fiber surface was avoided

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Physico-chemistry of interfaces in inorganic-matrix composites

Cited by 23 publications

References 11 publications

Strengthening of a Fibre-Matrix Interface: A Novel Method Using Nanoparticles

Strengthening of a Fibre-Matrix Interface: A Novel Method Using Nanoparticles

Consolidation and conversion of carbon powders into TiC by reactive chemical vapour infiltration

Nanoscale multilayered and porous carbide interphases prepared by pressure-pulsed reactive chemical vapor deposition for ceramic matrix composites

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