Voids formation in TMC processed by fibre coating

Dudek, H.J.; Weber, K.

doi:10.1016/s1359-835x(02)00187-2

Cited by 5 publications

(5 citation statements)

References 4 publications

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“…On the other hand, in zones near the upper surface, fiber damage is always produced by elevated pressure as previously shown [11]. Fissures can be produced both in the carbon protective coating and the fiber core, as has been previously shown and discussed [2,7,14]. If a pressure of 100 MPa is applied during densification, the fibers are not bent or broken.…”

Section: Resultsmentioning

confidence: 74%

“…In this case, the voids formation can be explained based on difference in thermal expansion produced between matrix and TiC phases. In agreements with this, Dudek et al [2] explained the voids formation (porosity in reaction zone) based on the volume contraction produced by chemical reaction on the interfacial zones.…”

Section: Resultsmentioning

confidence: 76%

“…Choo et al [16] showed that in the transverse direction particularly, the matrix and the fiber expand independently over the whole temperature range, indicating that the thermal load is not shared. Dudek et al [2] explained the void formation (porosity in reaction zone) based only on the volume contraction produced by chemical reaction on the interfacial zones. In our manufacturing conditions, the porosity cannot be attributed to volume contraction (chemical reaction) or differences in thermal expansion.…”

Section: Resultsmentioning

confidence: 99%

“…For all of these fabrication routes, hot pressing and diffusion bonding are necessaries for matrix consolidation, such as summarized by Ward-Close et al [1]. The reinforcement is always silicon carbide (SiC/C) monofilament [2][3] with a carbon protective coating, despite of its high chemical reactivity in titanium matrix [4][5][6][7]. Three types of filaments are commercially produced: Textron SCS (140 µm diameter), Sigma DERA (100 µm diameter) and Trimarc (140 µm diameter).…”

Section: Introductionmentioning

confidence: 99%

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Continuous Binder-Powder Coating for the Production of Ti/SiC/C Composites

Ferreira

Yadava

Arvieu

et al. 2006

MSF

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Continuous Binder-Powder Coating (CBPC) is a new fabrication route for the titanium metal matrix composites reinforced with continuous SiC filaments. Based on powder-cloth process, this alternative fabrication route is characterised, analysed and application viability is discussed considering the other related routes. In addition, effects of the pressure and temperature on the Ti/SiC/C composites were considered for matrix consolidation. Results have shown that the titanium matrix composites processed by Continuous Binder-Powder Coating present, simultaneously, good matrix densification, consolidation and also a weak interaction between matrix and fibers, when the hot pressing is performed under 150 MPa at temperature below β-transus. Most important characteristics of the CBPC process and its application viability are reported, in this paper.

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Section: Resultsmentioning

confidence: 74%

Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Continuous Binder-Powder Coating for the Production of Ti/SiC/C Composites

Ferreira

Yadava

Arvieu

et al. 2006

MSF

View full text Add to dashboard Cite

show abstract

“…Choo et al 3 show that in transverse direction, particularly, the matrix and the fiber expand independently over the whole temperature range, indicating that the thermal load is not shared. Dudek et al 17 explain the voids formation (porosity in reaction zone) based only on the volume contraction produced by chemical reaction on the interfacial zones. In our manufacturing conditions, the porosity cannot be attributed to volume contraction (chemical reaction) or differences in thermal expansion.…”

Section: Resultsmentioning

confidence: 99%

Matrix consolidation mechanism in 1D-Ti/SiC/C composites produced by continuous binder-powder coating

et al. 2013

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In this work matrix consolidation mechanism has been investigated in 1D-Ti/SiC/C composites produced by Continuous Binder-Powder Coating -CBPC. Titanium metal matrix composites reinforced with continuous SiC/C filaments were analysed in different densification conditions. The results show that during processing, densification occurs by several mechanisms including a complex elasto-viscoplastic flow and diffusion bonding. The matrix consolidation depends on many processing conditions such as pressure and temperature, mainly. Using correct conditions of pressure and temperature, the titanium matrix composites produced by this process present a good matrix consolidation without porosity and a weak interaction between matrix and fiber. These good agreements between matrix consolidation and weak chemical interaction between matrix and fibre are obtained when pressures up to 150 MPa and temperatures below β-transus are applied. In these conditions, supplementary heat treatments can be performed either in alpha or beta domains.

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