A study on the thermal stability of silicon carbide whiskers on growth temperature

Park, W. S.; Joo, Bio; Choi, Doo Jin; Kim, H. D.

doi:10.1007/s10853-005-4516-9

Cited by 9 publications

(8 citation statements)

References 9 publications

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Section: Discussionsupporting

confidence: 76%

“…However, they did not investigate or discuss the origins of the whisker structure and the related crystallographic details. The structure of SiC w produced by vapour deposition was also observed by Park et al (2005). They found numerous stacking faults and micro-twins that were formed for whiskers produced at sufficiently high temperature (1573 K).…”

Section: Discussionmentioning

confidence: 67%

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Microstructure and mechanical properties of AA7039+20%SiC_w composite

Błaż

Kula

Kaneko

et al. 2010

Journal of Microscopy

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Summary Hot deformation tests were performed on an AA7039‐matrix composite reinforced with a 20% addition of SiC whiskers. The flow stress maximum was reduced with deformation temperature from 640 MPa to ∼8 MPa at 293 K and 823 K, respectively. TEM observations, performed on as deformed samples, revealed a highly recovered substructure of the matrix and a striated structure of the whiskers. The fringes, which are perpendicular to the whiskers’ longitudinal axis, were ascribed to nano‐sized twins and stacking faults formed during the crystal growth rather than to some effects of the deformation process.

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Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 67%

Microstructure and mechanical properties of AA7039+20%SiC_w composite

Błaż

Kula

Kaneko

et al. 2010

Journal of Microscopy

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“…On the one hand, processing and densification of composites especially for SiC w reinforced ceramics requires high temperature over 1600°C. Unfortunately, SiC w was observed to be very sensitive to temperature (≥1600°C) and could degrade or even lost their original shape when the temperature is enough high 4,5 . Whitehead et al 6 .…”

Section: Introductionmentioning

confidence: 99%

“…On the one hand, processing and densification of composites especially for SiC w reinforced ceramics requires high temperature over 1600 • C. Unfortunately, SiC w was observed to be very sensitive to temperature (≥1600 • C) and could degrade or even lost their original shape when the temperature is enough high. 4,5 Whitehead et al 6 found that heat treatment period and temperature synergistically affected the morphology of SiC w . Musa et al 7 reported the evolution of SiC w morphology in the ceramic matrix at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Improving thermal stability of SiC whiskers via nanoscale Ti₃SiC₂ coatings

et al. 2022

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Effects of SiC whiskers (SiC w ) on the mechanical properties of composites largely depend on their thermal stability at high temperature. In this study, pure SiC w and Ti 3 SiC 2 coated SiC w were thermal treated at 1600-1800 • C for 1 h. Their phase assemblage, morphology, and structural evolution were investigated. Oxygen partial pressures in the graphite furnace resulted in the breakdown of SiC w into particles at 1600 • C, and the degradation became more pronounced with temperature increasing. The thermal stability of SiC whiskers at 1600-1700 • C was significantly improved by a thin Ti 3 SiC 2 coating on them, as both thermodynamic calculations and experimental observations suggest Ti 3 SiC 2 coating could be preferentially oxidized/decomposed, prior to the active oxidation of SiC. At 1800 • C, the protective role of the coating on the whiskers became weakened. SiC was converted into gaseous SiO and CO, with the remaining of interconnected TiC micro-rods and amorphous carbon.

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“…1 The SiC whisker is useful and promising materials for the reinforcement of various composite materials due to its outstanding mechanical and chemical properties. 2 Many methods, including carbothermal reduction, 3 chemical vapor deposition (CVD), 4 laser ablation, 5 pyrolyzing, 6 and hydrothermal methods 7 have been developed to fabricate the SiC materials. Unfortunately, the common precursor gases (SiCl 4 , CH 3 SiCl 3 ) are toxic, corrosive, flammable, and explosive.…”

Section: Introductionmentioning

confidence: 99%

Preparation of SiC whisker and application in reinforce of polystyrene resin composite materials

Zhang

Liang

et al. 2013

J of Applied Polymer Sci

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A simple approach to fabricate silicon carbide (SiC) whisker is reported via using cellulose nanocrystal (CNC) as templates. The CNC with a length between 2 and 4 lm and a width about 40 nm is prepared by hydrolysis of microcrystalline cellulose (MCC) in strong sulfuric acid condition. The sol-gel reaction of tetraethyl orthosilicate (TEOS) is employed to coat the CNC in the presence of acetic acid as acid catalyst. The SiC whisker is obtained by calcination of CNC/SiO 2 hybrid at 1200 C.

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A study on the thermal stability of silicon carbide whiskers on growth temperature

Cited by 9 publications

References 9 publications

Microstructure and mechanical properties of AA7039+20%SiC_w composite

Microstructure and mechanical properties of AA7039+20%SiC_w composite

Improving thermal stability of SiC whiskers via nanoscale Ti₃SiC₂ coatings

Preparation of SiC whisker and application in reinforce of polystyrene resin composite materials

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A study on the thermal stability of silicon carbide whiskers on growth temperature

Cited by 9 publications

References 9 publications

Microstructure and mechanical properties of AA7039+20%SiCw composite

Microstructure and mechanical properties of AA7039+20%SiCw composite

Improving thermal stability of SiC whiskers via nanoscale Ti3SiC2 coatings

Preparation of SiC whisker and application in reinforce of polystyrene resin composite materials

Contact Info

Product

Resources

About

Microstructure and mechanical properties of AA7039+20%SiC_w composite

Microstructure and mechanical properties of AA7039+20%SiC_w composite

Improving thermal stability of SiC whiskers via nanoscale Ti₃SiC₂ coatings