Thermal stress resistance and heat-induced damage of silicon carbide materials for laser mirrors

Babayants, G. I.; Lanin, A. G.

doi:10.1016/s0955-2219(00)00017-0

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…At the MWNTs fraction of 1.5 wt%, the agglomerations of MWNTs are siliconized by the liquid silicon due to the increase of porosity and defects. Also, the bulk density declines to 2.6 g/cm 3 .…”

Section: Discussionmentioning

confidence: 96%

“…The main advantages of the RBSC are: (a) low sintering temperature as compared to pressure-less or hot pressing densification; (b) short sintering time; (c) full densification; (d) near-net shaping compared with the conventional sintered SiC. Additionally, in the view of the low coefficient of thermal expansion (CTE) and high thermal conductivity, the RBSC is believed to be a promising candidate for the large scale, complex shaped and ultra-light weight structural components [3,4]. However, due to the presence of the residual silicon the mechanical properties, such as flexural strength, Young's modulus, fracture toughness and hardness, were lower than normal sintered SiC.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and Characterization of SiC-Coated Multi-Walled Carbon Nanotubes Reinforced Reaction Bonded SiC Composite

Song

Liu

Yuan

et al. 2014

AMR

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SiC-coated multi-walled carbon nanotubes (SiC-coated MWNTs) made by RF magnetron sputtering were introduced into the SiC suspensions to enhance the mechanical behaviors of reaction bonded silicon carbide ceramics. The composites were prepared by the epoxy resin curing and liquid silicon infiltration at 1550°Cfor 60min. The distribution, morphology, and reinforcing behaviors of MWNTs were investigated. X-ray diffraction (XRD) reveals that the MWNTs were reserved during the reaction sintering. The flexural strength and fracture toughness increase with MWNTs ranging from 0wt% to 0.5wt%, reaching the peaks value of 347MPa and 4.3MPam1/2 respectively at the MWNTs fraction of 0.5 wt%. This improvement derives from the MWNTs pullout. The consequent decline at MWNTs fraction of 1wt% is resulted from the corrosion of agglomerated MWNTs and the increase of residual silicon.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of SiC-Coated Multi-Walled Carbon Nanotubes Reinforced Reaction Bonded SiC Composite

Song

Liu

Yuan

et al. 2014

AMR

View full text Add to dashboard Cite

show abstract

“…This interest is based on the extraordinary properties of SiC, which predominantly are high hardness, oxidation resistance, and shock resistance as well as good strength. [1][2][3][4][5][6] Recently, the liquid phase sintering of SiC was developed. [7][8][9] Metal oxide with the SiO 2 as a main impurity of SiC powder create the liquid at the sintering temperature of SiC and enhance densification process similarly to those known for Si 3 N 4 ceramics.…”

Section: Introductionmentioning

confidence: 99%