Development of SiC–Si composites with fine-grained SiC microstructures

Wilhelm, Matthias; Kornfeld, Martin; Wruss, W.

doi:10.1016/s0955-2219(99)00029-1

Cited by 56 publications

(28 citation statements)

References 6 publications

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“…In addition, the striation mark (dotted arrow) along the cleavage plane of the free Si shows that the result is in agreement with the previous studies. 23) Also, as shown in Fig. 6, it can confirm that closed pores are locally distributed in the interior fracture surface of all sintered bodies.…”

Section: Thermal Conductivitysupporting

confidence: 62%

Performance-properties and fabrication of the reaction sintered Si/SiC honeycomb materials for solar absorber application

Han

Seo

Kim

et al. 2014

J. Ceram. Soc. Japan

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Reaction sintered Si/SiC composite was fabricated to apply to a solar absorber and the fabricated material was evaluated on its basic properties and performance. SiC and carbon black were mixed to shape a honeycomb with a multi-channel via vacuum extrusion process. The Si/SiC honeycomb material was also fabricated with less than 5% of pores by molten silicon infiltration in vacuum. The sintered density and porosity of the fabricated material, and the 3-point bending strength at room temperature and high temperature (11001300°C) were measured and the thermal conductivity at room temperature and 1100°C were also analyzed. In addition, the fabricated honeycomb material was modulized and installed to a solar absorber system to measure the outlet air temperature and thermal efficiency and evaluate the performance of honeycomb material as a solar absorber material.

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Section: Thermal Conductivitysupporting

confidence: 62%

Performance-properties and fabrication of the reaction sintered Si/SiC honeycomb materials for solar absorber application

Han

Seo

Kim

et al. 2014

J. Ceram. Soc. Japan

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“…10. However, a survey of published data [20][21][22]25,[46][47][48] reveals that there is a limiting value of silicon content up to which fracture toughness increases, as shown in Fig. 11 along with the data generated in this study.…”

Section: Discussionmentioning

confidence: 52%

“…The inclusion of glassy [1] or metallic [19] secondary phases has been shown to decrease the brittleness and increase the fracture toughness value of ceramics. Newer processing techniques, such as reaction bonding, have been used to manufacture ceramics with increased fracture toughness while minimally compromising other material properties, such as density and hardness, compared to similar sintered ceramics [20][21][22][23][24][25]. In this study, a variety of reaction-bonded ceramic composites are compared to several pressureless-sintered ceramics to investigate the effect of microstructure on the fracture toughness value.…”

Section: Introductionmentioning

confidence: 99%

The rate-dependent fracture toughness of silicon carbide- and boron carbide-based ceramics

Pittari

Subhash

Zheng

et al. 2015

Journal of the European Ceramic Society

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“…This formation is exothermic. 18), 19) However, it is considered that some pores are not fully closed due to a fast growth of ¢-SiC, and the remained pores which are partially, could be filled by the excess Si. Namely, the pores of the green compacts are filled up with liquid Si so that after Si infiltration a practically dense specimen is obtained as shown in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Influence of uni and bi-modal SiC composition on mechanical properties and microstructure of reaction-bonded SiC ceramics

Jang

Kim

Han

et al. 2010

J. Ceram. Soc. Japan

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Influence of SiC composition with different particle size on mechanical properties and microstructure of reaction-bonded SiC have been investigated using infiltration process of liquid Si. SiC specimens were prepared by reaction-bonding sintering at 1620°C in vacuum using different SiCC composition. Reaction-bonded SiC specimens show dense with 3.03.05 gr/cm 3 of density. SiC specimens with bi-modal SiC composition show a fine microstructure than those of uni-modal SiC composition. In addition, in the specimens with bi-modal SiC composition, the microstructure of the sample with use of fine SiC starting powders is finer rather than those of use of relatively coarse SiC starting powders. The flexural strength and fracture toughness of specimens with bi-modal SiC composition are higher than those of uni-modal SiC composition. The main fracture mode of specimens with a high strength is intergranular fracture.

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Development of SiC–Si composites with fine-grained SiC microstructures

Cited by 56 publications

References 6 publications

Performance-properties and fabrication of the reaction sintered Si/SiC honeycomb materials for solar absorber application

Performance-properties and fabrication of the reaction sintered Si/SiC honeycomb materials for solar absorber application

The rate-dependent fracture toughness of silicon carbide- and boron carbide-based ceramics

Influence of uni and bi-modal SiC composition on mechanical properties and microstructure of reaction-bonded SiC ceramics

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