Rapid fabrication of porous Si3N4/SiC ceramics via nitridation of silicon powder with ZrO2 as catalyst

Hu, Hailong; Zeng, Yu‐Ping; Xia, Yongfeng; Yao, Dongxu; Zuo, Kaihui; Günster, Jens; Heinrich, Jürgen G.

doi:10.1016/j.ceramint.2013.11.098

Cited by 20 publications

(2 citation statements)

References 22 publications

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“…As SF ratios increased from 0% to 15% and NS ratios increased from 0% to 4%, FC compressive strength at 7 and 28 days gradually increased. FC compressive strength at 7 and 28 days reached its highest level of 21.7 MPa and 32.8 MPa when SF was 15% whereas it was 24.9 MPa and 35.8 MPa when 4% NS was [30]. However, at 4% NS, FC compressive strength at 7 and 28 days was 14.7% and 9.1% higher than 15% SF.…”

Section: Compressive Strengthmentioning

confidence: 83%

Silica Fume and Nanosilica Effects on Mechanical and Shrinkage Properties of Foam Concrete for Structural Application

Gong

Zhu

et al. 2020

Advances in Materials Science and Engineering

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Adding the appropriate amount of silica fume (SF) or nanosilica (NS) can improve the strength and reduce the shrinkage of foam concrete (FC), thereby widening its application. This paper reports on a study of FC mechanical and shrinkage properties when varying SF and NS proportions were used to replace cement. Scanning electron microscopy (SEM) and nonmetallic ultrasonic detection were employed to investigate the mechanism of strength changes. The result showed that when the SF and NS content was 15% and 4%, in the 28 days, the compressive strength of FC peaked at 32.8 MPa and 35.8 MPa, and the flexural strength maximized at 7.9 MPa and 9.1 MPa, respectively. The autogenous shrinkage reached the minimum value, separately, i.e., 741.2 × 10−6 and 797.1 × 10−6. The dry shrinkage value was the highest (862.5 × 10−6 and 1387.5 × 10−6). The results indicated that the compressive and flexural strength of FC first increased and then decreased as SF and NS content increased. Autogenous shrinkage first decreased and then increased with the increase of SF or NS content. An opposite trend of dry shrinkage could be observed. FC made with NS had higher shrinkage than it did with SF. The results also indicated that there was a correlation between microstructure and sound velocity in the presence of SF or NS.

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Section: Compressive Strengthmentioning

confidence: 83%

Silica Fume and Nanosilica Effects on Mechanical and Shrinkage Properties of Foam Concrete for Structural Application

Gong

Zhu

et al. 2020

Advances in Materials Science and Engineering

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“…There are several publications investigating different behaviors of Si 3 N 4 ceramics in engineering [4][5][6][7][8]. Some theoretical discussions on ceramics processing are presented in papers [9][10][11][12][13][14][15][16][17][18][19][20][21]. Analysis of surface roughness is shown in papers The purpose of this investigation is to study the thermal stresses arising in Si 3 N 4 ceramics in the laser processing.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Thermal Stresses in Surface Layer of Si<sub>3</sub>N<sub>4</sub> Ceramics in Laser Processing

Kuzin

Fedorov

Dašić³

et al. 2015

AMM

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The laser processing has the ability for effective machining of ceramic materials because of high energy beam acting on a very small area. The stress-strain state of surface layer of Si3N4 ceramics in laser processing was investigated with the use of finite element method to compute the temperature and stress fields. The effect of heat flow on thermal stresses was discussed in terms of the results of the numerical experiment.

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Inorganic Membranes in Water and Wastewater Treatment

Chen

Chou

et al. 2017

Green Chemistry and Sustainable Technology

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Rapid fabrication of porous Si3N4/SiC ceramics via nitridation of silicon powder with ZrO2 as catalyst

Cited by 20 publications

References 22 publications

Silica Fume and Nanosilica Effects on Mechanical and Shrinkage Properties of Foam Concrete for Structural Application

Silica Fume and Nanosilica Effects on Mechanical and Shrinkage Properties of Foam Concrete for Structural Application

Numerical Investigation of Thermal Stresses in Surface Layer of Si<sub>3</sub>N<sub>4</sub> Ceramics in Laser Processing

Inorganic Membranes in Water and Wastewater Treatment

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