Pressureless sintering of multilayer graphene reinforced silicon carbide ceramics for mechanical seals

The Si¬2ON2-SiC ceramic was fabricated by pressureless sintering method. In this paper we researched the effect of SiC content (50%, 70% and 90%) on the performance of silicon oxynitride bonded silicon carbide ceramics. Through testing and analyzing the SEM, XRD, density and porosity of the final silicon oxynitride bonded silicon carbide ceramic samples, the results show that: changes in SiC content not only affect the bulk density of the composites but also affect the phase composition and the microstructure of fracture surface. The most compactness experimental product is sintered at1500°C containing 50wt% SiC.

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Silicon carbide ceramics through temperature-induced gelation and pressureless sintering

Materials Science and Engineering A ◽

10.1016/j.msea.2004.05.009 ◽

2004 ◽

Vol 382 (1-2) ◽

pp. 335-340 ◽

Cited By ~ 7

Author(s):

X. Xu ◽

S. Mei ◽

J.M.F. Ferreira ◽

T. Nishimura ◽

N. Hirosaki

Keyword(s):

Silicon Carbide ◽

Pressureless Sintering ◽

Carbide Ceramics ◽

Silicon Carbide Ceramics

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Pressureless Sintering of Hafnium Carbide-Silicon Carbide Ceramics

Journal of the American Ceramic Society ◽

10.1111/jace.12339 ◽

2013 ◽

Vol 96 (6) ◽

pp. 1751-1756 ◽

Cited By ~ 27

Author(s):

Ji-Xuan Liu ◽

Xiao Huang ◽

Guo-Jun Zhang

Keyword(s):

Silicon Carbide ◽

Pressureless Sintering ◽

Hafnium Carbide ◽

Carbide Ceramics ◽

Silicon Carbide Ceramics

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Mechanical Property and Ballistic Performance of Silicon Carbide

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.434-435.72 ◽

2010 ◽

Vol 434-435 ◽

pp. 72-75 ◽

Cited By ~ 2

Author(s):

Tian Ma ◽

Heng Du ◽

Zi Li Yan ◽

Zheng Cao Li ◽

Jian Chun Zhang

Keyword(s):

Silicon Carbide ◽

Flexural Strength ◽

Mechanical Performance ◽

The Other ◽

Pressureless Sintering ◽

Stoichiometric Ratio ◽

Ballistic Performance ◽

The Difference ◽

Carbide Ceramics ◽

Silicon Carbide Ceramics

Two groups of silicon carbide ceramics were prepared by pressureless sintering processing with a small amount of boron and carbon as sintering additives. The flexural strength, Vickers hardness, fracture toughness and compressive strength of the samples were measured and compared. Sample A achieved much higher flexural strength (389.4MPa) than that of sample B (250.3MPa) due to the difference of additive dosage. However, the two groups of samples attained comparable values for the other three mechanical properties. SEM observation revealed that the stoichiometric ratio of the Si/C atom in the sintered body is an important factor to affect the mechanical performance of the silicon carbide. The ballistic performance of the samples was also evaluated in this study. The results showed that sample B exhibited more excellent ballistic property, which is probably related to the high flexural strength. The detailed influencing factors need to be studied further.

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