scholarly journals Temperature Dependence of Fracture Strength and Fracture Toughness of Sintered Silicon Carbide.

1995 ◽  
Vol 44 (501) ◽  
pp. 755-761
Author(s):  
Tsuneshichi TANAKA ◽  
Hideaki NAKAYAMA ◽  
Takashi IMAMICHI
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Temperature Dependence ◽  
Fracture Strength ◽  
Sintered Silicon

scholarly journals Effects of Vickers indented load and microstructure of bending strength and fracture toughness in normal-sintered silicon carbide.

1990 ◽  
Vol 56 (523) ◽  
pp. 488-493 ◽  
Author(s):  
Yasuo OCHI ◽  
Akira ISHII ◽  
Shigemi K SASAKI ◽  
Sunao KURAKAZU ◽  
Makoto KAWAI
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Bending Strength ◽  
Sintered Silicon

Fracture toughness of pressureless sintered silicon carbide: A comparison of Klc measurement methods

1987 ◽  
Vol 13 (3) ◽  
pp. 159-165 ◽  
Author(s):  
Gilles Orange ◽  
Hidehiko Tanaka ◽  
Gilbert Fantozzi
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Measurement Methods ◽  
Sintered Silicon

Importance of chemistry in high-tech ceramics design

2002 ◽  
Vol 74 (11) ◽  
pp. 2137-2144 ◽  
Author(s):  
P. Šajgalík
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Silicon Nitride ◽  
Liquid Phase ◽  
Grain Boundary ◽  
Ceramic Materials ◽  
High Tech ◽  
Polycrystalline Ceramics ◽  
Sintered Silicon

This paper deals with the role of chemistry in the design of high-tech ceramic materials. Grain boundary composition of polycrystalline ceramics dictates the hardness fracture toughness and creep resistance of liquid-phase sintered silicon nitride and silicon carbide materials.

Processing and Mechanical Properties of SiC-Metal Interpenetrating Composites

1995 ◽  
Vol 410 ◽  
Author(s):  
Leszek Hozer ◽  
Yet-Ming Chiang ◽  
Svetlana Ivanova ◽  
Isa Bar-On
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Silicon Carbide ◽  
Fracture Strength ◽  
Exchange Process ◽  
Secondary Phase ◽  
Single Edge ◽  
Ductile Metal ◽  
Silicon Carbides ◽  
Beam Technique

ABSTRACTIn this paper we demonstrate a liquid exchange process to introduce a ductile metal reinforcement phase in the amount of 10–30 vol. % into reaction-bonded silicon carbides (RBSCs). Immersion of RBSC in pure Al or Al-Si melts enables diffusional replacement of secondary phase silicon with metal. The Al and Al-Si exchanged composites show improvement in fracture toughness (single edge precracked beam technique) to 6–7 MPa·m1/2 as compared to 3–4 MPa·m1/2 in otherwise similar siliconized silicon carbide. Increased fracture strength (four point flexure) was also observed after the liquid exchange process.

scholarly journals Temperature Dependence of the Fracture Toughness JC of Random Fibrous Material

2020 ◽  
Vol 10 (3) ◽  
pp. 941
Author(s):  
Datao Li ◽  
Yan Li ◽  
Wenshan Yu
Keyword(s):  
Fracture Toughness ◽  
Temperature Dependence ◽  
Fracture Strength ◽  
Elevated Temperatures ◽  
Three Dimensional ◽  
Compact Tension ◽  
Fe Model ◽  
The Finite Element Method ◽  
Silica Fibers ◽  
Different Temperatures

The temperature dependence of the fracture toughness JC of a three-dimensional (3D) random fibrous (RF) material, with a porosity of 87% along the through-the-thickness (TTT) direction, was investigated using experiments and the finite element method (FEM) in this study. The temperature considered ranges from 299 to 1273 K. The experimental observations revealed the fracture toughness JC with crack length-to-width ratios of 0.4 and 0.5, which increased from 47.32 to 328.28 J/m2 and from 44.92 to 280.09 J/m2, respectively, as the temperature increased. Then, a 3D FE model, considering the meso-morphology characteristics of the 3D RF material, was developed to simulate a size-scaled compact tension (CT) specimen with a single edge crack. Using the elastic modulus and the fracture strength of the silica fibers at room temperature, we verified the effectiveness of the FE model, then predicted the fracture strength of the silica fibers and the bonding between the fibers at elevated temperatures. In addition, our developed FE model proved to successfully simulate the fracture toughness JC from 299 to 1273 K and reveal the deformation mechanism of the 3D RF material at different temperatures.

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