Flexural silicon carbide

Properties of Dense Silicon Carbide. Properties of the SiC stmctural ceramics are shown in Table 1. These properties are for representative materials. Variations can exist within a given form depending on the manufacturer. Figure 2 shows the flexure strength of the SiC as a function of temperature. Sintered or sinter/HIP SiC is the preferred material for appHcations at temperatures over 1400°C and the Hquid-phase densified materials show best performance at low temperatures. The reaction-bonded form is utilized primarily for its ease of manufacture and not for superior mechanical properties. 

Flexural modulus, 10 177, 223, 224 of filled polymers, 11 303 Flexure strength, of silicon carbide, 22 528t FLExX, 6 13 FlexX method, 10 337 Flicker noise, silicon-based semiconductors and, 22 237 Flint, 5 640 22 480... 

Baskaran, S., and Halloran, J.W. (1993), Fibrous monolithic ceramics II, Flexural strength and fracture behavior of the silicon carbide/graphite system , J. Am. Ceram. Soc., 76(9) 2217-2224. 

Blissett, M.J., Smith, P. A., Yeomans, J.A. (1997), Thermal shock behaviour of unidirectional silicon carbide fibre reinforced calcium aluminosilicate , J. Mater. Sci., 32, 317-325. Blissett, M.J., Smith, P.A., Yeomans, J.A. (1998), Flexural mechanical properties of thermally treated unidirectional and cross-ply Nicalon-reinforced calcium aluminosilicate composites , J. Mater. Sci., 33, 4181 —4190. 

K. M. Prewo, Tension and Flexural Strength of Silicon Carbide Fiber-Reinforced Glass-Ceramics, J. Mater. Sci., 21, 3590-3600 (1986). 

Figure 8.4 Flexural strength of silicon carbide as a function of temperature.

Density is 1.9 to 2.3 kg/1 and flexural strength 30 to 90 mPa. Silicon oxynitride is used as a lining for cells for the electrolysis of AICI3 to A1 and ZnCl2 to Zn, and as crucibles and tubes for molten salts. It occurs as a constituent of nitride bonds (see silicon nitride, SILICON carbide) and has been used to strengthen silica optical fibres by surface coating. 

K.M. Prewo Tension and flexural strength of silicon carbide fibre reinforced glass ceramics , J. Mat. Sci. 21, 3590-3600 (1986)... 

B.V. Cockeram, Flexural Strength and Shear Strength of Silicon Carbide to Sihcon Carbide Joints Fabricated by a Molybdenum Diffusion Bonding Technique, J. Am. Ceram. Soc., 88, 1892-99 (2005)... 

In addition to the initial work in the alumina and mullite matrix systems previously mentioned, SiC whiskers have also been used to reinforce other ceramic matrices such as silicon nitride,9-13 glass,14 15 magnesia-alumina spinel,16 cordierite,17 zirconia,18 alumina/zirconia,18 19 mullite/zirconia,18-21 and boron carbide.22 A summary of the effect of SiC whisker additions on the mechanical properties of various ceramics is given in Table 2.1. As shown, the addition of whiskers increases the fracture toughness of the ceramics in all cases as compared to the same monolithic materials. In many instances, improvements in the flexural strengths were also observed. Also important is the fact that these improvements over the monolithic materials are retained at elevated temperatures in many cases. 

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