Carbides properties

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. 

T. J. Kosolapova, Carbides Properties, Production and Applications, Plenum Press, New York, 1971. 

Oxygen also removes sulfur, phosphorus, silicon, and other impurities in the iron. Steel is a mixture of several physical forms of iron and iron carbides. Properties are controlled by the amount of carbon and other... 

Since 1930, cemented carbides (also called hardmetals) steadily attained a greater share in tungsten consumption. It is of interest to ask why the demand for cemented carbide grew so rapidly. Table 2.9 shows a chronological table indicating the most important events in cemented carbide research and development, a process which is still under way today. We recognize that what we call cemented carbides or hardmetals are in reality a very wide palette of materials with different properties. Cemented carbide properties can be adjusted by several variations and combinations of the components, as shown in Table 2.10. Hence cemented carbides could be applied widely. Figure 2.10 presents a breakdown of the fields of application of cemented carbides. 

Linde A from Buehler See also Linde and Union Carbide. Properties a-fonn [609,826], well-crystallized a-form and y-form [136], BET specific surface area 12.6 mVg [826], 16 mVg [136], 12 m-/g [609], particle size 1 pm [609], well-crystallized a-fonn particle size 0.1-0.5 pm, y-fonn, average diameter 20 nm, the latter accounts for 60% of the surface area [136]. 

Lasday, S. B. Alpha Silicon Carbide Properties Advantageous for Automotive Water Pump Seal Faces Produced at New Facility in W. Germany, Ind. Heat. [35-39] (1990). 

Kosolapova, T.A. (1971) Carbides, Properties, Productions, and Applications. Plenum, New York. 

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