Hexaloy® SP SiC is a sintered alpha silicon carbide material designed specifically for optimum performance in sliding contact applications such as mechanical seal faces and product lubricated bearings. This material improves upon the exceptional friction properties of Hexaloy® SA SiC (sintered alpha SiC) through the addition of spherical pores. These pores are discrete, non-interconnecting and dispered in a controlled manner thoughout the body of the material. the spherical pores act as fluid or lubricant reseviors helping to promote the retention of a fluid film at the interface of sliding component surfaces. This "pore" based lubrication mechanism allows Hexaloy®' SP SiC to outperform conventional reaction-bonded and sintered silicon carbides in a wide variety of service conditions.
Corrosion Resistance. Unlike reaction-bonded silicon carbides and tungsten carbides, Hexaloy® SP SiC contains no free silicon phase or metallic binder subject to corrosive attack. This material is a fine grain, single phase SiC product produced via pressureless sintering of submicron silicon carbide powder. As a result of this homogeneous SiC composition, it exhibits the same outstanding corrosion resistance as does its forerunner Hexaloy® SA SiC. Superior performance is assurred across a nearly universal range of environments including both strong acids and bases. Hexaloy® SP SiC's corrosion resistance exceeds that of all reaction-bonded SiC's, tungsten carbides and aluminum oxides.