Carbide ceramic material, which is produced by carbide former-infiltration of preform containing porous carbon, for glass-fiber reinforced plastic component, comprises a mass portion of free carbon and a mass portion of free carbide former

摘要

The carbide ceramic material, which is produced by carbide former-infiltration of a preform containing porous carbon, comprises a mass portion of free carbon (less than 1%) and a mass portion of free carbide former (less than 1%). The carbon is uniformly and statistically uniformly distributed in the preform, which is accessible for the carbide former, related to a grid dimension with 1-micrometer scale. The preform is open-porous. The volume portion of the pores in the preform is 30-60%. The pore size in the preform is = 200 nm, where a maximum pore size is 200 nm. The carbide ceramic material, which is produced by carbide former-infiltration of a preform containing porous carbon, comprises a mass portion of free carbon (less than 1%) and a mass portion of free carbide former (less than 1%). The carbon is uniformly and statistically uniformly distributed in the preform, which is accessible for the carbide former, related to a grid dimension with 1-micrometer scale. The preform is open-porous. The volume portion of the pores in the preform is 30-60%. The pore size in the preform is = 200 nm, where a maximum pore size is 200 nm. The pores with the volume portion of 95% in the entire pore volume have a pore size of = 200 nm. The pores are uniformly and statistically distributed in the preform with a pore size of = 200 nm related to the grid dimension with 1-micrometer scale. The carbide ceramic material includes fiber reinforcement and/or particle reinforcement. The fibers of the fiber reinforcement are formed, so that they are not affected by carbide former and during a pyrolysis process. The fibers have coating. A matrix of the preform is produced by pyrolysis of a precursor. The precursor has a resin material, which has a viscosity of 100-600 mPas. A portion of non-volatile components in the resin material of the precursor is 45-60%. Water content in the resin material is 0.3-0.5%. A content of free phenol in the resin material is 0.6%. The resin material contains a portion of reactive alcohol, and furfuryl alcohol. The precursor contains a hardener of hexamethylenetetramine, whose mass portion is 5%. The carbide ceramic material has an open porosity of below 5 vol.%. The carbide former is silicon and the carbide ceramic material has cracks of the preform. An independent claim is included for a method for producing a carbide ceramic material.