Assessment of the reaction of SiC powders with iron-based alloys

Article abstract of DOI:10.1007/BF00356431

The degree of reaction and dispersion achieved when SiC powders are brought into contact with liquid iron-based alloys has been assessed by a levitation dispersion test SiC was found to react rapidly with molten iron matrices to form iron silicides and graphite. Attempts to generate protective TiC or Al₂O₃ coatings on SiC in situ in liquid iron proved unsuccessful; neither was precoating SiC and Ni and/or Cu successful in providing protection against molten iron alloys. Unprotected SiC also reacted readily with iron in the solid state (1000-1200°C). Precoating with Ni, however, provides protection and prevents SiC dissolution and silicide formation during sintering at such temperatures.