چكيده لاتين :
Auto-ignited gel combustion process has been usedfor producing a red hematite-zircon
based pigment. The combustible mixtures contained the metal nitrates and citric acid as. oXi~izers
andfuel, respectively. Sodium silicate (water glass) was used as silica source for prod~clngzircon
phase. X-Ray Diffractometery, Electron Microscopy and Simultaneous Thermal Analysis were used
for characterization of reactions happened in the resulted dried gel during its heat-treatment.
L * a* b * color parameters were measured by the CIE (Commission International de IיEclairage)
colorimetric method. This research has showed that solution combustion was unable to produce
coral pigment as the end product of combustion without the need for any further heat treatment
process.
