Preparation of nanocrystalline Ti(C,N) solid solution powders via carbothermal reduction-nitridation reaction of nano TiO_2 in close nitrogen atmosphere was investigated.

With titanium-bearing blast furnace slag, silica fume, bauxite chalmette and carbon black as raw materials, (Ca, Mg)α′-Sialon-AlN-TiN powders were synthesized by carbothermal reduction-nitridation (CRN).

Factors influencing synthesis of β-Sialon by carbothermal reduction-nitridation are reviewed.

Carbothermal Reduction and Nitridation(CRN) process is one of the effective methods with the potential for large-scaled industrial application, using for the preparation of low cost & high performance SiAlON ceramic materials.

TiN/β′-Sialon electroconductive ceramic powder was synthesized by CRN(carbothermal reduction-nitridation) with high-titania slag,bauxite chalmette,silicon fume and carbon black as starting materials.

Carbothermal Reduction and Nitridation (CRN) process is one of the effective methods with the potential for large-scale industrial application, particularly for the preparation of low cost & high performance SiAlON refractories which can be used in future purifying metallurgy.

Based on thermodynamic analysis,Si3N4 powders were synthesized by carbothermal reduction and nitridation from iron ore tailings and carbon black as raw materials.

Sialon powders were prepared by carbothermal reduction and nitridation method at 1450 ℃ and 1500 ℃ using high-alumina fly ash and carbon coke as raw materials.

One way is the hot-pressing process using chemical starting materials, and another is Carbothermal Reduction and Nitridation process using natural starting materials.