Patent ID: 7258722

Claim:
A method of producing TiC-transition metal-based complex powder, comprising the steps of: (a) preparing a raw material mixture by dissolving or dispersing a TiO(OH) 2 slurry, and cobalt nitrate in water, followed by spray-drying to obtain precursor powder; (b) calcining the precursor powder to form ultrafine Ti—Co complex oxide powder; (c) mixing the ultra fine Ti—Co complex oxide powder with nano-sized carbon particles, followed by drying to obtain complex oxide powder; and (d) subjecting the dried complex oxide powder to reduction/carburization in a non-oxidizing atmosphere wherein the reduction and carburization is performed by reduction at a temperature between 600° C. to 1100° C. and then reduction and carburization at a temperature between 1200° C. to 1350° C.