Abstract
A composite particle of ultra fine titanium nitride particles and carbon black fine particles was prepared by reductive nitrification in N2 from titania ultra fine particles coated on carbon black fine particles. The nitrification temperature of the titania was lower than that of titania mechanically mixed with carbon black powder. As the amount of titania coated on the carbon black particles was larger, the size of the nitrified particles on the carbon black particle became larger and the remaining titanium oxide increased. The size of the titanium nitride particles varied with the content of ZrO2 in the titania coating on the carbon black particles.
