Abstract: By using tetrabutyl titanate as the main material，nano-TiO2/ Al2O3 composite particles in acidic abundant aqueous solution was prepared by the peptization and reflux method at low temperature( 80℃ ) ． The properties of composite particles，including surface morphology，the phase composition of the coating layer，specific surface area，were characterized by SEM，XRD，XPS，BET． The results show that the TiO2 nanoparticles in coating layer of which the main phase was anatase，coated on the Al2O3 powders uniformly and discretely． The surfaces of particles were more rough after coating，the value of specific surface area of the composite particles was elevated by over 30 times than that before coating． Compared with uncoated Al2O3 powders as filler，the abrasive loss of composite coatings decreased to 55 percent of that coatings filled with uncoated Al2O3 powders，when the composite particles were filled in wear-resistant coatings based on the silicone modified epoxy resins．Finally，the wear properties of wear-resistance coatings was discussed preliminarily．
Key words: composite particles; nano-TiO2; surface modification; wear-resistance
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