Dry sliding up to 7.5 m/s and 800 °C of thermally sprayed coatings of the TiO2-Cr2O3 system and (Ti,Mo)(C,N)-Ni(Co)

In this paper, the wear resistance of alumina dry sliding against APS-sprayed coatings of three compositions in the TiO2-Cr2O3 systems (compositions 75Cr2O3/25TiO2, 27Cr2O3/73TiO2 and 23.5Cr2O3/76.5TiO2) is studied from room temperature up to 800 °C and sliding speeds in the range of 0.1-7.5 m/s. The results are compared with those of a chromia and a titania suboxide coatings, as well as with (Ti,Mo)(C,N)-Ni(Co) coatings and bulk (Ti,Mo)(C,N)-NiMo cermets as self-mated couples.