Subsurface multilayer evolution of ZrB2–SiC ceramics in high-speed sliding and adhesion transfer conditions

Self-Lubricating Effect of WC/Y–TZP–Al2O3 Hybrid Ceramic–Matrix Composites with Dispersed Hadfield Steel Particles during High-Speed Sliding against an HSS Disk

“…Nevertheless, no voids were formed during such a motion, and on the contrary, even some self-healing behavior was demonstrated when this quasi-viscous mass filled up the interfragmentary spaces and cracks (Figure 17c). Such an effect is similar to that demonstrated in high-speed sliding on ultrahigh temperature ZrB 2 -20 vol.% SiC ceramics by the in situ formed melted borosilicate glass [8,9].…”

“…High-speed (high-temperature) sliding is gaining more and more interest in tribology in connection with studying tribological characteristics and behavior of new composite materials, especially if prospecting for those capable of demonstrating adaptation mechanisms [1][2][3][4][5][6][7][8][9]. These adaptation mechanisms are usually related to the generation of anti-friction or/and anti-wear films on the worn surfaces from the components of materials used in the tribological testing as well as active environmental elements such as oxygen [1][2][3][4][5][6][7][8][9].…”

“…High-speed (high-temperature) sliding is gaining more and more interest in tribology in connection with studying tribological characteristics and behavior of new composite materials, especially if prospecting for those capable of demonstrating adaptation mechanisms [1][2][3][4][5][6][7][8][9]. These adaptation mechanisms are usually related to the generation of anti-friction or/and anti-wear films on the worn surfaces from the components of materials used in the tribological testing as well as active environmental elements such as oxygen [1][2][3][4][5][6][7][8][9]. The first stage of such an adaptation mechanism can be intense deformation or grain refining, generation of wear debris, adhesive transfer, and high-temperature tribo-oxidation of them with the mechanochemical formation of low-friction and self-lubricating products such as solid or liquid mixed oxides, etc.…”

“…The first stage of such an adaptation mechanism can be intense deformation or grain refining, generation of wear debris, adhesive transfer, and high-temperature tribo-oxidation of them with the mechanochemical formation of low-friction and self-lubricating products such as solid or liquid mixed oxides, etc. [1][2][3][4][5][6][7][8][9].…”

“…High-speed sliding usually means unlubricated sliding at speeds in the range of 5-90 m/s and only a limited number of materials can be capable of sustaining that harsh condition [7][8][9][10][11][12][13][14][15][16][17][18][19]. Those may be hybrid sliding pairs with ceramics, ceramic matrix (CMCs), or metallic matrix (MMCs) composites rubbed against hardened alloyed steel counterbodies [7][8][9][10][11][12][13][14][15][16][17][18][19]. It is worthwhile noting that despite temperatures as high as 1500-3000 • C that the melted Hadfield steel.…”