Scanning electron microscopy and microprobe investigation of high speed sliding wear of aluminum oxide

Friction and wear behaviors of Al 2 O 3 /TiC micro-nano-composite ceramic sliding against metals and hard materials

“…Conversely, the friction coefficient when sliding against chrome steel increased with the increase of sliding speed. As can be seen from Table 1, the heat conductivity of stainless steel is the smallest, thus the temperature at the contact area will become higher with the increased sliding speed, which promotes the chemical reaction between stainless steel and Al 2 O 3 [19], leading to the material easier to peel off from the stainless steel ball. As observed in Fig.…”

“…The worn surface uncovered with the layer (spectrum 2) was composed of Al, O, C and Ti elements, and the content of Fe was very tiny. It is known that FeO·Al 2 O 3 is formed under conditions of sliding wear [19]. When sliding against stainless steel at 10 N and 60 m/min, the theoretical temperature at the friction contact area reached up to 1267 K according to Eq.…”