Elevated temperature diffusion self-lubricating mechanisms of a novel cermet sinter with orderly micro-pores

Effect of Ag and CeO2 on friction and wear properties of Ni-base composite at high temperature

“…1(a)). After adding MoS 2 and CeO 2 , the new phases, such as Cr 3 S 4 , CeS and CeNi 5 , are formed in Ni-Cr-W-Al-Ti-Ag-MoS 2 -CeO 2 during hot-pressing [15]. Besides, there are the free phases of W and MoS 2 in the composite ( Fig.…”

Effect of Microstructure on the Tribological and Mechanical Properties of CuO‐Doped 3Y‐TZP Ceramics

“…From the tribological point of view, the low friction and wear obtained in the case of sample A can be interpreted by a selflubricating mechanism. [8][9][10][11][12][13][14] During sliding against an alumina ball, a soft interfacial layer between the ceramic disk and alumina ball is generated. This soft interfacial layer can act as a lubricant and reduces friction.…”

“…Although here the addition of up to 30 vol% of graphite lowered the friction of Yttria‐doped tetragonal zirconia polycrystalline (Y‐TZP) ceramics, it increased wear significantly. Liu 10 introduced soft metals, such as Pb or Ag, in orderly mico‐pores of several cermets, which led to a decrease in coefficient of friction of 60%–65%. Most references used metals or non‐oxide systems as solid lubricants for self‐lubrication.…”

Dry sliding friction and wear behavior of (TiB2+h-BN)/2024Al composites

“…The increase of load and sliding speed would destroy the stability of surface layer by crack initiation and peeling pits. At this situation, the micro-lubricating film plays an important role on improving the tribological performance [24]. Under the low sliding speed and load, the fine debris appears more easily.…”