Tribological behaviors of bulk Ti3SiC2 and influences of TiC impurities

Tribological Behavior of Ti3SiC2 Sliding Against Ni-based Alloys at Elevated Temperatures

“…However, a self-lubricating film formed on the surface of Ti 3 SiC 2 led to the friction coefficient of lower than 0.1 when against diamond [6]. Other reports also found the layer of tribo-oxide on the surface of Ti 3 SiC 2 which led to lower-friction coefficient and/or the higher wear resistance [7][8][9][10]. Up to now, most tribological studies were conducted at ambient temperature except for the work by Gupta et al [11,12].…”

Tribological behavior of Ti3SiC2/(WC–10Co) composites prepared by spark plasma sintering

“…Researchers have characterized the transition behavior where the friction coefficient changes from an initial value to a steady value at the initial stage of a continuous friction process and the random fluctuation behavior where friction coefficient turbulently fluctuates throughout the entire friction process, as a general appearance of the dry-sliding friction [13]. Similar results were also observed by Zhai et al [28], Sun et al [29]. The friction coefficients of TWC against GCr15 steel pair were in the range of 0.3-0.7.…”

“…5 and 7. Zhai et al [28] also observed that the wear resistance of the TiC-Ti 3 SiC 2 could not be enhanced by the hard TiC particles when compared with Ti 3 SiC 2 , and the wear resistance was weakened when the normal pressure was larger than about 0.5 MPa. As shown in Table 1, the Vicker's microhardness of TWC doped with 1, 5, 7 and 10 wt.% WC-10Co were HV 0.2 376, HV 0.2 322, HV 0.2 344 and HV 0.2 335, respectively.…”

“…It was conceivable that the oxide film of Ti 3 SiC 2 was adhesive. Otherwise, the film could be coated with difficulty over the Ti 3 SiC 2 worn surface [28]. The frictional oxide film acted as an antifriction which was beneficial to the reduction of friction coefficient.…”

High Temperature Self-Lubricating Materials

“…However, in the previous literature on friction and wear, Mn+1AXn phases did not exhibit the expected tribological properties at high temperatures. Although there exists the debate on their intrinsically self-lubricating behavior, they could be appropriate candidate for high temperature self-lubricating matrix due to the combination of metals and ceramics properties [103][104][105][106][107]. In order to lubricate Mn+1AXn phases, many efforts have been made in recent years.…”