Understanding the friction and wear mechanisms of bulk metallic glass under contact sliding

Tribological behavior of Zr-based bulk metallic glass sliding against polymer, ceramic, and metal materials

“…The frictional coefficient then decreased, whereas the wear rate increased. These results are in agreement with other works [37]. The wear scars on the BMG surfaces of the steeleBMG pairs measured at higher loads confirmed a larger increase in track width than in depth because of the relatively higher ductility of steels compared with ceramics.…”

Thermal Conductivity and Wear Behavior of HVOF-Sprayed Fe-Based Amorphous Coatings

“…Hence, it is possible a subsequent crystallization took place. Nonetheless, it has been proved that the precipitated nanocrystal in amorphous could enhance its hardness and toughness, and increased its wear resistance [37][38][39]. Therefore, even if the contact temperature was higher than T x , the formation of nanocrystals in amorphous matrix contributed to reduce the wear in this study.…”

“…Correspondingly, the wear was also reduced, resulting in the lowest wear rate, as shown in Figure 9. In addition, due to the hardness of high carbon martensitic GCr15 steel decreased at this temperature (about 633 HV [19]), intensifies the wear of GCr15, leading to the highest wear rate compared to that at room temperature and 200 • C. Notably, as sliding at 400 • C, the actual contact temperature of friction surface during sliding process might be elevated and possibly higher than glass transition (T g ) and crystallization temperature(T x ) [35][36][37]. Hence, it is possible a subsequent crystallization took place.…”

Surface roughness effect on the friction and wear of bulk metallic glasses

“…It has been reported that the materials have excellent permanence in contact sliding applications, e.g., in magnetic iron core for high rotation speed motors, gears and bearings [4]. However, because the microstructure of a BMG does not have a long-range order, a microstructural change can occur during contact sliding, which leads to the variations of friction and wear properties [5,6]. It has been found that the microstructural transformation of a BMG varies from case to case.…”