Tribochemical aspects of interactions between high-dispersed serpentine particles and metal friction surface

Tribological Performance and Application of Antigorite as Lubrication Materials

“…It is found that the difference of tribological performances AMNP-oil system: tests were applied to the various AMNP-oil systems in an effort to determine the tribological performances of antigorite. The principal devices used were the four-ball tester (FB), pin-on-disk tester (P-D) and pin-on-flat tester (P-F); however, ring-on-disk tester (R-D), rectangular flat on rotating cylinder tester (RF-RC), disk-on-disk tester (D-D), thrust washer tester (TW) and flat-on-cylinder tester (F-C) have also been used [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. AMNP used for the study had a particle size less than 3 microns, and most of them were less than 1 micron.…”

“…Numerous studies have reported that the Si and Mg contents of most friction pairs treated with AMNP (Figure 10, middle image) were significantly higher than that of without AMNP [14,[21][22][23]26,27,[49][50][51][52][53]55,56,61,69,72,77,85,91,[94][95][96][97][98][99]. Some friction pair surfaces treated with AMNP only detected Si but no Mg [17,25,54,55,64,66,74,78,79,84,86,91,95], or only detected Mg but no Si [18,60,100], or neither Si nor Mg were detected [57,82,83]. According to Zhao [101], the friction pair surface without AMNP mainly contains Fe, O and C, while in addition to Fe, O and C, Mg and Si appear on the surface with AMNP.…”

“…The internal relationship among antigorite mineralogy-surface features of friction pairs-application performance is shown in Figure 15. Dolgopolov et al, found that the friction pair treated with AMNP has good wear resistance [16,17]. They thought that good wear resistance is due to the formation of a two-level structure on the rubbing surfaces.…”

“…The friction process involving AMNP is accompanied by substitution of magnesium atoms of the mineral structure by iron atoms from the friction surface. As a result, recombination of the crystalline lattice of the initial mineral and the formation of pseudo-mineral structures similar to the plane SiO compounds occur [17]. They found that antigorite is capable of forming a transfer film with tended crystals upon friction.…”

“…Significant progress has been achieved in the research and development of antigorite's application in the lubrication of machine components. The research results indicated that antigorite micro-nano powder (AMNP) may significantly reduce friction coefficient and wear of friction pairs, and be one kind of excellent anti-frictional and lubrication materials [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. This paper reviews the mineralogy, thermal decomposition, lubrication behavior and application of antigorite lubricant.…”