Tribological analysis of the surface layer coated by sintered serpentine-reinforced composites

doi:10.1007/s40195-017-0674-4

Abstract

Abstract:

In this work, the serpentine powders were sintered to make the serpentine-reinforced Al-matrix composites, and the microstructures of which were characterized by differential scanning calorimetry, thermal gravimetric analyzer, and X-ray diffractometer. Scanning electron microscopy equipped with energy dispersive spectroscopy. Results show that the sintered serpentine powders were deeply absorbed on the worn surface and embedded in the furrows and scratches of the matrix, forming a self-repairing surface layer which reduces the friction coefficient. The surface layer coated by serpentine was compact, dense, and uniform with the friction time prolonged, compensating the worn loss and increasing the matrix mass.

Key words: Serpentine, Friction, Wear, Surface layer

Xiao Wang, Jun-Wei Wu, Lu-Hai Zhou, Xi-Cheng Wei, Wu-Rong Wang. Tribological analysis of the surface layer coated by sintered serpentine-reinforced composites[J]. Acta Metallurgica Sinica (English Letters), 2018, 31(6): 615-622.

Figures/Tables 15

Fig. 1 SEM image of the serpentine powder

Fig. 2 Schematic diagram of the composite fabrication process

Table 1 Fabrication process of the composite

Parameter	Values
Ball milling time	3 h
The weight ratio of ball to powder	10:1
The milling speed	300 rpm
Compacting pressure	350 MPa
Sintering temperature	560 °C
Sintering time	3 h
Protective atmosphere	99.9% purity nitrogen

Fig. 3 Schematic diagrams and dimensions of pin and disk

Fig. 4 XRD patterns of original and 560 °C sintered serpentine

Fig. 5 DSC and TG curves of the serpentine powder

Fig. 6 SEM morphology of ball-milled powders

Fig. 7 SEM morphology of the composite microstructure

Fig. 8 Element distributions of Al, Mg, O, Si in Fig. 6

Fig. 9 Friction coefficient as a function of test time

Fig. 10 Mass increment as a function of test time

Fig. 11 Worn surface morphologies of the disk after different sliding time: a 1800 s; b 5400 s

Fig. 12 Corresponding cross-sectional morphologies of a Fig. 11a, b Fig. 11b

Fig. 13 EDS spectra of a point I in Fig. 11; b point II in Fig. 12

Fig. 14 Diagrammatic model of the self-repairing surface layer

References

[1]	B.S. Zhang, B.S. Xu, Y. Xu, Z.X. Ba, Z.Z. Wang, Appl. Surf. Sci. 285, 759(2013)
[2]	Y.W. Zhang, Z.P. Li, J.C. Yan, T.H. Ren, Y.D. Zhao, Ind. Lubr. Tribol. 68, 1(2016)
[3]	B. Reynard, Lithos 178, 171 (2013)
[4]	J.W. Wu, X. Wang, L.H. Zhou, X.C. Wei, W.R. Wang, Tribol. Lett. 65, 93(2017)
[5]	Y.S. Jin, S.H. Li, Z.Y. Zhang, H. Yang, F. Wang, Tribol. Int. 37, 561(2004)
[6]	C.F.Higgs III, E.Y.A. Wornyoh, Wear 264, 131 (2008)
[7]	F.Y. Zhao, M. Kasrai, T.K. Sham, Z.M. Bai, Tribol. Lett. 50, 287(2013)
[8]	L.I. Pogodaev, I.A. Buynaovskii, E.Y. Kryukov, J. Mach. Manuf.Reliab. 38, 476(2009)
[9]	H.L. Yu, Y. Xu, P.J. Shi, H.M. Wang, M. Wei, K.K. Zhao, B.S. Xu, Wear 297, 802 (2013)
[10]	F. Wang, Mater. Sci. Eng., A 399, 271 (2005)
[11]	H.L. Yu, Y. Xu, P.J. Shi, Tribol. Int. 43, 667(2010)
[12]	B.S. Zhang, Y. Xu, F. Gao, P.J. Shi, B.S. Xu, Y.X. Wu, Appl. Surf. Sci. 257, 2540(2011)
[13]	Z.N. Jia, Y.L. Yang, J.J. Chen, X.J. Yu, Wear 268, 996 (2010)
[14]	Y.L. Yang, J. Ma, X.W. Qi, X.S. Meng, Wear 318, 202 (2014)
[15]	H.L. Yu, Y. Xu, P.J. Shi, H.M. Wang, W. Zhang, B.S. Xu, Tribol. Int. 44, 1736(2011)
[16]	X. Wang, J.W. Wu, X.C. Wei, R.D. Liu, Q. Cao, Ind. Lubr. Tribol. 69, 158(2017)
[17]	R.X. Zheng, H. Yang, T. Liu, K. Ameyama, C.L. Ma, Mater. Des. 53, 512(2014)
[18]	Z. Sadeghian, S. Zohari, B. Lotfi, C. Broeckman, J. Alloys Compd. 589, 157(2014)
[19]	V. Umasankar, M.A. Xavior, S. Karthikeyan, J. Alloys Compd. 582, 380(2014)
[20]	H.Z. Lai, S.Q. Wang, N. Yu, Acta Miner.Sin. 23, 124(2003)
[21]	X.W. Qi, L. Lu, Z.N. Jia, Y.L. Yang, H.R. Liu, Tribol. Int. 49, 53(2012)
[22]	M. Megahed, M.A. Attia, M. Abdelhameed, A.G.El-Shafei, Acta Metall. Sin. (Engl. Lett.) 30, 781(2017)
[23]	H. Ashrafi, M.H. Enayati, R. Emadi, Acta Metall. Sin. (Engl. Lett.) 28, 83(2015)
[24]	Y. Yang, J.L. Gu, F.Y. Kang, X.Q. Kong, W. Mo, Appl. Surf. Sci. 253, 7549(2007)
[25]	X.W. Qi, Z.N. Jia, Y.L. Yang, B.L. Fan, Tribol. Int. 44, 805(2011)
[26]	M. Mookherjee, L. Stixrude, Earth Planet Sci.Lett. 279, 11(2009)