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rate and wear resistance of extruded Mg-9Sn and Mg-9Sn-3Yb alloys were measured within a load range of 20–240 N and 20–380 N at a sliding velocity of 0.785 m/s, respectively. The wear tracks, worn surface and wear edge were observed using a scanning electron microscope and an energy dispersive X-ray spectrometer. The results indicated that wear rate, coefficient of friction and wear resistance......
rate and wear resistance of extruded Mg-9Sn and Mg-9Sn-3Yb alloys were measured within a load range of 20–240 N and 20–380 N at a sliding velocity of 0.785 m/s, respectively. The wear tracks, worn surface and wear edge were observed using a scanning electron microscope and an energy dispersive X-ray spectrometer. The results indicated that wear rate, coefficient of friction and wear resistance......
,the wear rate firstly increases from R.T.to 200℃,almost remains stable from 200℃ to 600℃,and then decreases with further increasing the temperature up to 800℃.It is also found that the prepared composite...Wear Behavior of a NiCr/AgVO3 Self-Lubricating CompositeWenting ZHANG1,2,Lingzhong DU1,Hao LAN1,Chuanbing HUANG1,Weigang ZHANG11. State Key Laboratory of Multi-phase Complex Systems,Institute......
, and the hardness (HB) decreases from 33 to 14. The friction coefficient of the Ni-Cr/h-BN composite decreases firstly from 0.385 to 0.216, and then increases to 0.284, while the wear rate decreases... addition. Key words: Ni-Cr/h-BN composite; hexagonal boron nitride; solid lubricating film; friction coefficient; wear rate 1 Introduction Metal-based self-lubricating composites have found wide......
coefficient; wear rate 1 Introduction Thermal spray allows to produce coatings up to several millimeters thickness. It can also be used to recover worn machinery parts that can be mechanized afterwards... respectively, in order to work out the wear rate and friction coefficient. The microstructural and structural characterization of the as-received feedstock wires and coatings was obtained by scanning......
and plastic deformation. However, the untreated specimen AZ91D suffers from severe adhesive wear. This is evident by the feature of heavy plastic deformation (Fig.3(a)) and the large mass wear rate (Table 1... small particles of wear debris found at the surface (Figs.3(b) and (c)) and small mass wear rate (Table 1). The results of the EDS analysis show that these particles are mainly composed of iron oxides......
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was investigated using pin-on-disc tribo-tester. Rate of wear and friction coefficient of the inner wall thickness of hollow cylindrical cast specimen was analyzed using Taguchi based L27 orthogonal array, where the percentage of graphite particles were observed higher. Variable process parameters those influenced the rate of wear directly or indirectly were: applied load (15, 25 and 35 N), slide velocity......
homogenized, solution heat treated, followed by aging for different time duration. The specimens were characterized for microstructure and tested for microhardness and wear rate. A hybrid model with a linear... indicate that increase in the composition of nickel and tin increases the microhardness and decreases the wear rate of the alloy. The increase in the concentration of nickel and tin decreases the peak......
-dimensional rolling contact FEM model and the wear model. The simulated results were contrasted with measured results in field test. The simulated results showed the motor car wheels had larger rotation rate...), H is the hardness of materials of wheel, HV 260; vslip is the slip velocity; p is the normal contact pressure of node; w is the wear rate of node; k implies the wear coefficient. JENDEL [16......
