Proceedings of SerbiaTrib '13

and lubrication is done so that the bottom of thedisc is immersed to up to depth of 3 mm into thesmall tank with lubricant, whose volume is 30 ml.During rotation of the disc, oil is continuouslyintroduced into the zone of the contact and makesboundary lubrication of contact pair (Figure 3).All experiments were repeated 5 times, and themean values of obtained values are taken asauthoritative.3. RESULTS OF TRIBOLOGICAL TESTSResults of tribological tests of hybrid compositeAl/10SiC/1Gr and basic material A356 are shownin the following diagrams.Wear, mm 3 x 10 -2Wear, mm 3 x 10 -28765432987654321A356, F 1 =40NA356, F 2=80NA356, F 3 =120NA356/10SiC/1Gr, F 1 =40NA356/10SiC/1Gr, F 2=80NA35610SiC/1Gr, F 3=120NV=0.25 m/s, lubrication00 500 1000 1500 2000 2500Sliding distance, mA356, F 1=40NA356, F 2=80NA356, F 3=120NA356/10SiC/1Gr, F 1=40NA356/10SiC/1Gr, F 2=80NA356/10SiC/1Gr, F 3=120NV=0.5 m/s, lubricationDiagrams of wear volume are formed on thebasis of wear scar which is obtained by measuringafter 150 m, 300 m, 1200 m, 2400 m, and they aregiven for all three values of sliding speed (Figure4).It is obvious that the wear rate of the hybridcomposites A356/10SiC/1Gr is several times lessthan the wear rate of the base material A356. Withincrease of sliding speed, wear rate of the hybridcomposite A356/10SiC/1Gr and the base materialare decreases. Wear rate dependence has almostlinear dependence for all values of the normal loads(Figure 5).Wear rate, mm 3 x10 -5 /m4.03.53.02.52.01.51.00.5s=2400 m, lubricationA356, F 1=40 NA356, F 2=80 NA356, F 3=120 NA356/10SiC/1Gr, F 1=40 NA356/10SiC/1Gr, F 2=80 NA356/10SiC/1Gr, F 3=120 N0.00.00 0.25 0.50 0.75 1.00 1.25Sliding speed, m/sFigure 5. Wear rate dependence on sliding speed.With increase of normal load, wear rateincreases. This increase is particularly pronouncedat the base material A356 (Figure 6).4.0s=2400 m, lubricationWear, mm 3 x 10 -2100 500 1000 1500 2000 2500Sliding distance, m87654321A356, F 1=40NA356, F 2=80NA356, F 3=120NA356/10SiC/1Gr, F 1=40NA356/10SiC/1Gr, F 2=80NA356/10SiC/1Gr, F 3=120NV=1 m/s, lubricationWear rate, mm 3 x10 -5 /m3.53.02.52.01.51.00.5A356, V 1=0.25 m/sA356, V 2=0.5 m/sA356, V 3=1.0 m/sA356/10SiC/1Gr, V 1=0.25 m/sA356/10SiC/1Gr, V 2=0.5 m/sA356/10SiC/1Gr, V 3=1.0 m/s0.00 40 80 120 160Load, NFigure 6. Wear rate dependence on normal load.00 500 1000 1500 2000 2500Sliding distance, mFigure 4. Wear volume for all three values of slidingspeed.Wear rate dependence on normal load andsliding speed for sliding distance of 2400 m, isshown in Figure 7.13 th International Conference on Tribology – Serbiatrib’13 131