Abstract:Friction and wear behavior of silicon carbide based aluminum metal matrix composite and aluminum matrix alloy have been studied for sliding speeds of 3.14 m/s and 3.77 m/s and load range from 10 N to 30 N under dry and lubricated environment, respectively. The experiments were performed on pin on disk tribometer (Make: DUCOM). The composite was fabricated by stir casting process and has several challenges like inferior bonds and interfacial reaction products which will deteriorate the mechanical and tribologic… Show more
“…There is a temperature rise at specimen interface that causes softening and plastic flow of the material which results in higher wear rates. 14 Figure 14.Variation of weight loss; (a) sliding distance 250 m, (b) sliding distance 500 m.…”
Section: Resultsmentioning
confidence: 99%
“…Singh et al. 14 present the results of friction and wear behaviour tests carried out on the Al 7075-based alloy with 10 wt.% of SiC. Materials were investigated for two sliding speeds, i.e.…”
The article discusses the results of research on the effect of 4 wt.% Cu addition on the tribological properties of composites based on aluminium matrix reinforced with SiC particles. The research also included the analysis of the microstructure and the hardness. The composites were made of elementary powders in a rigid die on a single-action compaction press and then sintered under the nitrogen atmosphere. The silicon carbide content was: 2.5; 5; 7.5; 10 and 15 wt.%. The tests of tribological properties were carried out using a block-on-ring T05 tester under the technically dry friction conditions, and the counter-sample was made of 100 Cr6 steel. The research covered the determination of mass losses, coefficients of friction as well as friction coefficient changes as the function of process duration and material. The obtained results proved that the addition of 4 wt.% Cu helps to reduce the friction coefficient and for composites that contain above 7.5 wt.% SiC also improves their wear resistance. It was also demonstrated that both the addition of Cu as well as an increase of SiC content in the composites have a positive effect on friction by reducing the adhesive wear share in the friction process.
“…There is a temperature rise at specimen interface that causes softening and plastic flow of the material which results in higher wear rates. 14 Figure 14.Variation of weight loss; (a) sliding distance 250 m, (b) sliding distance 500 m.…”
Section: Resultsmentioning
confidence: 99%
“…Singh et al. 14 present the results of friction and wear behaviour tests carried out on the Al 7075-based alloy with 10 wt.% of SiC. Materials were investigated for two sliding speeds, i.e.…”
The article discusses the results of research on the effect of 4 wt.% Cu addition on the tribological properties of composites based on aluminium matrix reinforced with SiC particles. The research also included the analysis of the microstructure and the hardness. The composites were made of elementary powders in a rigid die on a single-action compaction press and then sintered under the nitrogen atmosphere. The silicon carbide content was: 2.5; 5; 7.5; 10 and 15 wt.%. The tests of tribological properties were carried out using a block-on-ring T05 tester under the technically dry friction conditions, and the counter-sample was made of 100 Cr6 steel. The research covered the determination of mass losses, coefficients of friction as well as friction coefficient changes as the function of process duration and material. The obtained results proved that the addition of 4 wt.% Cu helps to reduce the friction coefficient and for composites that contain above 7.5 wt.% SiC also improves their wear resistance. It was also demonstrated that both the addition of Cu as well as an increase of SiC content in the composites have a positive effect on friction by reducing the adhesive wear share in the friction process.
“…Besides heat and wear resistance, a positive influence on the specific fuel consumption and the emission of engine was also shown. In article [4], the researchers demonstrated satisfactory tribotechnical properties of the composite on the basis of silicon carbide in the matrix from metallic aluminum. In this case, the intensity of wear varied from 3-6•10 -8 mm 3 /N•m.…”
Section: Y E P U H a C H E V S K Amentioning
confidence: 99%
“…At present, a technology of coatings is admitted to be the most effective method of the surface protection, and components and technology of their application have a tendency toward a reduction in cost, energy and resource consumption and in the equipment complexity [2][3][4][5]. Therefore, this research is devoted to the study of mechanisms of structure formation, wear resistance and mechanisms of coatings wear under conditions of elevated temperatures of the contact zone.…”
“…We hope to improve the mechanical properties on the basis of keeping the inherent antifriction and wear resistance of the blend, and obtain reinforced materials that can meet the actual industrial production and application demands in both tribological and mechanical properties. 17…”
Two series of 10% polytetrafluoroethylene (PTFE)/polyether ether ketone (PEEK) composites reinforced with potassium titanate whisker (PTW/PTFE/PEEK) and chopped glass fiber (GF/PTFE/PEEK) were prepared and characterized. We investigated the effects of the additives on thermal stability, tribological properties, mechanical properties, and rheological behavior. The results illustrated that the mechanical properties of 10% PTFE/PEEK blend can be dramatically improved by incorporating either PTW or GF; however, the reinforcing effect of GF was found to be superior. It was found that 1% additive resulted in blends with the best tribological properties. Compared to the unmodified blend, the friction coefficient and wear rate of the 1% PTW blend decreased by 7.2% and 21%, respectively, while the corresponding values of 1% GF blend decreased by 0.66% and 51%, respectively.
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