Effect of milled B4C nanoparticles on tribological analysis, microstructure and mechanical properties of Cu–4Cr matrix produced by hot extrusion

• Autorzy: Singh S. C. E. , Selvakumar N.

Identyfikatory

DOI

10.1016/j.acme.2016.11.010

• Języki publikacji: EN

Abstrakty

EN

In this paper, the dry sliding wear and friction behavior of Cu-4Cr-xB4C nanocomposites produced by powder metallurgy by varying the proportions of boron carbide viz. (x = 0, 4 and 8 wt.%) were studied. Die set assembly was preferred for making green compacts using a compression testing machine. The sintered compacts were hot extruded at 600 °C to reduce the porosity and to attain preform density of 92%, thereby improving the hardness and wear resistance. Scanning electron microscope (SEM) and X-ray diffraction were used to characterize the powders. Vickers hardness tester was used to evaluate the hardness of different compositions. Pin-on-disc instrument was used to find out the wear behavior of the composites. It was found that the wear loss and friction coefficient increased with an increase in applied load and sliding distance for all the compositions. The wear mechanisms which could be interpreted with SEM analysis of the nanocomposites were also studied.

Słowa kluczowe

EN

Cu-4Cr-B4C; hot extrusion; wear; hardness; powder metallurgy

PL

Cu-4Cr-B4C; metalurgia proszków; gorące wytłaczanie

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2017
• Tom: Vol. 17, no. 2
• Strony: 446--456
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Singh S. C. E.

• Centre for Nano Science and Technology, Department of Mechanical Engineering, Mepco Schlenk Engineering College, Sivakasi, Virudhunagar 626 005, Tamil Nadu, India

autor

Selvakumar N.

• Centre for Nano Science and Technology, Department of Mechanical Engineering, Mepco Schlenk Engineering College, Sivakasi, Virudhunagar 626 005, Tamil Nadu, India

Bibliografia

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• [15] Suhrit Mula, Pankajini Sahani, S.K. Pratihar, Siddhartha Mal, Carl C. Koch, Mechanical properties and electrical conductivity of Cu–Cr and Cu–Cr–4% SiC nanocomposites for thermo-electric applications, Materials Science and Engineering A 528 (2011) 4348–4356.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)