Abstract
Physical contact between the moving parts of machines is inevitable in nature. The loss of dimensional stability due to wear is a great challenge in the industrial environment. To cater to this need, the development of advanced materials is in a continuous process. The present work focuses on evaluating the mechanical and tribological properties of the newly developed Al composite reinforced with hard particle TiB2 and two solid lubricants, graphite and nano MoS2. Three different compositions of specimens with constant weight % of TiB2 and graphite are maintained to 10 %. A planetary ball mill is employed to reduce the micro MoS2 to nano level, and their weight % of nano MoS2 is maintained in varying levels of 10, 15, and 20 %. The liquid processing method of the stir casting technique is followed to fabricate the hybrid composite specimens. The microstructural study confirms the homogeneous distribution of the particles, whereas XRD analysis confirms the presence of particles. The pin and disc dry sliding wear test is conducted to examine the wear rate and CoF. The wear test outcomes declare that the increased inclusion of nano MoS2 reduces the wear loss and CoF. Post wear analysis through SEM micrographs confirms the presence of a lubricant layer that regulates the change in wear mechanism concerning the load. The remarkable low CoF of 0.11 is recorded for rich reinforcement with minimum load.
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Abbreviations
- TiB2 :
-
Titanium diboride
- MoS2 :
-
Molybdenum disulfide
- CoF:
-
Coefficient of friction
- XRD:
-
X-ray diffraction analysis
- SEM:
-
Scanning electron microscope
- AMMC:
-
Aluminium metal matrix composites
- B4C:
-
Boron carbide
- Wr :
-
Cross-sectional area of the pin
- vs :
-
Volume of the pin before start
- ve :
-
Volume of the pin after end
- sds :
-
Sliding distance before start
- sde :
-
Sliding distance after end
- Ws :
-
Specific wear rate
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V. Vaishnav is an Undergraduate Scholar pursuing Mechanical Engineering at PSG College of Technology, Coimbatore. His area of research interest extends to develop hybrid nanocomposites, tribology, and finite element method.
C. Venkatesh received M.E. (Gold medalist) and Ph.D. from Anna University, Chennai. He is currently working as an Assistant Professor in Adama Science and Technolgy University, Adama, Ethiopia. His area of research interest extends to design of metal forming dies, finite element method, surface engineering, micro and nano composite, nano cutting fluids and optimization techniques.
R. Praveen Kumar is an Undergraduate Scholar pursuing Mechanical Engineering at PSG College of Technology, Coimbatore. His area of research interest extends to fabricate metal matrix composites and nano composites.
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Vaishnav, V., Kumar, R.P. & Venkatesh, C. Influence of nano MoS2 particle on the mechanical and tribological properties of Al-TiB2-Gr hybrid composite. J Mech Sci Technol 36, 857–867 (2022). https://doi.org/10.1007/s12206-022-0133-7
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DOI: https://doi.org/10.1007/s12206-022-0133-7