A Synergetic Effect of Silver and Carbon Nanotubes on the Tribological Behavior of TiAl-Based Composites

Journal Article · Sun Sep 15 04:00:00 EDT 2019 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-019-04264-Z· OSTI ID:22970516

Yang, Kang; Ma, Hongru; Zhao, Weibing ^[1]; Li, Xiaoxue ^[2]; Lin, Haibo ^[3]; Liang, Yulong ^[1]

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1. Anyang Institute of Technology, Department of Mechanical Engineering (China)
2. Ordos Institute of Technology, School of Mechanical and Traffic Engineering (China)
3. Sichuan University of Science and Engineering, School of Mechanical Engineering (China)

This work explores the addition of silver and multiwalled carbon nanotubes (MWCNTs) for acquiring a better tribological property at the lowest cost. The friction and wear behavior of TiAl-Ag-MWCNTs at 0-160 min is estimated on a HT-1000 ball-on-disk tribometer. The friction coefficients and wear rates of TAMs-E at 0-160 min are smaller than those of TAMs-D and TAMs-F. At 0-20 min, the MWCNTs are pulled out from a TAMs-E to be exposed on the wear scar, and then, they are well combined with silver. For accumulation of silver, it is helpful to form a lubrication film to achieve a decrease of 4.51-1.63 × 10{sup −4} mm{sup 3} N{sup −1} m{sup −1} in wear rate and a reduction of 0.37-0.24 in friction coefficient. The lubrication film at 20-160 min can accomplish low friction and low wear. Close to 0.5 wt.%MWCNTs and 7.5 wt.%Ag are used in this study for small values of 0.19-0.26 in friction coefficient and 2.36-4.43 × 10{sup −4} mm{sup 3} N{sup −1} m{sup −1} in wear rate. It jointly satisfies the lowest cost for the fabrication of TiAl-based composites.

• OSTI ID: 22970516
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 9 Vol. 28; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON NANOTUBES
ELECTRON MICROSCOPY
FRICTION FACTOR
LUBRICATION
SILVER
SOLID LUBRICANTS
WEAR