Journal
TRIBOLOGY TRANSACTIONS
Volume 56, Issue 1, Pages 101-108Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10402004.2012.729296
Keywords
Wet Contact; Dry Friction; Titanium Alloy; Wear Mechanisms
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Funding
- NSFC [50935001, U0734007]
- Important National Science & Technology Specific Projects [2012ZX04003-051, 2011ZX04015-031, 2012ZX04012-021]
- National 863 Project [2009AA04Z150]
- National Basic Research Program of China [2010CB731703, 2011CB706804]
- Visiting Scholar Foundation of Key Lab in University [GZKF-201024]
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The friction and wear properties of titanium alloys TC4, TC18, and TA19 against tungsten carbide under both dry sliding and water-lubricated conditions were investigated using a ball-on-flat sliding friction apparatus under a load of 3 N and at a sliding speed of 112 mm/s. These investigated titanium alloys were observed by scanning electron microscopy (SEM) and energy-dispersive spectrometry (EDS). The results indicated that the kinetic friction coefficients as a function of sliding time increased at the initial friction stage under dry conditions and vary within a small range under water-lubricated conditions. Furthermore, the coefficient of friction of the TA19/WC-Co tribopair was lower than that of both TC4/WC-Co and TC18/WC-Co tribopairs. However, under water-lubricated conditions, the friction coefficients and wear volume of both TC4/WC-Co and TA19/WC-Co tribopairs decreased obviously compared to that under dry conditions, and the abrasion resistance increased. On the other hand, the effect of water lubrication on the TC18/WC-Co tribopair was limited. The results showed that TC4, TC18, and TA19 alloys have different tribological behaviors and wear mechanisms when sliding against tungsten carbide under different friction conditions.
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