Tribological behaviour of Cu60Zr30Ti10 bulk metallic glass

Bhatt, Jatin; Kumar, S.; Chen, Dong; Murty, B.S.

doi:10.1016/j.msea.2006.12.060

Cited by 49 publications

(26 citation statements)

References 16 publications

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“…The increase in the COF for high loads is consistent with that observed by Bhatt et al [26] for a Cubased BMG, which was attributed to the increase in debris formation due to the brittle fracture of crystallized BMG. In order to investigate this, the microstructures have been analysed (see section 3.2.2.…”

Section: Accepted Manuscriptsupporting

confidence: 90%

Strategy for preventing excessive wear rate at high loads in bulk metallic glass composites

et al. 2017

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The effect of nickel additions to tune the wear performance of Cu 45.5 Zr 51 Al 3.5 at. % alloy has been studied to present a new strategy for preventing excessive wear rate at high loads in metallic glass composites. This strategy consists on proper selection of a doping element in controlled concentrations with the ability to decrease the glass transition temperature (T g ) of the alloy so that the friction temperature during sliding is close to the T g . This enables the formation of crystalline phases and their subsequent oxidation (lubricating layer) on the contact surface during sliding thus enhancing the wear resistance. Proper doping can also contribute towards the wear resistance when the content of the doping element promotes the martensitic transformation. The results show that the main wear mechanism for the three studied alloys (Cu 45.5 Zr 51 Al 3.5 , Cu 44.5 Zr 51 Al 3.5 Ni 1 and Cu 43.5 Zr 51 Al 3.5 Ni 2 at. %) is governed by delamination and the mass loss increases with increasing load from 1 to 10 N. However, for the maximum load of 15 N, the calculated friction temperature is close to T g for the Ni-containing alloys and partial crystallization and oxidation take place resulting in a mass loss decrease from about 2.6 mg (at 10 N) to about 2.1 mg (at 15 N).

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Section: Accepted Manuscriptsupporting

confidence: 90%

Strategy for preventing excessive wear rate at high loads in bulk metallic glass composites

et al. 2017

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“…This has triggered a growing interest in designing novel Cu-based BMGs [9] as touch surfaces. Despite the interest in the topic, the number of studies dealing with the antimicrobial behaviour of BMGs is still very small.…”

Section: Introductionmentioning

confidence: 99%

“…The authors concluded that the number of colony forming units (CFU) on Zr-based BMGs after 4 h of moist contact was about one order of magnitude lower than on Ti-6Al-4V alloy. From the point of view of the tribological behaviour of metallic glasses, there are numerous studies about the interaction of a cylindrical sample and a surface (pin-on disc) or the interaction between a diamond tip and the surface (scratch test) when the material is either in bulk shape or as thin film [8,9,[11][12][13][14]. However, studies dealing with the ability to tune the wear resistance of BMG composites by controlling the formation of intermetallic phases are scarce.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial and wear performance of Cu-Zr-Al metallic glass composites

et al. 2017

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The antimicrobial and wear behaviour of metallic glass composites corresponding to the Cu 50+x (Zr 44 Al 6 ) 50-x system with x=(0, 3 and 6) has been studied. The three compositions consist of crystalline phases embedded in an amorphous matrix and they exhibit crystallinity increase with increasing Cu content, i.e., decrease of the glass-forming ability. The wear resistance also increases with the addition of Cu as indirectly assessed from H/E r and H

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“…The friction coefficient decreases with an increasing load in vacuum, as compared to in air. The dry sliding-wear behaviors of Cu 60 Zr 30 Ti 10 in different annealing states have been compared [7]. The wear mechanism is such that a crystallized metallic glass exhibits poor wear performance arising from easier crack initiation and propagation through the relatively brittle crystalline phases.…”

Section: Introductionmentioning

confidence: 99%