High strength tin-based overlay for medium and high speed diesel engine bearing tribological applications

Zhang, Yi; Tudela, Ignacio; Pal, Madan; Kerr, Ian

doi:10.1016/j.triboint.2015.03.010

Cited by 28 publications

(25 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The top intermetallic sublayer in Multilayer 2 coating is much closer to the surface and possesses excellent anti-friction propoerties, as explained by the authors in their pervious work [1]. Such intermetallic sublayer was formed at the interface between the Sn and Ni by thermal annealing after electroplating.…”

Section: Friction Behaviourmentioning

confidence: 82%

“…100Cr6 steel ball (diameter = 6.35 mm) was used for scratching the flat coupon (L 50 x W 50 x T 5.2 mm) made of a lead-free bronze substrate electroplated with 20 ± 3 µm of Sn based coating and 2-3 µm of Ni based anti-diffusion barrier layer at the interface. Monolayer (1-layer), Multilayer 1 (3-layers) and Multilayer 2 (5-layers) structures of Sn based coatings were produced following the electroplating procedure as described in authors previous work [1][2][3]. The friction and wear performances of of the later two coating structures were compared against the benchmark Monolayer structure.…”

Section: Methodsmentioning

confidence: 99%

“…Figure 3 shows a comparison between the friction performance of three structures of Sn based coatings as function of multiple scratch cycles (number of scratches). From the previous experience and reference to the published literature [1], it was hypothesied that the multilayer structure of soft Sn based electroplated coating on hard lead-free bronze substrate may potentially result in better friction properties than monolayer structure. However, to investigate the effect of layer structures with and without intermetallic sublayer on pure sliding friction, the experiments were carried out at a range of loads to find the most suitable loading condition to avoid the influence of substrate's hardness.…”

Section: Materials Characterisationmentioning

confidence: 99%

“…Tribological applications in an internal combustion engine need high performing materials due to increasing firing pressures in combustion chamber for higher fuel efficiency and reduced emissions. In view of such a necessity, authors in past, proposed the multilayer Sn based coating to overcome the structural weaknesses of monolayer Sn based coating [1]. They demonstrated that the inclusion of SnNi intermetallic sublayer within Sn coating led to a significant improvement in the tribological performances [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…In view of such a necessity, authors in past, proposed the multilayer Sn based coating to overcome the structural weaknesses of monolayer Sn based coating [1]. They demonstrated that the inclusion of SnNi intermetallic sublayer within Sn coating led to a significant improvement in the tribological performances [1][2][3][4]. The thickness of the coating is an important parameter that influences the performance of tribological contact [5].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Tribological evaluation of soft metallic multilayer coatings for wear applications based on a multiple pass scratch test method

Anand¹,

Burmistroviene²,

Tudela³

et al. 2017

Wear

View full text Add to dashboard Cite

Tribological evaluation of soft metallic multilayer coatings for wear applications based on a multiple pass scratch test method © 2016. This manuscript is made available under the CC-BY-NC-ND 4.0 license 1 https://creativecommons.org/licenses/by-nc-nd/4.0/ AbstractA novel multiple scratch test method was developed for characterising the tribological performance of three different soft tin (Sn) based coating structures. Monolayer coating structure with soft Sn matrix, and 3-layers and 5-layers multilayer coating structures with soft Sn matrix and hard SnNi intermetallic sublayer (s) were produced by electroplating process. Experiments were carried out under various loading conditions and scratching the same coated surface by a 100Cr6 steel ball 50 times in a unidirectional cyclic manner. Load of 10 N allowed each scratch to remove the coating layer-by-layer and thus differentiating the characteristic friction and wear behaviours of three different coating structures. Multiple scratch test method also eliminated the influence of surface roughness of coating and hardness of substrate on tribological results. Post-test surface and cross-sectional analysis of scratched coatings showed the beneficial effects of the lubricious intermetallic sublayer within 3-layers and 5-layers multilayer Sn coating structures. The improvement in performance was even higher with lesser thickness of sublayers in 5-layers structure. In addition, scratch hardness and Vickers hardness measurements also demonstrated the increment in resistance to abrasive wear by the presence of intermetallic sublayer.

show abstract

Section: Friction Behaviourmentioning

confidence: 82%

Section: Methodsmentioning

confidence: 99%

Section: Materials Characterisationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%