Prediction of Scuffing Failure Based on Competitive Kinetics of Oxide Formation and Removal: Application to Lubricated Sliding of AISI 52100 Steel on Steel

Cutiongco, Eric C.; Chung, Yip Wah

doi:10.1080/10402009408983338

Cited by 63 publications

(20 citation statements)

References 15 publications

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“…For the mild wear (protected) situation it is first assumed that negligible wear will occur at these locations since the shearing will be located in the boundary layers formed on the steel surface and thus no bulk material will directly be removed. This corresponds well with real systems running in mild conditions since particles generated by this type of systems are mainly built up from chemical products which originated from the chemicals present in the oil [34,35]. The severe wear is based on the brittle wear behavior of high-strength carbon steels and is associated with a high coefficient of friction.…”

Section: Wear Modelmentioning

confidence: 99%

“…10, where the bulk material is protected by ''friction-elements,'' representing the chemical layer, which currently have the sole purpose to indicate the coefficient of friction locally present, under which the NC material is located. The pressure criterion is based on the idea first presented in [33,34], where it is suggested the growth of tribo-chemical film protecting the surface must be greater then the removal rate for the lubricant to protect the surface against severe wear. Here it is assumed that the growth is diffusion-based process and can be expressed as:…”

Section: Friction Modelmentioning

confidence: 99%

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Running-In of Systems Protected by Additive-Rich Oils

Bosman

Schipper

2010

Tribol Lett

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Recent research on mild wearing systems running under boundary lubrication conditions focus more and more on the role of the nano-crystalline layer present at the surface of the components in contact. This layer has a typical thickness of a few tenths of nano-meters up to a few microns depending on the operational conditions. The role of this layer with respect to wear is, however, still unclear as well as its mechanical behavior. In this study, a first step is made in incorporating this type of layer into a wear model. Using an elasto-plastic semi-analytical-method the effect of different material behaviors reported through out current literature for the nano-crystalline layer on wear is studied. From the results it can be concluded that the effect of this mechanically altered layer has an important influence on the wear of the system, especially during the initial phase of running.

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Section: Wear Modelmentioning

confidence: 99%

Section: Friction Modelmentioning

confidence: 99%

Running-In of Systems Protected by Additive-Rich Oils

Bosman

Schipper

2010

Tribol Lett

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“…Previously, among other factors, wear of solid lubricating films [8], wear particles aggravating lubrication [4,19] and white layer formation [10] have been linked to failed boundary lubrication and scuffing. However, often focus seems to be on one single aspect and not on the whole complex process.…”

Section: ) Spalling Of Transferred Material Roughening and Formatiomentioning

confidence: 99%

“…Some researchers focus on how the lubricating film is destroyed, for instance at a critical load or temperature [7]. Others focus on the break down of solid lubricating films, such as oxide layers, which occurs if the wear rate is higher than the rate of formation [4,8].…”

Section: What Is Scuffing?mentioning

confidence: 99%

Scuffing resistance testing of piston ring materials for marine two-stroke diesel engines and mapping of the operating mechanisms

Olander

Jacobson

2015

Wear

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PostprintThis is the accepted version of a paper published in Wear. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the original published paper (version of record):Olander, P., Jacobson, S. (2015) Scuffing resistance testing of piston ring materials for marine two-stroke diesel engines and mapping of the operating mechanisms. AbstractThe incentive is strong for optimising sliding materials to reduce the risk for scuffing. In this study, scuffing tests were performed aiming towards finding new piston ring materials for greener marine diesel engines and also towards understanding scuffing mechanisms better. The tested ring materials where grey iron, Stellite 6, plasma sprayed cermet and high velocity oxy fuel (HVOF) cermet (both cermets with the same compounds: Cr-carbide, Ni, Cr, Mo). The Stellite 6 and HVOF cermet performed somewhat better than the other two materials. Microscopic and spectroscopic studies of failed sample surfaces revealed several characteristic features. It was clear that different mechanisms are active simultaneously, at different parts of the samples. Based on these results, we propose a hypothesis for a scuffing process involving several stages with distinctive mechanisms. Further studies are needed to strengthen this hypothesis and to relate these findings to actual deterioration mechanisms in the engine.

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“…With Eq. [2], a set of f * can be determined using τ * sm and S * m corresponding to the individually measured initial scuffing loads, the realistic piston and piston pin geometry and their material properties, and the actual operating conditions.…”

Section: Scuffing Failure Criterionmentioning

confidence: 99%