Formation of tribochemical films and white layers on self-mated bearing steel surfaces in boundary lubricated sliding contact

Schöfer, Jörg; Rehbein, Peter; Stolz, U.; Löhe, D.; Gahr, K.‐H. Zum

doi:10.1016/s0043-1648(00)00549-4

Cited by 39 publications

(15 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Literature suggests the ZDDP anti-wear additive in the oil used can form a tribofilm around 100 -200 nm thick [69][70][71], and that these tribofilms can exhibit slight increases in hardness with sliding time [73]. Thus, the hardness gains observed at the lower indentation load of 50 gf, which reached an average depth of 1.4…”

Section: Figure 9 Evolution Of Friction Coefficient For All the Sampmentioning

confidence: 98%

“…It should be noted that the surface roughness parameters and friction behavior can be influenced by the formation of a tribofilm during the run-in process. Tribofilms have been reported to form in the presence of ZDDP additives in the oil [69][70][71]. An analysis of variance of the data indicated a significant difference between the hardness inside the contact zone to that of the hardness outside the contact zone for test conditions B-D.…”

Section: Figure 9 Evolution Of Friction Coefficient For All the Sampmentioning

confidence: 98%

See 1 more Smart Citation

The evolution of hardness and tribofilm growth during running-in of case carburized steel under boundary lubrication

Jenson

Roy

Sundararajan

2018

Tribology International

View full text Add to dashboard Cite

Section: Figure 9 Evolution Of Friction Coefficient For All the Sampmentioning

confidence: 98%

Section: Figure 9 Evolution Of Friction Coefficient For All the Sampmentioning

confidence: 98%

The evolution of hardness and tribofilm growth during running-in of case carburized steel under boundary lubrication

Jenson

Roy

Sundararajan

2018

Tribology International

View full text Add to dashboard Cite

“…It involves the influence of contact pressure, microstructural changes, material transformation, chemical reactions and material properties variation [45,61]. The model described in this paper is a relatively simple method to predict the wear particles size distribution.…”

Section: Discussionmentioning

confidence: 99%

A Stress-Criterion-Based Model for the Prediction of the Size of Wear Particles in Boundary Lubricated Contacts

2016

View full text Add to dashboard Cite

In this paper, the formulation and validation of a model for the prediction of the wear particles size in boundary lubrication is described. An efficient numerical model based on a well-established BEM formulation combined with a mechanical wear criterion was applied. The behavior of the model and particularly the influence of the initial surface roughness and load was explored. The model was validated using measurements of the wear particles formed in steel-steel and steel-brass contacts. In the case of steel-steel contact, a reasonable quantitative agreement was observed. In the case of steel-brass contact, formation of the brass transfer layer dominates the particles generation process. To include this effect, a layered material model was introduced.

show abstract

“…Sind diese WEA nur lokal auf kleinen Oberflächensegmenten zu finden, können sie als Anzeichen für das Erreichen der Belastungsgrenze des Werkstoffes betrachtet werden [3,15]. Diese lokalen WEA sind mit konventioneller Schlifftechnik allerdings nur schwer zu präparieren, und die darunter liegenden, für WEA typischen Verformungen des Grundgefüges lassen sich kaum auflösen.…”

Section: Gleitbeanspruchung Von Wälzlagerstahlunclassified

“…8), die einen Systemdruck von 1600 bar zulassen und zusammen mit Pumpe-Düse Systemen ca. 3 [18] 1986. Sie untersuchten die zu der Zeit üblichen Dieselkraftstoffsorten.…”

Section: Charakterisierung Von Einspritzsystemen Und Kraftstoffenunclassified

Hohe Lebensdauer, niedriger Verschleiß

Dobler

Schöfer

Meyer

et al. 2003

Materialwissenschaft Werkst

Self Cite

View full text Add to dashboard Cite

Because of growing demands regarding quality and life-time of state-of-the-art engineering systems, tribological research is an essential part of the industrial development process. Besides failure analysis the increase of product oriented knowledge becomes increasingly important. Therefore, the Robert Bosch GmbH has been applying modern analysis tools like the focused ion beam system for several years. This tool permits the detection of smallest variations in microstructure and the documentation of the development of wear processes. In the field of fuel injection new stringent emission legislation requires direct injection systems capable of producing ever increasing high injection pressures. Since a vast majority of these systems relies on fuel lubricity, the ability to meet the demands for life-time and performance depends on sufficient lubricating properties of diesel and gasoline fuel. To ensure these properties a permanent extension of know-how and testing methods is inevitable. For products without presence of lubricating media due to functional requirements, an additional incorporation of liquid or consistent lubricants is often inevitable. Therefore the Robert Bosch GmbH intensively supports the development of special high-performance lubricants.

show abstract

Formation of tribochemical films and white layers on self-mated bearing steel surfaces in boundary lubricated sliding contact

Cited by 39 publications

References 18 publications

The evolution of hardness and tribofilm growth during running-in of case carburized steel under boundary lubrication

The evolution of hardness and tribofilm growth during running-in of case carburized steel under boundary lubrication

A Stress-Criterion-Based Model for the Prediction of the Size of Wear Particles in Boundary Lubricated Contacts

Hohe Lebensdauer, niedriger Verschleiß

Contact Info

Product

Resources

About