Dry sliding friction and wear response of WC-Co hardmetal pairs in linearly reciprocating and rotating contact

Delgado, Yeczain Perez; Bonny, Koenraad; Baets, Patrick De; Neis, Patric Daniel; Fereira, Vanessa Rodriguez; Malek, Olivier; Zhang, Fei; Lauwers, Bert

doi:10.21825/scad.v2i1.20430

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…It is obvious that most of the research has only focused on the tribological performance of materials under a single RSM or USM. Whereas only a few researchers noticed the influence of the RSM and URM on friction and wear [19][20][21][22][23]. Although some researches have been carried out on the difference of RSM and USM, the investigations regard to the tribological difference of typical tribo-pairs under RSM and URM is seldom mentioned.…”

Section: Introductionmentioning

confidence: 99%

A comparison of wear between unidirectional and reciprocating sliding motions under different applied loads and lubricants

Liu,

Li,

et al. 2023

Phys. Scr.

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Exploring the wear mechanisms of tribo-pairs is essential to reducing friction and wear. Although it has been known that the wear mechanisms between reciprocating sliding motion (RSM) and unidirectional sliding motion (USM) are different, the differences are seldom reported, which causes trouble for many researchers in selecting proper tribo-pairs or wear test methods. Herein, we systematically explore the effect of RSM and USM on the wear mechanism for several typical friction and lubricant materials, such as alloys, liquids, and solid lubricants. It is found that tribo-pairs suffer unstable sliding under RSM, and sliding speed as well as sliding direction change frequently, which makes it difficult to form a transfer layer or tribo-chemical reaction film, leading to high friction and abrasive wear for hard alloys and DLC coating. Additionally, the quasi-static stage under RSM, when lubricated with polyalphaolefin (PAO) 40, does not facilitate elastohydrodynamic (EHD) lubrication, which typically prevents wear. However, stable sliding under USM could lead to adhesive wear, increasing the friction coefficient for soft TC4 alloys. Although wear under RSM is generally higher than that under USM, increasing the applied load could diminish the wear difference for hard metals.

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Section: Introductionmentioning

confidence: 99%

A comparison of wear between unidirectional and reciprocating sliding motions under different applied loads and lubricants

Liu,

Li,

et al. 2023

Phys. Scr.

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Tribological Behavior of Polytetrafluoroethylene under Unidirectional Rotation, Reciprocating Sliding, and Torsion Motion

Cao¹,

Gao²,

Yao³

et al. 2016

Tribology Transactions

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Improvement of Sliding Performance for Ball on Disc Tribo-Partners Using Graphite Like Carbon Solid Lubricant Coating

Wen¹,

Yao²,

Yang³

2018

MSA

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Sliding wear tests of chilled cast iron tappet-disc and cam-ball tribo-partners were conducted by using ball on disc testing device. Magnetron sputtering CrTiAlN hard coating and Graphite like carbon (GLC) solid lubricant coatings were applied on either one or both of the contact surfaces on tribo-partners. Ball crater device and scanning electron microscope were used to investigate surface wear of rubbed track on disc and wear scar on ball. The sliding performances of tribo-partners were evaluated in terms of coefficient of friction at sliding surfaces and specific wear rate (SWR) on both of the rubbed surfaces under specific test conditions. All test results showed that GLC solid lubricant coating on both surfaces of tappet-disc and cam-ball was the best option to allow this tribo-partners having high performance in terms of sliding under high load with low coefficient of friction and low SWR. The advantage of using GLC solid lubricant coating is to enable mechanical parts made of ordinary and sustainable materials (e.g. cast iron or plain steels) to be operated under even harsher conditions of higher load and higher wear environment with improved performance.

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Dry sliding friction and wear response of WC-Co hardmetal pairs in linearly reciprocating and rotating contact

Cited by 3 publications

References 12 publications

A comparison of wear between unidirectional and reciprocating sliding motions under different applied loads and lubricants

A comparison of wear between unidirectional and reciprocating sliding motions under different applied loads and lubricants

Tribological Behavior of Polytetrafluoroethylene under Unidirectional Rotation, Reciprocating Sliding, and Torsion Motion

Improvement of Sliding Performance for Ball on Disc Tribo-Partners Using Graphite Like Carbon Solid Lubricant Coating

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