Magnetotribology of ferromagnetic/ferromagnetic sliding couple

Zaïdi, H.; Amirat, Mohamed; Frêne, Jean; Mathia, T.; Paulmier, D.

doi:10.1016/j.wear.2007.01.081

Cited by 38 publications

(15 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There were a number of earlier experiments done, with the magnetic field announced to use mainly to enhance coating/electrocoating processes. Important mechanical effects of the magnetic field usage have been studied for decades, to mention just a few (Bocksted and Klamecki, 2007;El Mansori and Klamecki, 2007;Zaidi et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Highlights of Magnetoelectropolishing

Hryniewicz

Rokosz

2014

Front. Mater.

View full text Add to dashboard Cite

The research work has been concerned on the studies and development of electrochemical polishing in the magnetic field magnetoelectropolishing (MEP) in comparison with the standard electropolishing (EP) methods performed without stirring (EP) and the process with the forced electrolyte mixing (MIX). Advanced techniques were used in the studies, to measure the effects of the surface treatment.They are as follows: scanning electron microscopy (SEM/EDS), X-ray Photoelectron Spectroscopy, Secondary Ion Mass Spectroscopy, surface roughness, and nanoindentation measurements. For the corrosion studies, the electrochemical methods were used, such as: open circuit potential OCP, potentiodynamic curves PC, and electrochemical impedance spectroscopy EIS measurements. The MEP process is advised mainly due to the opportunity to enrich the surface layer with the chromium compounds (austenitic stainless steels), or titanium compounds (CP Ti Grade 2, Nitinol). The surface layers of biomaterials after MEP process contain much lower amount of carcinogenic compounds, like chromium VI oxidation stage (Cr 6+) (austenitic stainless steels) and nickel compounds (austenitic stainless steel and Nitinol) versus those ones obtained after EP and MIX treatments. It is interesting that apart from the significant modification of the surface layer obtained after MEP, also mechanical properties, such as nanohardness, modulus of elasticity, and mechanical resistance to bending and torsion, undergo considerable advantageous changes. All they make the MEP process very promising for application in many clean industries, such as medical equipment and devices, electronics, food industry, etc.

show abstract

Section: Introductionmentioning

confidence: 99%

Highlights of Magnetoelectropolishing

Hryniewicz

Rokosz

2014

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…The presence of a magnetic field around the ferromagnetic steel couple in sliding contact modifies considerably its tribological behaviour with an important decrease in the wear rate [16][17][18][19][20][21][22][23]. Applied magnetic field around the rotating sliding ferromagnetic steel/steel modifies the friction and the wear behaviour of the contact [24]. When a magnetic field is applied, the contact in ambient air progressively became black, covered by a brittle thick black layer of oxides, which leads to a low friction and a low wear mode.…”

Section: Introductionmentioning

confidence: 99%

Effect of Magnetic Field on the Friction and Wear of Polyamide Sliding against Steel

Abdel-Jaber¹,

Mohamed²,

Ali³

2014

MSA

View full text Add to dashboard Cite

The present work discusses the friction and wear of polyamide sliding against steel in the presence of magnetic field. Tests were carried out at dry and oil lubricated steel surfaces. Paraffin and vegetable oils such as almond, castor, corn, glycerine, jasmine, olive and sun flower oils were used as lubricants. The friction coefficient and wear were investigated using pin on disc wear tester. Based on the experimental results, it was found that application of magnetic field on the contact area affected both friction coefficient and wear of polyamide sliding against steel at dry and oil lubricated conditions. Magnetic field decreased friction coefficient. Lubricating the sliding surface by paraffin oil as well as almond, castor, corn, glycerine, jasmine, olive and sun flower oils significantly decreased friction coefficient. Generally, friction coefficient increased with increasing applied load. Dry sliding of polyamide against steel surface showed increased wear with increasing load. The lowest wear values at no magnetic field were displayed by jasmine oil followed by sun flower, almond, olive, castor, corn, glycerine and paraffin oils. Under the application of magnetic field, the lowest wear values were displayed by sun flower oil followed by jasmine, castor, glycerine, olive, paraffin, almond and corn oils. It can be concluded that friction and wear decrease observed at dry sliding can be explained on the basis that presence of magnetic field around the contact area decreased the adherence and transfer of polyamide into the steel surface. For oil lubricated sliding, the polar molecules of the tested lubricating oils were much affected by the magnetic field, where they oriented themselves to the polar end directed towards the sliding surface making a close packed multi-molecular layered surface film that could protect the sliding surfaces from excessive wear.

show abstract

“…The wear volume in ferromagnetic materials decreased under a magnetic field. This is expected to be related to that oxidation-promoting effect [5][6][7], hardness of frictional surface material [6]，birth and death of wear particles at friction interface [7,9], protection effect of oxidation film [7,8] and acceleration of severe-mild wear transition [5]. Hiratsuka et al [5], however, reported that wear volume increased under the horizontal magnetic field.…”

Section: Wear Process Under Magnetic Fieldmentioning

confidence: 99%

“…Kumagai et al [13] performed experiments changing atmosphere pressure in a range of 10 5 -10 0 Pa. The magnetic field decreases wear volume in Ni/S45C, but an inflection point where wear changes from increase to decrease exists at a pressure of 10 3 Pa in S45C/S45C: wear increased at pressure less than 10 3 Pa and decreased at pressure greater than 10 3 Pa. Zaidi et al [6] also reports that wear of steel increases under magnetic field at low pressure of 5×10 -5 Pa. It is reported for inert gas atmosphere that wear increased [14], and decreased [5] depending on material combination.…”

Section: Effect Of Atmospherementioning

confidence: 99%

Fretting wear under magnetic field

Nasu¹,

Satô²

2010

Tribology and Design

View full text Add to dashboard Cite

In our current society, based on science and technology, many kinds of electrical and mechanical systems are working under magnetic fields which become of a higher level year-over-year. The materials used in the above mentioned systems have suffered exposure to undefined risks due to magnetic effects. The authors have studied the complicated effect of magnetic fields on fretting wear, e.g. in some cases the effect is to accelerate wear volume and in other cases it does not. In the present paper the authors describe the outline of the effect of magnetic fields on fretting wear and the state of the art.

show abstract

Magnetotribology of ferromagnetic/ferromagnetic sliding couple

Cited by 38 publications

References 16 publications

Highlights of Magnetoelectropolishing

Highlights of Magnetoelectropolishing

Effect of Magnetic Field on the Friction and Wear of Polyamide Sliding against Steel

Fretting wear under magnetic field

Contact Info

Product

Resources

About