Friction reduction by nanothin titanium layers on anodized alumina

Matijošius, Tadas; Ručinskienė, A.; Selskis, Algirdas; Stalnionis, G.; Leinartas, Konstantinas; Asadauskas, Svajus

doi:10.1016/j.surfcoat.2016.09.083

Cited by 15 publications

(16 citation statements)

References 41 publications

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“…The latter coating still showed lower dynamic friction than that of surfaces before anodization [4]. Consequently, anodization itself can be considered a means to reduce friction, static COF in particular.…”

Section: Friction Tendencies Of Anodized Alumina Coatingsmentioning

confidence: 96%

“…Deposition of Ti layers of 16 nm, 75 nm and 2.3 μm thickness was performed during a previously reported study [4]. Briefly, anodized Al specimens were processed in DC/RF magnetron sputtering device Univex 350 (Leybold Vacuum Systems).…”

Section: Magnetron Sputteringmentioning

confidence: 99%

“…Pin-on-Disc Tribometer (Anton Paar TriTec SA) was used for friction tests in ball-on-plate reciprocating linear configuration with 6 mm OD corundum (99.8% Al2O3, grade G16, roughness Ra 0.025 μm, hardness 2100 HV) balls (Ceratec) under 1 N or 10 N loads, 2 cm/s velocity and 8 mm cycle length [4]. At 2 cm/s velocity each friction cycle contained ~100 data points of recorded friction force.…”

Section: Tribological Testsmentioning

confidence: 99%

“…Cr layers of 1.5-2 nm in thickness were applied on all specimens in order to obtain the necessary electrical conductivity on the nanoporous surface by using a magnetron sputtering device Quorum Q150T ES (Judges Scientific Plc). Calculations of nanopore diameter, density and porosity were described previously [4]. Briefly, the latter represented a % ratio of nanopore openings to remaining surface area.…”

Section: Microscopy and Profilometrymentioning

confidence: 99%

“…Recent study showed that nanothin Ti layers can significantly reduce dynamic COF on anodized alumina [4]. It remains unclear whether this effect extends into static COF.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Electrolyte and Ti Layers on Static and Dynamic Friction of Anodized Alumina

Matijošius

Gedvilas

Gečys

et al. 2017

Proccedings of International Scientific Conference "BALTTRIB 2017"

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Static friction is important for many non-lubricated surfaces, especially when friction is intermittent. Coefficients of Friction (COF) were evaluated on industrial aluminum alloys 1050 and 6082, which were freshly anodized in sulfuric/oxalic or phosphoric acid electrolytes to 60 μm coating thickness. Hard anodizing significantly reduced COF. Under 10 N load friction trends were nearly identical despite sliding velocity variation from 0.02 to 0.5 cm/s, while 1 N load led to higher static COF. Magnetron sputtering was used to deposit Ti layers. Static COF went down from over 0.4 to ~0.2 in 16 nm and 75 nm thick layers, while that of 2.3 µm had no positive effect. Dynamic COF was also similarly reduced, suggesting possible industrial applications.

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Section: Friction Tendencies Of Anodized Alumina Coatingsmentioning

confidence: 96%

Section: Magnetron Sputteringmentioning

confidence: 99%

Section: Tribological Testsmentioning

confidence: 99%

Section: Microscopy and Profilometrymentioning

confidence: 99%

“…Recent study showed that nanothin Ti layers can significantly reduce dynamic COF on anodized alumina [4]. It remains unclear whether this effect extends into static COF.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations