Tribology in manufacturing

Jackson, Mark J.; Morrell, Jonathan S.

doi:10.1533/9780857091444.161

Cited by 8 publications

(4 citation statements)

References 32 publications

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“…Whereas in case of PEEK with low Ra, the contact area between the investigated surface and the counter body is higher from the beginning of the test, therefore the COF also tends to have a higher value from the beginning. This affirmation was also found in literature (Greenwood andMorrell, 1958, Jackson andMorrell, 2011). It is explained that when two surfaces are in contact and Ra decreases, the number of contact spots will increase compared to a rougher surface.…”

Section: Friction Coefficientsupporting

confidence: 85%

Impact of surface roughness and contact pressure on wear behaviour of PEEK, POM, and PE-UHMW

et al. 2017

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Three thermoplastics -PEEK, POM, and PE-UHMW -were investigated in order to highlight the influence of surface roughness, wear regime, and contact pressure on their wear performance and to understand the role each parameter plays in the development of the wear mechanisms. The surface roughness (Ra) was modified in order to reach a high roughness value and a low roughness value. The change in contact pressures was achieved by conducting measurements at the same applied load (30 N) and at the same exerted pressure (62 MPa). The wear regime was varied by increasing the number of testing cycles. The frictional behaviour of PEEK shows a threestage development which is strongly influenced by the increase of roughness and wear regime, whereas in case of PE-UHMW and POM the frictional behaviour does not seem to be affected by these parameters. A strong correlation was observed between material's mechanical properties, wear mechanisms and frictional behaviour.

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Section: Friction Coefficientsupporting

confidence: 85%

Impact of surface roughness and contact pressure on wear behaviour of PEEK, POM, and PE-UHMW

et al. 2017

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“…Mekanik ve fiziksel özellikler bakımından anizotropik yapıdadır; özellikle, kayma deformasyonuna karşı direnci bazal düzlemde diğer yönlere göre çok daha düşüktür. Bu tabakalar yükle karşılaştıklarında kırılmakta ve yağlayıcı etkiyi arttırmaktadırlar [9,11].…”

Section: Gi̇ri̇ş (Introduction)unclassified

“…Yüksek vakum uygulamalarında veya soygaz atmosferinde iyi yağlayıcı özelliklere sahip olmayan grafit, yüksek sıcaklık uygulamaları ve nemli ortamlar için idealdir [11,12]. Gazların ve buharın kontrollü ilavesiyle, grafitte düşük sürtünme ve aşınmanın oksijen ve su buharının varlığına bağlı olduğu ortaya çıkmıştır [10,11]. Grafitin, kristal köşeleri üzerine adsorbe olan gazlarla ve su buharı ile güçlü kimyasal bağlar oluşturabilmesi grafitin katı yağlayıcı özelliğini arttırmaktadır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

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The Effect of Graphite Particles as Lubricant Additive on the Friction and Wear Behaviour of AISI H11 Steel

Ünlüoğlu

Çelik²

2022

Politeknik Dergisi

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Engineering the Atomic Interface of Refractory‐Metal‐Reinforced Copper Matrix Using Direct Ink 3D Printing

Das,

de Oliveira,

Kumar

et al. 2024

Adv Eng Mater

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Herein, 3D printing involving metallic materials with substantially distinct melting temperatures and their immiscibility presents a formidable challenge. Nevertheless, it may be possible to overcome this challenge using the direct ink writing (DIW) method within such immiscible systems. In this article, a successful fabrication of Cu‐based composites utilizing the additive manufacturing process that is DIW technique, followed by a post‐sintering process, is presented. The secondary addition to the Cu–matrix includes tantalum (Ta), tungsten (W), and niobium (Nb). The rheological properties of the composite inks are also analyzed for the DIW technique. The underlying reasons behind the increased mechanical, wear, and thermal properties are assessed through experimental and molecular dynamics simulations. Microstructural analysis is conducted using optical and scanning electron microscopes. Mechanical, electrical, thermal, and wear properties are evaluated at ambient temperature, and comparisons are established with DIW‐processed pure Cu. Elemental mapping through energy‐dispersive spectroscopy and high‐resolution transmission electron microscopy confirm the distribution of W, Ta, and Nb particles within the composite. The 3D printing of immiscible alloy components opens new avenues for exploring novel material properties, mixtures, and composite materials, thus fostering the development of innovative materials.

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Tribology in manufacturing

Cited by 8 publications

References 32 publications

Impact of surface roughness and contact pressure on wear behaviour of PEEK, POM, and PE-UHMW

Impact of surface roughness and contact pressure on wear behaviour of PEEK, POM, and PE-UHMW

The Effect of Graphite Particles as Lubricant Additive on the Friction and Wear Behaviour of AISI H11 Steel

Engineering the Atomic Interface of Refractory‐Metal‐Reinforced Copper Matrix Using Direct Ink 3D Printing

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