Friction and wear properties of friction materials containing nano/micro-sized SiO2 particles
| Autor: | Ahmet Akdemir, Necati Ataberk, Kezban Banu Sugozu, Behcet Dağhan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Silica fume Brake lining Mechanical Engineering Composite number Nano sio2 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Hot pressing Surfaces Coatings and Films Brake pad 020303 mechanical engineering & transports General Energy 0203 mechanical engineering Nano engineering Cast iron Composite material 0210 nano-technology |
| Zdroj: | Industrial Lubrication and Tribology. 68:259-266 |
| ISSN: | 0036-8792 |
| DOI: | 10.1108/ilt-06-2015-0083 |
| Popis: | Purpose – Among the components used for a car brake lining, the chemical and structural properties of the abrasives, jointly with the morphology and size of the particles influence the friction parameters and stability of the composite. This paper aims to investigate the effect of nano SiO2 particles in brake pads on friction and wear properties. Design/methodology/approach – In this paper, the effects of SiO2 (Silica) particles of varying size on the friction-wear properties of polymeric friction composites are investigated. Four friction composites were prepared containing (5, 10 Wt.%) micro silica (MS) particles and (5, 10 Wt.%) nano silica (NS) particles. The samples were produced by a conventional procedure for a dry formulation following dry-mixing, pre-forming and hot pressing. Friction and wear characteristics of the specimens against to a disk made of cast iron were studied. Friction coefficient, specific wear rate and hardness of specimens were obtained. Detailed examinations on the worn surface were analyzed using a scanning electron microscope. Findings – The results of test showed that the inclusion of nano silicon carbide (SiC) powder improved the wear performance significantly. Friction coefficient (μ) of NS samples was higher than the MS samples. Micro-SiC showed poor performance and μ. High wear performance was exhibited in materials containing 5 Wt.% NS and 10 Wt.% NS. Originality/value – This paper emphasizes the importance of nano-composites in the automotive industry and helps to industrial firms and academicians working on wear of materials. |
| Databáze: | OpenAIRE |
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