The effect of surface roughness on the transfer of polymer films under unlubricated testing conditions

Blended Polyetheretherketone (PEEK) and polyimide-based polymers are excellent lighter tribomaterials that make possible the replacement of sliding metallic components in machinery. In this work a quantitative analysis of the effect of surface roughness on the transfer of polymer films was investiga...

Full description

Autores:
Escobar Nuñez, Emerson
Polycarpou, Andreas
Tipo de recurso:
Article of journal
Fecha de publicación:
2015
Institución:
Universidad Autónoma de Occidente
Repositorio:
RED: Repositorio Educativo Digital UAO
Idioma:
eng
OAI Identifier:
oai:red.uao.edu.co:10614/12175
Acceso en línea:
http://red.uao.edu.co//handle/10614/12175
https://doi.org/10.1016/j.wear.2014.12.049
Palabra clave:
Fricción (Mecánica)
Friction
Solid lubrication
Blended polymers
Transfer films
Surface roughness
Compressor
PEEK
Polyimide
ATSP
Rights
openAccess
License
Derechos Reservados - Elsevier B.V, 2015
Description
Summary:Blended Polyetheretherketone (PEEK) and polyimide-based polymers are excellent lighter tribomaterials that make possible the replacement of sliding metallic components in machinery. In this work a quantitative analysis of the effect of surface roughness on the transfer of polymer films was investigated using a specialized tribometer, under air-conditioning and refrigeration specific operating conditions. Specifically, polyimide (Vespel SP-21), polyimide (Vespel SP-211), PEEK with carbon fibers, and Aromatic Thermosetting Polyester (ATSP) polymer pins were tested against gray cast iron disks under unlubricated unidirectional conditions. It was found that a continuous transfer layer of polymer on the surface of the cast iron disks with mirror finish (low surface roughness) was produced in all the combinations of tested blended polymers. In the case of the polymer pins tested against cast iron disks with high surface roughness, a discontinuous transfer layer was observed