Scratch evaluation on a high performance polymer
Article dans une revue avec comité de lecture
The scratching process is a well know concept and is usually defined as a kind of surface abrasion, where plastic deformation is promoted by relative friction between soft phase and a hard intender. It is necessary to reduce material loss to minimum or even to reach zero to have an efficient and effective functionality of the materials. Polymers being highly sensitive to wear and scratch damage, their various modes of deformation such as, tearing, cracking, delamination, abrasive and adhesive vary with a narrow range of contact variables like applied normal load, sliding velocity, interfacial lubrication and testing temperature. This is particularly important when these materials are used to improve the tribological performance by adding various types of fillers such as, carbon fibers, graphite,PTFE, TiO2, and ZnS are added. The polymers with nanocomposites have the advantages over micro- composites from the viewpoint of wear and scratch damage, the underlying mechanism of damage in the single asperity mode is still unclear. The goal of this study is to experimentally evaluate the deformation modes and the friction processes involved during the scratching of polymer reinforced with nanocomposites. The scratches were produced on the semicrystalline polyetheretherketone (PEEK) surface using a Rockwell C diamond indenter was pressed onto the flat surface of each sample, until a complete loadindentation depth-curve was achieved. These scratched surfaces were assessed with optical microscope and scanning electron microscope (SEM) for prevailing deformation mechanism and the geometry of damage.
Showing items related by title, author, creator and subject.
Article dans une revue avec comité de lectureSTAIA, Mariana; PUCHI-CABRERA, Eli-Saul; SANTANA, Y.Y.; LA BARBERA-SOSA, J.G.; IOST, Alain; CHICOT, Didier; PEREZ DELGADO, Yeczain; DE BAETS, Patrick (2013)The present investigation has been conducted in order to evaluate the tribological behavior of an AA2024-T3 aluminum alloy, coated with a NiP-CrC-DLC coating. The effect of NiP as intermediate layer was evaluated by carrying ...
Mechanical characterization of a prototype a-C:Cr,Si and its tribological behavior at high temperature Article dans une revue avec comité de lectureSTAIA, Mariana; DUBAR, Laurent; DUBAR, Mirentxu; PUCHI-CABRERA, Eli-Saul; IOST, Alain; DE BAETS, Patrick; DUBOIS, André (Elsevier, 2016)The results of the mechanical and tribological characterization of a prototype a-C:Cr, Si sputtered coating are presented. The hardness and the elastic modulus of the coated system have been determined by means of ...
Article dans une revue avec comité de lectureKOSSMAN, Stephania; CHICOT, Didier; DECOOPMAN, Xavier; IOST, Alain; VAN GORP, Adrien; MEILLOT, E.; PUCHI-CABRERA, Eli-Saul; SANTANA, Y.Y.; STAIA, Mariana (ASM International/Springer, 2014)Nanostructured yttria-stabilized zirconia coatings for applications in high-temperature environments can be deposited by suspension plasma spraying (SPS) techniques. The present research has been conducted in order to study ...
Recubrimientos nanoestructurados de circonia estabilzada con itria (ysz) depositados mediante técnicas de termorrociado por plasma en suspensión Conférence invitéeSTAIA, Mariana; KOSSMAN, Stephania; CONTREPAS, V; CHICOT, Didier; IOST, Alain; VAN GORP, Adrien (VI Congreso Nacional de Pulvimetalurgia y I Congreso Iberoamericano de Pulvimetalurgia, 2017)Las propiedades de los recubrimientos a base de circonia estabilizada con ytria (YSZ) les confieren un excelente desempeño como barreras térmicas (TBC). En el presente trabajo, recubrimientos de 8YSZ fueron depositados ...
Communication avec acteSTAIA, Mariana; TROCELIS, A; ZAIRI, Amel; SUAREZ, M; PUCHI-CABRERA, Eli-Saul; IOST, Alain; MONTAGNE, Alex (2016)The present work has been conducted in order to assess the mechanical and tribological performance of a ZrN coating deposited onto a H13 steel substrate by means of a closed field unbalanced magnetron-sputtering ion-plating ...