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dc.contributor.authorGuerrero-Vaca, G.
dc.contributor.authorCarrizo Tejero, David
dc.contributor.authorRodríguez-Alabanda, O.
dc.contributor.authorRomero, Pablo E.
dc.contributor.authorMolero, Esther
dc.date.accessioned2020-02-10T11:39:21Z
dc.date.available2020-02-10T11:39:21Z
dc.date.issued2020
dc.identifier.urihttp://hdl.handle.net/10396/19511
dc.description.abstractPolytetrafluoroethylene (PTFE) coatings are used in many applications and processing industries. With their use, they wear out and lose properties and must be replaced by new ones if the cost of the element so advises. There are different stripping techniques, but almost all of them are very difficult and require strict environmental controls. It is a challenge to approach the process through efficient and more sustainable techniques. In the present work, we have studied the stripping of PTFE coatings by projection with abrasives (1 step) as an alternative to carbonization + sandblasting procedures (2 steps). For this purpose, different types of abrasives have been selected: brown corundum, white corundum, glass microspheres, plastic particles, and a walnut shell. The tests were performed at pressures from 0.4 to 0.6 MPa on PTFE-coated aluminium substrates of EN AW-5182 H111 alloy. Stripping rates, surface roughness, and substrate hardness have been studied. Scanning electron microscopy (SEM) images of sandblasted specimens have also been obtained. All abrasives improved mechanical and surface properties in one-step vs. two-step processes. The abrasives of plastic and glass microspheres are the most appropriate for the one-step process, which increases the hardness and roughness level Ra in the substrate. Corundum abrasives enable the highest stripping rates.es_ES
dc.format.mimetypeapplication/pdfes_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/4.0/es_ES
dc.sourceMaterials 13(3), 799 (2020)es_ES
dc.subjectStrippinges_ES
dc.subjectAbrasiveses_ES
dc.subjectPTFE coatinges_ES
dc.subjectFluoropolymer coatinges_ES
dc.subjectCorundumes_ES
dc.subjectGlass microsphereses_ES
dc.subjectPlastic particleses_ES
dc.subjectWalnut shelles_ES
dc.titleExperimental Study for the Stripping of PTFE Coatings on Al-Mg Substrates Using Dry Abrasive Materialses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttp://dx.doi.org/10.3390/ma13030799es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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