{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T14:34:12Z","timestamp":1777473252725,"version":"3.51.4"},"reference-count":67,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2020,12,17]],"date-time":"2020-12-17T00:00:00Z","timestamp":1608163200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["PT\/BD\/128477\/2017"],"award-info":[{"award-number":["PT\/BD\/128477\/2017"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["02\/SAICT\/2017"],"award-info":[{"award-number":["02\/SAICT\/2017"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008530","name":"European Regional Development Fund","doi-asserted-by":"publisher","award":["COMPETE \u2013 Programa Operacional Factores de Competitividade"],"award-info":[{"award-number":["COMPETE \u2013 Programa Operacional Factores de Competitividade"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Coatings"],"abstract":"<jats:p>This paper reports a simple and cost-effective procedure to coat hydrogenated nitrile butadiene rubber (HNBR) with a well-adherent Ni-P film by using the electroless plating method. A HNBR surface functionalization process was first optimized, creating an interpenetrating network with polyvinylpyrrolidone (PVP). Silver nanoparticles were deposited on PVP and acted as catalysts for the Ni-P film deposition, eliminating the expensive tin-palladium sensitization\/activation step. A homogeneous, low phosphorous Ni-P film was obtained after 60\u2013120 min of plating in an alkaline bath, with an average thickness of 3 to 10 \u00b5m, respectively. The PVP internetwork played an important role on the strong adhesion of the film, 1.0 \u00b1 0.5 MPa. The tribological behavior of Ni-P-plated HNBR samples was studied for 1, 5 and 10 N applied loads under dry sliding on a pin-on-disc configuration and the coefficient of friction (CoF) was reduced by ~30\u201349%, compared to uncoated HNBR (loads 1\u20135N). Based on these results, Ni-P-coated rubber can be regarded as a novel solution for enhancement of the tribological behavior of dynamic seals; it can be regarded as a means to avoid machinery failure. This method offers an alternative to the diamond-like carbon (DLC) coatings.<\/jats:p>","DOI":"10.3390\/coatings10121237","type":"journal-article","created":{"date-parts":[[2020,12,17]],"date-time":"2020-12-17T10:42:47Z","timestamp":1608201767000},"page":"1237","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Electroless Deposition of Ni-P Coatings on HNBR for Low Friction Rubber Seals"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1206-3354","authenticated-orcid":false,"given":"Beatriz","family":"Vasconcelos","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, University of Coimbra, CEMMPRE, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"},{"name":"Department of Metallurgical and Materials Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s\/n, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9138-4243","authenticated-orcid":false,"given":"Ricardo","family":"Serra","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University of Coimbra, CEMMPRE, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6218-3098","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University of Coimbra, CEMMPRE, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"}]},{"given":"Carlos","family":"Fonseca","sequence":"additional","affiliation":[{"name":"Department of Metallurgical and Materials Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s\/n, 4200-465 Porto, Portugal"},{"name":"LAETA\/INEGI-Institute of Science and Innovation in Mechanical and Industrial Engineering, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,12,17]]},"reference":[{"key":"ref_1","unstructured":"Affonso, L.O.A. 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