Effect of potassium permanganate on corrosion and wear properties of ceramic coatings manufactured on CP-aluminum by plasma electrolytic oxidation

Ceramic coatings were produced on the surface of commercially pure (CP) aluminum using plasma electrolytic oxidation in electrolyte solutions containing potassium permanganate. Morphology, microstructure, chemical composition and microhardness of the coatings were studied in different conditions. Th...

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Veröffentlicht in:Surface & coatings technology 2018-07, Vol.346, p.63-72
Hauptverfasser: Shamsi, F., Khorasanian, M., Lari Baghal, S.M.
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description Ceramic coatings were produced on the surface of commercially pure (CP) aluminum using plasma electrolytic oxidation in electrolyte solutions containing potassium permanganate. Morphology, microstructure, chemical composition and microhardness of the coatings were studied in different conditions. The effects of potassium permanganate concentration on the corrosion and wear behavior of the coatings were also investigated. The phase analysis indicated that the ceramic coatings composed of Al2O3, MnO, Mn3O4, and Mn2O3. Additions of potassium permanganate to the electrolyte lead to some new findings. The applied voltages and currents of the PEO process had lowered significantly. It had a beneficial in-situ sealing effect on the porous coatings. The corrosion and wear properties of the coatings were improved significantly by addition of potassium permanganate. Variation of the concentration of potassium permanganate changed the thickness and smoothness of the surfaces. Result indicated that formation of PEO coatings on pure aluminum has improved its corrosion resistance. Increasing the concentration of potassium permanganate resulted in high thickness and uniform microstructure coatings, caused the corrosion resistance of the samples to be increased. Creating a ceramic coating on the surface of pure aluminum increased its hardness and wear resistance and reduced the friction coefficient. •KMnO4 could lower the applied voltage and current of PEO on aluminum.•KMnO4 is used for in-situ sealing of pores and discharge channels in PEO coating.•KMnO4 increases the corrosion and wear resistance of PEO coatings considerably.
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Morphology, microstructure, chemical composition and microhardness of the coatings were studied in different conditions. The effects of potassium permanganate concentration on the corrosion and wear behavior of the coatings were also investigated. The phase analysis indicated that the ceramic coatings composed of Al2O3, MnO, Mn3O4, and Mn2O3. Additions of potassium permanganate to the electrolyte lead to some new findings. The applied voltages and currents of the PEO process had lowered significantly. It had a beneficial in-situ sealing effect on the porous coatings. The corrosion and wear properties of the coatings were improved significantly by addition of potassium permanganate. Variation of the concentration of potassium permanganate changed the thickness and smoothness of the surfaces. Result indicated that formation of PEO coatings on pure aluminum has improved its corrosion resistance. Increasing the concentration of potassium permanganate resulted in high thickness and uniform microstructure coatings, caused the corrosion resistance of the samples to be increased. Creating a ceramic coating on the surface of pure aluminum increased its hardness and wear resistance and reduced the friction coefficient. •KMnO4 could lower the applied voltage and current of PEO on aluminum.•KMnO4 is used for in-situ sealing of pores and discharge channels in PEO coating.•KMnO4 increases the corrosion and wear resistance of PEO coatings considerably.</description><identifier>ISSN: 0257-8972</identifier><identifier>EISSN: 1879-3347</identifier><identifier>DOI: 10.1016/j.surfcoat.2018.04.050</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Aluminum ; Aluminum oxide ; Ceramic coatings ; Ceramic glazes ; Ceramic matrix composites ; Ceramics ; Chemical composition ; Coating effects ; Coefficient of friction ; Corrosion ; Corrosion effects ; Corrosion potential ; Corrosion resistance ; Corrosive wear ; CP aluminum ; Friction reduction ; Friction resistance ; Manganese oxides ; Microhardness ; Microstructure ; Morphology ; Organic chemistry ; Oxidation ; Plasma electrolytic oxidation (PEO) ; Plasma physics ; Potassium ; Potassium permanganate ; Protective coatings ; Smoothness ; Thickness ; Wear ; Wear resistance</subject><ispartof>Surface &amp; coatings technology, 2018-07, Vol.346, p.63-72</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jul 25, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c406t-2f64716353d53be4195af6649f3ef34da5dec0227cc23d1380f36ad10ebb49ef3</citedby><cites>FETCH-LOGICAL-c406t-2f64716353d53be4195af6649f3ef34da5dec0227cc23d1380f36ad10ebb49ef3</cites><orcidid>0000-0002-1022-3000</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.surfcoat.2018.04.050$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids></links><search><creatorcontrib>Shamsi, F.</creatorcontrib><creatorcontrib>Khorasanian, M.</creatorcontrib><creatorcontrib>Lari Baghal, S.M.</creatorcontrib><title>Effect of potassium permanganate on corrosion and wear properties of ceramic coatings manufactured on CP-aluminum by plasma electrolytic oxidation</title><title>Surface &amp; coatings technology</title><description>Ceramic coatings were produced on the surface of commercially pure (CP) aluminum using plasma electrolytic oxidation in electrolyte solutions containing potassium permanganate. 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Creating a ceramic coating on the surface of pure aluminum increased its hardness and wear resistance and reduced the friction coefficient. •KMnO4 could lower the applied voltage and current of PEO on aluminum.•KMnO4 is used for in-situ sealing of pores and discharge channels in PEO coating.•KMnO4 increases the corrosion and wear resistance of PEO coatings considerably.</description><subject>Aluminum</subject><subject>Aluminum oxide</subject><subject>Ceramic coatings</subject><subject>Ceramic glazes</subject><subject>Ceramic matrix composites</subject><subject>Ceramics</subject><subject>Chemical composition</subject><subject>Coating effects</subject><subject>Coefficient of friction</subject><subject>Corrosion</subject><subject>Corrosion effects</subject><subject>Corrosion potential</subject><subject>Corrosion resistance</subject><subject>Corrosive wear</subject><subject>CP aluminum</subject><subject>Friction reduction</subject><subject>Friction resistance</subject><subject>Manganese oxides</subject><subject>Microhardness</subject><subject>Microstructure</subject><subject>Morphology</subject><subject>Organic chemistry</subject><subject>Oxidation</subject><subject>Plasma electrolytic oxidation (PEO)</subject><subject>Plasma physics</subject><subject>Potassium</subject><subject>Potassium permanganate</subject><subject>Protective coatings</subject><subject>Smoothness</subject><subject>Thickness</subject><subject>Wear</subject><subject>Wear resistance</subject><issn>0257-8972</issn><issn>1879-3347</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqFkMGO1DAQRCMEEsPCLyBLnBPasePEN9BoWZBWWg5wtjx2e-VRYgfbAeY3-GIcDZz31H2oV91VTfOWQkeBivfnLm_JmahL1wOdOuAdDPCsOdBplC1jfHzeHKAfxnaSY_-yeZXzGQDoKPmh-XPrHJpCoiNrLDpnvy1kxbTo8KiDLkhiICamFLOvmw6W_EKdyJpiVRWPeUcNJr14Q_YnfHjMpOKb06ZsCe3ucPza6nlbfKjupwtZZ50XTXCup1OcL6Wy8be3lY7hdfPC6Tnjm3_zpvn-6fbb8XN7_3D35fjxvjUcRGl7J_hIBRuYHdgJOZWDdkJw6Rg6xq0eLBro-9GYnlnKJnBMaEsBTycuq-SmeXf1rVl-bJiLOscthXpS9SAlcDlMoqrEVWVqBTmhU2vyi04XRUHt_auz-t-_2vtXwFXtv4IfriDWDD89JpWNx2DQ-lRjKxv9UxZ_AX66llQ</recordid><startdate>20180725</startdate><enddate>20180725</enddate><creator>Shamsi, F.</creator><creator>Khorasanian, M.</creator><creator>Lari Baghal, S.M.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0002-1022-3000</orcidid></search><sort><creationdate>20180725</creationdate><title>Effect of potassium permanganate on corrosion and wear properties of ceramic coatings manufactured on CP-aluminum by plasma electrolytic oxidation</title><author>Shamsi, F. ; 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coatings technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shamsi, F.</au><au>Khorasanian, M.</au><au>Lari Baghal, S.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of potassium permanganate on corrosion and wear properties of ceramic coatings manufactured on CP-aluminum by plasma electrolytic oxidation</atitle><jtitle>Surface &amp; coatings technology</jtitle><date>2018-07-25</date><risdate>2018</risdate><volume>346</volume><spage>63</spage><epage>72</epage><pages>63-72</pages><issn>0257-8972</issn><eissn>1879-3347</eissn><abstract>Ceramic coatings were produced on the surface of commercially pure (CP) aluminum using plasma electrolytic oxidation in electrolyte solutions containing potassium permanganate. 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source ScienceDirect Journals (5 years ago - present)
subjects Aluminum
Aluminum oxide
Ceramic coatings
Ceramic glazes
Ceramic matrix composites
Ceramics
Chemical composition
Coating effects
Coefficient of friction
Corrosion
Corrosion effects
Corrosion potential
Corrosion resistance
Corrosive wear
CP aluminum
Friction reduction
Friction resistance
Manganese oxides
Microhardness
Microstructure
Morphology
Organic chemistry
Oxidation
Plasma electrolytic oxidation (PEO)
Plasma physics
Potassium
Potassium permanganate
Protective coatings
Smoothness
Thickness
Wear
Wear resistance
title Effect of potassium permanganate on corrosion and wear properties of ceramic coatings manufactured on CP-aluminum by plasma electrolytic oxidation
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