Influence of a Micro-Arc Oxidation/Poly-Lactic Acid Composite Coating on Corrosion Resistance of Extruded Mg-2Zn-0.5Zr-1.5Dy (Mass%) Alloy
Micro-arc oxidation (MAO) coating can significantly slow down the repaid degradation rate of biodegradable magnesium alloy, but the porous characteristics of the coating cannot provide long-term protection to magnesium alloy. In this paper, poly-lactic acid (PLA) was used to seal the porous MAO coat...
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| Veröffentlicht in: | Solid state phenomena 2022-04, Vol.331, p.131-136 |
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| creator | Jin, Jie He, Jun Guang Li, Huan Liu, Ya Wen, Jiu Ba |
| description | Micro-arc oxidation (MAO) coating can significantly slow down the repaid degradation rate of biodegradable magnesium alloy, but the porous characteristics of the coating cannot provide long-term protection to magnesium alloy. In this paper, poly-lactic acid (PLA) was used to seal the porous MAO coating on the surface of extruded Mg-2Zn-0.5Zr-1.5Dy (mass%) magnesium alloy by a dipping coating method. Assessments were conducted by electrochemical experiment, immersion test, and hydrogen evolution experiment. The result shows that after the MAO-coated sample was dipped in PLA solution four times, the PLA could largely seal the porous and cracks of the MAO coating, and a dense MAO/PLA composite coating with a thickness of ~ 50 μm was prepared. The MAO/PLA composite coating provides good and stable protection to the alloy under 0~56 d immersion in the simulated body fluid than the single MAO coating, which shows an excellent application potential in the field of biodegradable magnesium alloy. |
| doi_str_mv | 10.4028/p-co799t |
| format | Article |
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In this paper, poly-lactic acid (PLA) was used to seal the porous MAO coating on the surface of extruded Mg-2Zn-0.5Zr-1.5Dy (mass%) magnesium alloy by a dipping coating method. Assessments were conducted by electrochemical experiment, immersion test, and hydrogen evolution experiment. The result shows that after the MAO-coated sample was dipped in PLA solution four times, the PLA could largely seal the porous and cracks of the MAO coating, and a dense MAO/PLA composite coating with a thickness of ~ 50 μm was prepared. The MAO/PLA composite coating provides good and stable protection to the alloy under 0~56 d immersion in the simulated body fluid than the single MAO coating, which shows an excellent application potential in the field of biodegradable magnesium alloy.</description><identifier>ISSN: 1012-0394</identifier><identifier>ISSN: 1662-9779</identifier><identifier>EISSN: 1662-9779</identifier><identifier>DOI: 10.4028/p-co799t</identifier><language>eng</language><publisher>Zurich: Trans Tech Publications Ltd</publisher><subject>Acid resistance ; Biomedical materials ; Body fluids ; Coating ; Corrosion resistance ; Extrusion rate ; Hydrogen evolution ; Immersion tests (corrosion) ; Magnesium alloys ; Magnesium base alloys ; Oxidation ; Oxidation resistance ; Polylactic acid</subject><ispartof>Solid state phenomena, 2022-04, Vol.331, p.131-136</ispartof><rights>2022 Trans Tech Publications Ltd</rights><rights>Copyright Trans Tech Publications Ltd. 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c96t-2f43081cba7e3f1e6ab322f15c72b31e87a2c6c9f2a1bf5070dd846a708345233</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttps://www.scientific.net/Image/TitleCover/6541?width=600</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Jin, Jie</creatorcontrib><creatorcontrib>He, Jun Guang</creatorcontrib><creatorcontrib>Li, Huan</creatorcontrib><creatorcontrib>Liu, Ya</creatorcontrib><creatorcontrib>Wen, Jiu Ba</creatorcontrib><title>Influence of a Micro-Arc Oxidation/Poly-Lactic Acid Composite Coating on Corrosion Resistance of Extruded Mg-2Zn-0.5Zr-1.5Dy (Mass%) Alloy</title><title>Solid state phenomena</title><description>Micro-arc oxidation (MAO) coating can significantly slow down the repaid degradation rate of biodegradable magnesium alloy, but the porous characteristics of the coating cannot provide long-term protection to magnesium alloy. 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In this paper, poly-lactic acid (PLA) was used to seal the porous MAO coating on the surface of extruded Mg-2Zn-0.5Zr-1.5Dy (mass%) magnesium alloy by a dipping coating method. Assessments were conducted by electrochemical experiment, immersion test, and hydrogen evolution experiment. The result shows that after the MAO-coated sample was dipped in PLA solution four times, the PLA could largely seal the porous and cracks of the MAO coating, and a dense MAO/PLA composite coating with a thickness of ~ 50 μm was prepared. The MAO/PLA composite coating provides good and stable protection to the alloy under 0~56 d immersion in the simulated body fluid than the single MAO coating, which shows an excellent application potential in the field of biodegradable magnesium alloy.</abstract><cop>Zurich</cop><pub>Trans Tech Publications Ltd</pub><doi>10.4028/p-co799t</doi><tpages>6</tpages></addata></record> |
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| subjects | Acid resistance Biomedical materials Body fluids Coating Corrosion resistance Extrusion rate Hydrogen evolution Immersion tests (corrosion) Magnesium alloys Magnesium base alloys Oxidation Oxidation resistance Polylactic acid |
| title | Influence of a Micro-Arc Oxidation/Poly-Lactic Acid Composite Coating on Corrosion Resistance of Extruded Mg-2Zn-0.5Zr-1.5Dy (Mass%) Alloy |
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