Performance of pulsed constant current silicate-based PEO coating on pure magnesium in simulated body fluid
In vitro degradation behaviour of a pulsed constant current silicate-based PEO coating on pure magnesium was studied using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarisation techniques. The PEO coating increased the polarisation resistance (Rp) of magnesium by an order of...
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| Veröffentlicht in: | Materials letters 2013-09, Vol.106, p.18-21 |
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| creator | Alabbasi, Alyaa Bobby Kannan, M. Walter, Rhys Störmer, M. Blawert, C. |
| description | In vitro degradation behaviour of a pulsed constant current silicate-based PEO coating on pure magnesium was studied using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarisation techniques. The PEO coating increased the polarisation resistance (Rp) of magnesium by an order of magnitude and reduced the corrosion current (icorr) by 65%. EIS modelling indicated that the inner compact layer resistance of the PEO coating was critical for the overall degradation resistance of the material. However, the breakdown potential from potentiodynamic polarisation curves and the post-degradation analysis suggested that the porous outer layer of the PEO coating played an important role in the stability of the inner compact layer.
•In vitro degradation of silicate-based PEO coating on magnesium was studied.•The coating showed high degradation resistance in simulated body fluid.•Inner compact layer played a significant role in the degradation resistance.•Outer porous layer stabilised the inner compact layer. |
| doi_str_mv | 10.1016/j.matlet.2013.04.047 |
| format | Article |
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•In vitro degradation of silicate-based PEO coating on magnesium was studied.•The coating showed high degradation resistance in simulated body fluid.•Inner compact layer played a significant role in the degradation resistance.•Outer porous layer stabilised the inner compact layer.</description><subject>Biomaterials</subject><subject>Breakdown</subject><subject>Coating</subject><subject>coatings</subject><subject>Constants</subject><subject>Corrosion</subject><subject>Degradation</subject><subject>dielectric spectroscopy</subject><subject>Electrochemical impedance spectroscopy</subject><subject>Magnesium</subject><subject>Plasma electrolytic oxidation</subject><subject>Stability</subject><issn>0167-577X</issn><issn>1873-4979</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNp9kE1rGzEQhkVpIa7bfxCojr2so6_Vei-BEpK2YLAhMfQmtNLIyNlduZI24H8fLdtzYWAO87wzzIPQLSUbSqi8O28GnXvIG0Yo3xBRqvmAVnTb8Eq0TfsRrQrWVHXT_LlBn1M6E0JES8QKvR4guhAHPRrAweHL1Cew2IQxZT1mbKYYofTke290hqrT8_zwuC-Mzn484TCWVAQ86NMIyU8D9mPhh6kvvMVdsFfs-snbL-iT02X91399jY5Pjy8Pv6rd_ufvhx-7ygjW5qqVUlupHefMSS7rujOGy62gdWMNdHXNHRPUCmi3jkhmwbIttdSRmumuK7E1-r7svcTwd4KU1eCTgb7XI4QpKSoFY6JlfEbFgpoYUorg1CX6QcerokTNbtVZLW7V7FYRUaopsW9LzOmg9Cn6pI7PBaiLVyY5n4n7hYDy6JuHqJLxUCRbH8FkZYP__4l3BG6PVg</recordid><startdate>20130901</startdate><enddate>20130901</enddate><creator>Alabbasi, Alyaa</creator><creator>Bobby Kannan, M.</creator><creator>Walter, Rhys</creator><creator>Störmer, M.</creator><creator>Blawert, C.</creator><general>Elsevier B.V</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SE</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20130901</creationdate><title>Performance of pulsed constant current silicate-based PEO coating on pure magnesium in simulated body fluid</title><author>Alabbasi, Alyaa ; Bobby Kannan, M. ; Walter, Rhys ; Störmer, M. ; Blawert, C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c429t-966ad6af332f63655bcc3684157dceb553f241d4e98f062ded281d1f052abbf33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Biomaterials</topic><topic>Breakdown</topic><topic>Coating</topic><topic>coatings</topic><topic>Constants</topic><topic>Corrosion</topic><topic>Degradation</topic><topic>dielectric spectroscopy</topic><topic>Electrochemical impedance spectroscopy</topic><topic>Magnesium</topic><topic>Plasma electrolytic oxidation</topic><topic>Stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Alabbasi, Alyaa</creatorcontrib><creatorcontrib>Bobby Kannan, M.</creatorcontrib><creatorcontrib>Walter, Rhys</creatorcontrib><creatorcontrib>Störmer, M.</creatorcontrib><creatorcontrib>Blawert, C.</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Alabbasi, Alyaa</au><au>Bobby Kannan, M.</au><au>Walter, Rhys</au><au>Störmer, M.</au><au>Blawert, C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Performance of pulsed constant current silicate-based PEO coating on pure magnesium in simulated body fluid</atitle><jtitle>Materials letters</jtitle><date>2013-09-01</date><risdate>2013</risdate><volume>106</volume><spage>18</spage><epage>21</epage><pages>18-21</pages><issn>0167-577X</issn><eissn>1873-4979</eissn><abstract>In vitro degradation behaviour of a pulsed constant current silicate-based PEO coating on pure magnesium was studied using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarisation techniques. The PEO coating increased the polarisation resistance (Rp) of magnesium by an order of magnitude and reduced the corrosion current (icorr) by 65%. EIS modelling indicated that the inner compact layer resistance of the PEO coating was critical for the overall degradation resistance of the material. However, the breakdown potential from potentiodynamic polarisation curves and the post-degradation analysis suggested that the porous outer layer of the PEO coating played an important role in the stability of the inner compact layer.
•In vitro degradation of silicate-based PEO coating on magnesium was studied.•The coating showed high degradation resistance in simulated body fluid.•Inner compact layer played a significant role in the degradation resistance.•Outer porous layer stabilised the inner compact layer.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.matlet.2013.04.047</doi><tpages>4</tpages></addata></record> |
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| ispartof | Materials letters, 2013-09, Vol.106, p.18-21 |
| issn | 0167-577X 1873-4979 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Biomaterials Breakdown Coating coatings Constants Corrosion Degradation dielectric spectroscopy Electrochemical impedance spectroscopy Magnesium Plasma electrolytic oxidation Stability |
| title | Performance of pulsed constant current silicate-based PEO coating on pure magnesium in simulated body fluid |
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