Structure and properties of different elements doped diamond-like carbon on micro-arc oxidation coated AZ31B Mg alloy
To further improve corrosion and wear protection of micro-arc oxidation (MAO) to magnesium (Mg) alloys, a pure diamond-like carbon (DLC), H-DLC, Si-DLC, and Cr-DLC film was deposited the MAO coated-Mg alloys using closed field unbalance magnetron sputtering system, respectively. The microstructure a...
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Veröffentlicht in: | Diamond and related materials 2020-06, Vol.106, p.107832, Article 107832 |
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creator | Ning, Chuang-Ming Cui, Xue-Jun Shang, Lun-Lin Zhang, Ying-Jun Zhang, Guang-An |
description | To further improve corrosion and wear protection of micro-arc oxidation (MAO) to magnesium (Mg) alloys, a pure diamond-like carbon (DLC), H-DLC, Si-DLC, and Cr-DLC film was deposited the MAO coated-Mg alloys using closed field unbalance magnetron sputtering system, respectively. The microstructure and properties of the coatings were investigated. Results indicated that DLC films cannot completely seal the surface micropores of MAO coatings but can reduce their number and pore size. The duplex MAO/DLC films significantly improved the tribological properties of the MAO coating. The MAO/Si/Si-DLC film showed the lowest friction coefficient (0.17) and wear rate (3.18 × 10−6 mm3/(m·N)). The electrochemical test results showed that the lowest corrosion current density (icorr)of the MAO/Si/H-DLC is 3.26 × 10−7 A/cm2 but the icorr of other duplex films is higher than that of the MAO (4.27 × 10−7 A/cm2) coated sample. This indicated that the H-DLC can enhance the anti-corrosion properties of the MAO coating on magnesium alloys. However, the NSS test results indicated that the long-term anti-corrosion properties of duplex H-DLC/MAO coating is not good as that of MAO coating due to the conductivity of the H-DLC.
[Display omitted]
•DLC, H-DLC, Si-DLC and Cr-DLC layer was deposited on MAO-coated Mg alloy.•The effect of doped element in DLC on corrosion and wear resistance was discussed.•The H-DLC layer improves the protection ability of the MAO coating to Mg alloy.•The failure mechanism of the coated Mg alloys was discussed. |
doi_str_mv | 10.1016/j.diamond.2020.107832 |
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[Display omitted]
•DLC, H-DLC, Si-DLC and Cr-DLC layer was deposited on MAO-coated Mg alloy.•The effect of doped element in DLC on corrosion and wear resistance was discussed.•The H-DLC layer improves the protection ability of the MAO coating to Mg alloy.•The failure mechanism of the coated Mg alloys was discussed.</description><identifier>ISSN: 0925-9635</identifier><identifier>EISSN: 1879-0062</identifier><identifier>DOI: 10.1016/j.diamond.2020.107832</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Alloy systems ; Anti-corrosion ; Chromium ; Coatings ; Coefficient of friction ; Corrosion ; Corrosion currents ; Corrosion prevention ; Corrosive wear ; Diamond-like carbon ; Diamond-like carbon films ; Magnesium alloy ; Magnesium base alloys ; Magnetic properties ; Magnetron sputtering ; Micro-arc oxidation ; Oxidation ; Pore size ; Porosity ; Silicon ; Tribology ; Wear ; Wear rate</subject><ispartof>Diamond and related materials, 2020-06, Vol.106, p.107832, Article 107832</ispartof><rights>2020 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jun 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-b2ba0b25fe304ec77cdf512a3b8f29899f34ca545941f4335832444ff6a516f33</citedby><cites>FETCH-LOGICAL-c337t-b2ba0b25fe304ec77cdf512a3b8f29899f34ca545941f4335832444ff6a516f33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.diamond.2020.107832$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Ning, Chuang-Ming</creatorcontrib><creatorcontrib>Cui, Xue-Jun</creatorcontrib><creatorcontrib>Shang, Lun-Lin</creatorcontrib><creatorcontrib>Zhang, Ying-Jun</creatorcontrib><creatorcontrib>Zhang, Guang-An</creatorcontrib><title>Structure and properties of different elements doped diamond-like carbon on micro-arc oxidation coated AZ31B Mg alloy</title><title>Diamond and related materials</title><description>To further improve corrosion and wear protection of micro-arc oxidation (MAO) to magnesium (Mg) alloys, a pure diamond-like carbon (DLC), H-DLC, Si-DLC, and Cr-DLC film was deposited the MAO coated-Mg alloys using closed field unbalance magnetron sputtering system, respectively. The microstructure and properties of the coatings were investigated. Results indicated that DLC films cannot completely seal the surface micropores of MAO coatings but can reduce their number and pore size. The duplex MAO/DLC films significantly improved the tribological properties of the MAO coating. The MAO/Si/Si-DLC film showed the lowest friction coefficient (0.17) and wear rate (3.18 × 10−6 mm3/(m·N)). The electrochemical test results showed that the lowest corrosion current density (icorr)of the MAO/Si/H-DLC is 3.26 × 10−7 A/cm2 but the icorr of other duplex films is higher than that of the MAO (4.27 × 10−7 A/cm2) coated sample. This indicated that the H-DLC can enhance the anti-corrosion properties of the MAO coating on magnesium alloys. However, the NSS test results indicated that the long-term anti-corrosion properties of duplex H-DLC/MAO coating is not good as that of MAO coating due to the conductivity of the H-DLC.
[Display omitted]
•DLC, H-DLC, Si-DLC and Cr-DLC layer was deposited on MAO-coated Mg alloy.•The effect of doped element in DLC on corrosion and wear resistance was discussed.•The H-DLC layer improves the protection ability of the MAO coating to Mg alloy.•The failure mechanism of the coated Mg alloys was discussed.</description><subject>Alloy systems</subject><subject>Anti-corrosion</subject><subject>Chromium</subject><subject>Coatings</subject><subject>Coefficient of friction</subject><subject>Corrosion</subject><subject>Corrosion currents</subject><subject>Corrosion prevention</subject><subject>Corrosive wear</subject><subject>Diamond-like carbon</subject><subject>Diamond-like carbon films</subject><subject>Magnesium alloy</subject><subject>Magnesium base alloys</subject><subject>Magnetic properties</subject><subject>Magnetron sputtering</subject><subject>Micro-arc oxidation</subject><subject>Oxidation</subject><subject>Pore size</subject><subject>Porosity</subject><subject>Silicon</subject><subject>Tribology</subject><subject>Wear</subject><subject>Wear rate</subject><issn>0925-9635</issn><issn>1879-0062</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkMtKLDEQhoMoOF4eQQi47jHX7slKVDxHQXGhbtyEdFKRjD2dMUmLvr0ZZvZCQUFV_VX1_QidUTKnhLYXy7kLZhVHN2eEbWrdgrM9NKOLTjWEtGwfzYhislEtl4foKOclIZQpQWdoei5psmVKgM3o8DrFNaQSIOPosQveQ4KxYBhgVXPGrvYd3t1rhvAB2JrUxxHXWAWbYmOSxfE7OFNCrdloSlVcvXF6jR_fsRmG-HOCDrwZMpzu8jF6_Xf7cnPXPDz9v7-5emgs511petYb0jPpgRMBtuus85Iyw_uFZ2qhlOfCGilkRfGCc1m5hRDet0bS1nN-jM63eyvX5wS56GWc0lhPaiZ4p7pWSlWn5Haqfp9zAq_XKaxM-tGU6I3Deql3xHrjsN46XHWXWx1UhK8ASWcbYLTgQgJbtIvhjw2_pZSHTw</recordid><startdate>202006</startdate><enddate>202006</enddate><creator>Ning, Chuang-Ming</creator><creator>Cui, Xue-Jun</creator><creator>Shang, Lun-Lin</creator><creator>Zhang, Ying-Jun</creator><creator>Zhang, Guang-An</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>202006</creationdate><title>Structure and properties of different elements doped diamond-like carbon on micro-arc oxidation coated AZ31B Mg alloy</title><author>Ning, Chuang-Ming ; Cui, Xue-Jun ; Shang, Lun-Lin ; Zhang, Ying-Jun ; Zhang, Guang-An</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-b2ba0b25fe304ec77cdf512a3b8f29899f34ca545941f4335832444ff6a516f33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Alloy systems</topic><topic>Anti-corrosion</topic><topic>Chromium</topic><topic>Coatings</topic><topic>Coefficient of friction</topic><topic>Corrosion</topic><topic>Corrosion currents</topic><topic>Corrosion prevention</topic><topic>Corrosive wear</topic><topic>Diamond-like carbon</topic><topic>Diamond-like carbon films</topic><topic>Magnesium alloy</topic><topic>Magnesium base alloys</topic><topic>Magnetic properties</topic><topic>Magnetron sputtering</topic><topic>Micro-arc oxidation</topic><topic>Oxidation</topic><topic>Pore size</topic><topic>Porosity</topic><topic>Silicon</topic><topic>Tribology</topic><topic>Wear</topic><topic>Wear rate</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ning, Chuang-Ming</creatorcontrib><creatorcontrib>Cui, Xue-Jun</creatorcontrib><creatorcontrib>Shang, Lun-Lin</creatorcontrib><creatorcontrib>Zhang, Ying-Jun</creatorcontrib><creatorcontrib>Zhang, Guang-An</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Diamond and related materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ning, Chuang-Ming</au><au>Cui, Xue-Jun</au><au>Shang, Lun-Lin</au><au>Zhang, Ying-Jun</au><au>Zhang, Guang-An</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structure and properties of different elements doped diamond-like carbon on micro-arc oxidation coated AZ31B Mg alloy</atitle><jtitle>Diamond and related materials</jtitle><date>2020-06</date><risdate>2020</risdate><volume>106</volume><spage>107832</spage><pages>107832-</pages><artnum>107832</artnum><issn>0925-9635</issn><eissn>1879-0062</eissn><abstract>To further improve corrosion and wear protection of micro-arc oxidation (MAO) to magnesium (Mg) alloys, a pure diamond-like carbon (DLC), H-DLC, Si-DLC, and Cr-DLC film was deposited the MAO coated-Mg alloys using closed field unbalance magnetron sputtering system, respectively. The microstructure and properties of the coatings were investigated. Results indicated that DLC films cannot completely seal the surface micropores of MAO coatings but can reduce their number and pore size. The duplex MAO/DLC films significantly improved the tribological properties of the MAO coating. The MAO/Si/Si-DLC film showed the lowest friction coefficient (0.17) and wear rate (3.18 × 10−6 mm3/(m·N)). The electrochemical test results showed that the lowest corrosion current density (icorr)of the MAO/Si/H-DLC is 3.26 × 10−7 A/cm2 but the icorr of other duplex films is higher than that of the MAO (4.27 × 10−7 A/cm2) coated sample. This indicated that the H-DLC can enhance the anti-corrosion properties of the MAO coating on magnesium alloys. However, the NSS test results indicated that the long-term anti-corrosion properties of duplex H-DLC/MAO coating is not good as that of MAO coating due to the conductivity of the H-DLC.
[Display omitted]
•DLC, H-DLC, Si-DLC and Cr-DLC layer was deposited on MAO-coated Mg alloy.•The effect of doped element in DLC on corrosion and wear resistance was discussed.•The H-DLC layer improves the protection ability of the MAO coating to Mg alloy.•The failure mechanism of the coated Mg alloys was discussed.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.diamond.2020.107832</doi></addata></record> |
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subjects | Alloy systems Anti-corrosion Chromium Coatings Coefficient of friction Corrosion Corrosion currents Corrosion prevention Corrosive wear Diamond-like carbon Diamond-like carbon films Magnesium alloy Magnesium base alloys Magnetic properties Magnetron sputtering Micro-arc oxidation Oxidation Pore size Porosity Silicon Tribology Wear Wear rate |
title | Structure and properties of different elements doped diamond-like carbon on micro-arc oxidation coated AZ31B Mg alloy |
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