Novel hybrid facing targets sputtered amorphous carbon overcoat for ultra-high density hard disk media
Amorphous carbon films form a critical protective layer on magnetic hard disk media. A novel in-house configured hybrid facing targets sputtering (HyFTS) utilizing a special magnetron arrangement was used to deposit amorphous carbon (a-C) overcoats. The corrosion inhibition ability and mechanical pr...
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| Veröffentlicht in: | Diamond and related materials 2007-02, Vol.16 (2), p.379-387 |
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| container_issue | 2 |
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| container_title | Diamond and related materials |
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| creator | Poh, W.C. Piramanayagam, S.N. Shi, J.R. Liew, T. |
| description | Amorphous carbon films form a critical protective layer on magnetic hard disk media. A novel in-house configured
hybrid facing targets sputtering (HyFTS) utilizing a special magnetron arrangement was used to deposit amorphous carbon (a-C) overcoats. The corrosion inhibition ability and mechanical property were investigated and compared with that of the a-C overcoats deposited by conventional magnetron sputtering (CMS). Studies were done using electrochemical techniques and nano-scratch analysis to determine how corrosion inhibition ability changes at thickness of 2 nm and 5 nm and the scratch resistance of the two types of a-C overcoats, respectively. Electrochemical impedance spectroscopy and potentiodynamic polarization investigations have shown that a-C films deposited by HyFTS have good corrosion resistance even at 2 nm thickness. But at 2 nm, CMS deposited a-C overcoat shows sign of corrosion. Nano-scratch test has also shown improved scratch resistance of the HyFTS deposited a-C. This may be attributed to the better quality film with higher sp
3 content deposited by HyFTS as a result of it having a higher amount of ionized species generated. |
| doi_str_mv | 10.1016/j.diamond.2006.07.020 |
| format | Article |
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hybrid facing targets sputtering (HyFTS) utilizing a special magnetron arrangement was used to deposit amorphous carbon (a-C) overcoats. The corrosion inhibition ability and mechanical property were investigated and compared with that of the a-C overcoats deposited by conventional magnetron sputtering (CMS). Studies were done using electrochemical techniques and nano-scratch analysis to determine how corrosion inhibition ability changes at thickness of 2 nm and 5 nm and the scratch resistance of the two types of a-C overcoats, respectively. Electrochemical impedance spectroscopy and potentiodynamic polarization investigations have shown that a-C films deposited by HyFTS have good corrosion resistance even at 2 nm thickness. But at 2 nm, CMS deposited a-C overcoat shows sign of corrosion. Nano-scratch test has also shown improved scratch resistance of the HyFTS deposited a-C. This may be attributed to the better quality film with higher sp
3 content deposited by HyFTS as a result of it having a higher amount of ionized species generated.</description><subject>Amorphous carbon</subject><subject>Coatings</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Corrosion</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Deposition by sputtering</subject><subject>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</subject><subject>Exact sciences and technology</subject><subject>Materials science</subject><subject>Mechanical and acoustical properties</subject><subject>Methods of deposition of films and coatings; film growth and epitaxy</subject><subject>Physical properties of thin films, nonelectronic</subject><subject>Physics</subject><subject>Sputtering</subject><subject>Surface and interface electron states</subject><subject>Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)</subject><issn>0925-9635</issn><issn>1879-0062</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkEFr3DAQhUVoIds0P6GgS3uzI1m2ZZ9CCUkbCMklOYuRNFpr67U2kjaw_74Ku5BjTgPDezPvfYT84KzmjPdXm9p62IbF1g1jfc1kzRp2RlZ8kGNVNs0XsmJj01VjL7pz8i2lDWO8GVu-Iu4xvOFMp4OO3lIHxi9rmiGuMSeadvucMaKl5XzcTWGfqIGow0KLK5oAmboQ6X7OEarJrydqcUk-H-gE0VLr0z-6xZLuO_nqYE54eZoX5OXu9vnmb_Xw9Of-5vdDZYRkueoc50JDLxmC0E0LzkrdcwsjH7SQFqEftNO2GbhgfGhFK8QosZVtSa5BiAvy63h3F8PrHlNWW58MzjMsWNKrUrorPl6E3VFoYkgpolO76LcQD4oz9U5VbdSJqnqnqphUhWrx_Tw9gGRgdhEW49OHeWhHLsa26K6POixt3zxGlYzHxRQYEU1WNvhPPv0H9a-SJA</recordid><startdate>20070201</startdate><enddate>20070201</enddate><creator>Poh, W.C.</creator><creator>Piramanayagam, S.N.</creator><creator>Shi, J.R.</creator><creator>Liew, T.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SE</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20070201</creationdate><title>Novel hybrid facing targets sputtered amorphous carbon overcoat for ultra-high density hard disk media</title><author>Poh, W.C. ; Piramanayagam, S.N. ; Shi, J.R. ; Liew, T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c370t-5f113ba670ea3b24afd7b61da918b37dea68bfbd28130184343397e474facba33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Amorphous carbon</topic><topic>Coatings</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Corrosion</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Deposition by sputtering</topic><topic>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</topic><topic>Exact sciences and technology</topic><topic>Materials science</topic><topic>Mechanical and acoustical properties</topic><topic>Methods of deposition of films and coatings; film growth and epitaxy</topic><topic>Physical properties of thin films, nonelectronic</topic><topic>Physics</topic><topic>Sputtering</topic><topic>Surface and interface electron states</topic><topic>Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Poh, W.C.</creatorcontrib><creatorcontrib>Piramanayagam, S.N.</creatorcontrib><creatorcontrib>Shi, J.R.</creatorcontrib><creatorcontrib>Liew, T.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Corrosion Abstracts</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>Poh, W.C.</au><au>Piramanayagam, S.N.</au><au>Shi, J.R.</au><au>Liew, T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Novel hybrid facing targets sputtered amorphous carbon overcoat for ultra-high density hard disk media</atitle><jtitle>Diamond and related materials</jtitle><date>2007-02-01</date><risdate>2007</risdate><volume>16</volume><issue>2</issue><spage>379</spage><epage>387</epage><pages>379-387</pages><issn>0925-9635</issn><eissn>1879-0062</eissn><abstract>Amorphous carbon films form a critical protective layer on magnetic hard disk media. A novel in-house configured
hybrid facing targets sputtering (HyFTS) utilizing a special magnetron arrangement was used to deposit amorphous carbon (a-C) overcoats. The corrosion inhibition ability and mechanical property were investigated and compared with that of the a-C overcoats deposited by conventional magnetron sputtering (CMS). Studies were done using electrochemical techniques and nano-scratch analysis to determine how corrosion inhibition ability changes at thickness of 2 nm and 5 nm and the scratch resistance of the two types of a-C overcoats, respectively. Electrochemical impedance spectroscopy and potentiodynamic polarization investigations have shown that a-C films deposited by HyFTS have good corrosion resistance even at 2 nm thickness. But at 2 nm, CMS deposited a-C overcoat shows sign of corrosion. Nano-scratch test has also shown improved scratch resistance of the HyFTS deposited a-C. This may be attributed to the better quality film with higher sp
3 content deposited by HyFTS as a result of it having a higher amount of ionized species generated.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.diamond.2006.07.020</doi><tpages>9</tpages></addata></record> |
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| subjects | Amorphous carbon Coatings Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Corrosion Cross-disciplinary physics: materials science rheology Deposition by sputtering Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Exact sciences and technology Materials science Mechanical and acoustical properties Methods of deposition of films and coatings film growth and epitaxy Physical properties of thin films, nonelectronic Physics Sputtering Surface and interface electron states Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) |
| title | Novel hybrid facing targets sputtered amorphous carbon overcoat for ultra-high density hard disk media |
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