Improving the packing density of calcium phosphate coating on a magnesium alloy for enhanced degradation resistance
In this study, an attempt was made to improve the packing density of calcium phosphate (CaP) coating on a magnesium alloy by tailoring the coating solution for enhanced degradation resistance of the alloy for implant applications. An organic solvent, ethanol, was added to the coating solution to dec...
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| Veröffentlicht in: | Journal of biomedical materials research. Part A 2013-05, Vol.101A (5), p.1248-1254 |
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| container_title | Journal of biomedical materials research. Part A |
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| creator | Kannan, M. Bobby |
| description | In this study, an attempt was made to improve the packing density of calcium phosphate (CaP) coating on a magnesium alloy by tailoring the coating solution for enhanced degradation resistance of the alloy for implant applications. An organic solvent, ethanol, was added to the coating solution to decrease the conductivity of the coating solution so that hydrogen bubble formation/bursting reduces during the CaP coating process. Experimental results confirmed that ethanol addition to the coating solution reduces the conductivity of the solution and also decreases the hydrogen evolution/bubble bursting. In vitro electrochemical experiments, that is, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization showed that CaP coating produced in 30% (v/v) ethanol containing coating solution (3E) exhibits significantly higher degradation resistance (i.e., ∼50% higher polarization resistance and ∼60% lower corrosion current) than the aqueous solution coating. Scanning electron microscope (SEM) analysis of the coatings revealed that the packing of 3E coating was denser than that of aqueous coating, which can be attributed to the lower hydrogen evolution in the former than in the latter. Further increase in the ethanol content in the coating solution was not beneficial; in fact, the coating produced in 70% (v/v) ethanol containing solution (7E) showed degradation resistance much inferior to that of the aqueous coating, which is due to low thickness of 7E coating. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2013. |
| doi_str_mv | 10.1002/jbm.a.34423 |
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Bobby</creator><creatorcontrib>Kannan, M. Bobby</creatorcontrib><description>In this study, an attempt was made to improve the packing density of calcium phosphate (CaP) coating on a magnesium alloy by tailoring the coating solution for enhanced degradation resistance of the alloy for implant applications. An organic solvent, ethanol, was added to the coating solution to decrease the conductivity of the coating solution so that hydrogen bubble formation/bursting reduces during the CaP coating process. Experimental results confirmed that ethanol addition to the coating solution reduces the conductivity of the solution and also decreases the hydrogen evolution/bubble bursting. In vitro electrochemical experiments, that is, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization showed that CaP coating produced in 30% (v/v) ethanol containing coating solution (3E) exhibits significantly higher degradation resistance (i.e., ∼50% higher polarization resistance and ∼60% lower corrosion current) than the aqueous solution coating. Scanning electron microscope (SEM) analysis of the coatings revealed that the packing of 3E coating was denser than that of aqueous coating, which can be attributed to the lower hydrogen evolution in the former than in the latter. Further increase in the ethanol content in the coating solution was not beneficial; in fact, the coating produced in 70% (v/v) ethanol containing solution (7E) showed degradation resistance much inferior to that of the aqueous coating, which is due to low thickness of 7E coating. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2013.</description><identifier>ISSN: 1549-3296</identifier><identifier>EISSN: 1552-4965</identifier><identifier>DOI: 10.1002/jbm.a.34423</identifier><identifier>PMID: 23008190</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Alloys - chemistry ; Biological and medical sciences ; Calcium phosphate ; Calcium Phosphates - chemistry ; Coated Materials, Biocompatible - chemistry ; Coating ; Corrosion ; Degradation ; Dielectric Spectroscopy ; Electric Conductivity ; Electrochemical impedance spectroscopy ; Electrochemical Techniques ; electrochemistry ; Ethanol ; Ethanol - chemistry ; Ethyl alcohol ; magnesium ; Magnesium - chemistry ; Materials Testing ; Medical sciences ; Polarization ; Prostheses and Implants ; Scanning electron microscopy ; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases ; Surgical implants ; Technology. Biomaterials. Equipments</subject><ispartof>Journal of biomedical materials research. 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Bobby</creatorcontrib><title>Improving the packing density of calcium phosphate coating on a magnesium alloy for enhanced degradation resistance</title><title>Journal of biomedical materials research. Part A</title><addtitle>J. Biomed. Mater. Res</addtitle><description>In this study, an attempt was made to improve the packing density of calcium phosphate (CaP) coating on a magnesium alloy by tailoring the coating solution for enhanced degradation resistance of the alloy for implant applications. An organic solvent, ethanol, was added to the coating solution to decrease the conductivity of the coating solution so that hydrogen bubble formation/bursting reduces during the CaP coating process. Experimental results confirmed that ethanol addition to the coating solution reduces the conductivity of the solution and also decreases the hydrogen evolution/bubble bursting. In vitro electrochemical experiments, that is, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization showed that CaP coating produced in 30% (v/v) ethanol containing coating solution (3E) exhibits significantly higher degradation resistance (i.e., ∼50% higher polarization resistance and ∼60% lower corrosion current) than the aqueous solution coating. Scanning electron microscope (SEM) analysis of the coatings revealed that the packing of 3E coating was denser than that of aqueous coating, which can be attributed to the lower hydrogen evolution in the former than in the latter. Further increase in the ethanol content in the coating solution was not beneficial; in fact, the coating produced in 70% (v/v) ethanol containing solution (7E) showed degradation resistance much inferior to that of the aqueous coating, which is due to low thickness of 7E coating. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2013.</description><subject>Alloys - chemistry</subject><subject>Biological and medical sciences</subject><subject>Calcium phosphate</subject><subject>Calcium Phosphates - chemistry</subject><subject>Coated Materials, Biocompatible - chemistry</subject><subject>Coating</subject><subject>Corrosion</subject><subject>Degradation</subject><subject>Dielectric Spectroscopy</subject><subject>Electric Conductivity</subject><subject>Electrochemical impedance spectroscopy</subject><subject>Electrochemical Techniques</subject><subject>electrochemistry</subject><subject>Ethanol</subject><subject>Ethanol - chemistry</subject><subject>Ethyl alcohol</subject><subject>magnesium</subject><subject>Magnesium - chemistry</subject><subject>Materials Testing</subject><subject>Medical sciences</subject><subject>Polarization</subject><subject>Prostheses and Implants</subject><subject>Scanning electron microscopy</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><subject>Surgical implants</subject><subject>Technology. Biomaterials. Equipments</subject><issn>1549-3296</issn><issn>1552-4965</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqN0UFv0zAUB3ALgdhWOHFHviAhTSm2X2InR1axMdjgAoKb9eLYbbYkDnYK9Nvj0G7cgJMt6-f37Pcn5BlnS86YeHVT90tcQp4LeECOeVGILK9k8XDe51UGopJH5CTGm4QlK8RjciSAsZJX7JjEy34M_ns7rOm0sXREczvvGzvEdtpR76jBzrTbno4bH8cNTpYaj9OM_ECR9rgebJwBdp3fUecDtcMGB2ObVGYdsEk60ZBUnObzJ-SRwy7ap4d1QT6fv_m0eptdfby4XL2-ykwhS8h4pdAahIaVCsG4QtYsN6VjLAdZCeGEdSBNXQqmmISaG6lMASVTvHIICAvycl83_fDb1sZJ9200tutwsH4bNZdKVTxXUP0HlblgkMb2bwqCcZnPT1qQ0z01wccYrNNjaHsMO82ZnrPTKTuN-nd2ST8_FN7WvW3u7V1YCbw4AIwpFRfSMNv4xymAgnOVHN-7H21nd3_rqd-dXd81z_Z3Ukb25_0dDLdaKlCF_vLhQr9frVQJ11_1OfwCkbfADQ</recordid><startdate>201305</startdate><enddate>201305</enddate><creator>Kannan, M. Bobby</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley-Blackwell</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7SE</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>F28</scope><scope>JG9</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>201305</creationdate><title>Improving the packing density of calcium phosphate coating on a magnesium alloy for enhanced degradation resistance</title><author>Kannan, M. Bobby</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5683-197aeca3d087a3cf56b04c8f00436922f2ef36cb8207063b1c67c5380719fa3a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Alloys - chemistry</topic><topic>Biological and medical sciences</topic><topic>Calcium phosphate</topic><topic>Calcium Phosphates - chemistry</topic><topic>Coated Materials, Biocompatible - chemistry</topic><topic>Coating</topic><topic>Corrosion</topic><topic>Degradation</topic><topic>Dielectric Spectroscopy</topic><topic>Electric Conductivity</topic><topic>Electrochemical impedance spectroscopy</topic><topic>Electrochemical Techniques</topic><topic>electrochemistry</topic><topic>Ethanol</topic><topic>Ethanol - chemistry</topic><topic>Ethyl alcohol</topic><topic>magnesium</topic><topic>Magnesium - chemistry</topic><topic>Materials Testing</topic><topic>Medical sciences</topic><topic>Polarization</topic><topic>Prostheses and Implants</topic><topic>Scanning electron microscopy</topic><topic>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</topic><topic>Surgical implants</topic><topic>Technology. Biomaterials. Equipments</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kannan, M. Bobby</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of biomedical materials research. Part A</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kannan, M. Bobby</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improving the packing density of calcium phosphate coating on a magnesium alloy for enhanced degradation resistance</atitle><jtitle>Journal of biomedical materials research. Part A</jtitle><addtitle>J. Biomed. Mater. Res</addtitle><date>2013-05</date><risdate>2013</risdate><volume>101A</volume><issue>5</issue><spage>1248</spage><epage>1254</epage><pages>1248-1254</pages><issn>1549-3296</issn><eissn>1552-4965</eissn><abstract>In this study, an attempt was made to improve the packing density of calcium phosphate (CaP) coating on a magnesium alloy by tailoring the coating solution for enhanced degradation resistance of the alloy for implant applications. An organic solvent, ethanol, was added to the coating solution to decrease the conductivity of the coating solution so that hydrogen bubble formation/bursting reduces during the CaP coating process. Experimental results confirmed that ethanol addition to the coating solution reduces the conductivity of the solution and also decreases the hydrogen evolution/bubble bursting. In vitro electrochemical experiments, that is, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization showed that CaP coating produced in 30% (v/v) ethanol containing coating solution (3E) exhibits significantly higher degradation resistance (i.e., ∼50% higher polarization resistance and ∼60% lower corrosion current) than the aqueous solution coating. Scanning electron microscope (SEM) analysis of the coatings revealed that the packing of 3E coating was denser than that of aqueous coating, which can be attributed to the lower hydrogen evolution in the former than in the latter. Further increase in the ethanol content in the coating solution was not beneficial; in fact, the coating produced in 70% (v/v) ethanol containing solution (7E) showed degradation resistance much inferior to that of the aqueous coating, which is due to low thickness of 7E coating. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2013.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>23008190</pmid><doi>10.1002/jbm.a.34423</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Alloys - chemistry Biological and medical sciences Calcium phosphate Calcium Phosphates - chemistry Coated Materials, Biocompatible - chemistry Coating Corrosion Degradation Dielectric Spectroscopy Electric Conductivity Electrochemical impedance spectroscopy Electrochemical Techniques electrochemistry Ethanol Ethanol - chemistry Ethyl alcohol magnesium Magnesium - chemistry Materials Testing Medical sciences Polarization Prostheses and Implants Scanning electron microscopy Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Surgical implants Technology. Biomaterials. Equipments |
| title | Improving the packing density of calcium phosphate coating on a magnesium alloy for enhanced degradation resistance |
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