A facile preparation of ceramic coatings on Ti alloys for thermal protection systems
In order to reduce the effects of solar energy on the instruments and the apparatus in the outer space, two different kinds of ceramic coatings were prepared on Ti6Al4V alloys by plasma electrolytic oxidation (PEO) in zirconate electrolytes. The phase composition, microstructure, thickness, and roug...
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Veröffentlicht in: | Solar energy materials and solar cells 2015-12, Vol.143, p.236-241 |
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creator | Yaoa, Zhongping Xiaa, Qixing Shena, Qiaoxiang Jub, Pengfei Sub, Peibo Hua, Bing Jianga, Zhaohua |
description | In order to reduce the effects of solar energy on the instruments and the apparatus in the outer space, two different kinds of ceramic coatings were prepared on Ti6Al4V alloys by plasma electrolytic oxidation (PEO) in zirconate electrolytes. The phase composition, microstructure, thickness, and roughness of coatings were examined by XRD, SEM, EDS, thickness measurement gauge, and roughness measuring instrument, respectively. The infrared emissivity and solar absorbance of the ceramic coatings were studied with the UV-vis-NIR spectrophotometer and infrared reflectometer. The results show that ZrO sub(2) coatings are dense and deep gray-green, and mainly composed of m-ZrO sub(2), t-ZrO sub(2). In addition, a small amount of TiO sub(2), ZrTiO sub(4,) and the amorphous compound containing P exists in the coating. The intrinsic solar absorbance and emissivity of ZrO sub(2) coatings are 0.92 and 0.76, respectively. The KZr sub(2)(PO sub(4)) sub(3) coating is rough, thick, and white with the main crystalline of KZr sub(2)(PO sub(4)) sub(3). The intrinsic solar absorbance and emissivity of the KZr sub(2)(PO sub(4)) sub(3) coating are 0.62 and 0.91, respectively. For both coatings, the absorbance decreases while the emissivity increases due to an increase in the real surface area of the coatings by increasing thickness and roughness of the coatings as the PEO time progresses. The porous structure of the KZr sub(2)(PO sub(4)) sub(3) is proved to be ideal for high emissivity and low absorbance materials with the lowest solar absorbance (0.239), the highest infrared emissivity (0.99), and a corresponding balance temperature of the coating of 276 K. |
doi_str_mv | 10.1016/j.solmat.2015.07.009 |
format | Article |
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The phase composition, microstructure, thickness, and roughness of coatings were examined by XRD, SEM, EDS, thickness measurement gauge, and roughness measuring instrument, respectively. The infrared emissivity and solar absorbance of the ceramic coatings were studied with the UV-vis-NIR spectrophotometer and infrared reflectometer. The results show that ZrO sub(2) coatings are dense and deep gray-green, and mainly composed of m-ZrO sub(2), t-ZrO sub(2). In addition, a small amount of TiO sub(2), ZrTiO sub(4,) and the amorphous compound containing P exists in the coating. The intrinsic solar absorbance and emissivity of ZrO sub(2) coatings are 0.92 and 0.76, respectively. The KZr sub(2)(PO sub(4)) sub(3) coating is rough, thick, and white with the main crystalline of KZr sub(2)(PO sub(4)) sub(3). The intrinsic solar absorbance and emissivity of the KZr sub(2)(PO sub(4)) sub(3) coating are 0.62 and 0.91, respectively. For both coatings, the absorbance decreases while the emissivity increases due to an increase in the real surface area of the coatings by increasing thickness and roughness of the coatings as the PEO time progresses. The porous structure of the KZr sub(2)(PO sub(4)) sub(3) is proved to be ideal for high emissivity and low absorbance materials with the lowest solar absorbance (0.239), the highest infrared emissivity (0.99), and a corresponding balance temperature of the coating of 276 K.</description><identifier>ISSN: 0927-0248</identifier><identifier>DOI: 10.1016/j.solmat.2015.07.009</identifier><language>eng</language><subject>Absorbance ; Ceramic coatings ; Coatings ; Emissivity ; Roughness ; Titanium base alloys ; Titanium dioxide ; Zirconium dioxide</subject><ispartof>Solar energy materials and solar cells, 2015-12, Vol.143, p.236-241</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c358t-65528e6f4b6db3fb346c113162df78fd9354f3462f9c0c198e08583c3f8991fb3</citedby><cites>FETCH-LOGICAL-c358t-65528e6f4b6db3fb346c113162df78fd9354f3462f9c0c198e08583c3f8991fb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Yaoa, Zhongping</creatorcontrib><creatorcontrib>Xiaa, Qixing</creatorcontrib><creatorcontrib>Shena, Qiaoxiang</creatorcontrib><creatorcontrib>Jub, Pengfei</creatorcontrib><creatorcontrib>Sub, Peibo</creatorcontrib><creatorcontrib>Hua, Bing</creatorcontrib><creatorcontrib>Jianga, Zhaohua</creatorcontrib><title>A facile preparation of ceramic coatings on Ti alloys for thermal protection systems</title><title>Solar energy materials and solar cells</title><description>In order to reduce the effects of solar energy on the instruments and the apparatus in the outer space, two different kinds of ceramic coatings were prepared on Ti6Al4V alloys by plasma electrolytic oxidation (PEO) in zirconate electrolytes. The phase composition, microstructure, thickness, and roughness of coatings were examined by XRD, SEM, EDS, thickness measurement gauge, and roughness measuring instrument, respectively. The infrared emissivity and solar absorbance of the ceramic coatings were studied with the UV-vis-NIR spectrophotometer and infrared reflectometer. The results show that ZrO sub(2) coatings are dense and deep gray-green, and mainly composed of m-ZrO sub(2), t-ZrO sub(2). In addition, a small amount of TiO sub(2), ZrTiO sub(4,) and the amorphous compound containing P exists in the coating. The intrinsic solar absorbance and emissivity of ZrO sub(2) coatings are 0.92 and 0.76, respectively. The KZr sub(2)(PO sub(4)) sub(3) coating is rough, thick, and white with the main crystalline of KZr sub(2)(PO sub(4)) sub(3). The intrinsic solar absorbance and emissivity of the KZr sub(2)(PO sub(4)) sub(3) coating are 0.62 and 0.91, respectively. For both coatings, the absorbance decreases while the emissivity increases due to an increase in the real surface area of the coatings by increasing thickness and roughness of the coatings as the PEO time progresses. The porous structure of the KZr sub(2)(PO sub(4)) sub(3) is proved to be ideal for high emissivity and low absorbance materials with the lowest solar absorbance (0.239), the highest infrared emissivity (0.99), and a corresponding balance temperature of the coating of 276 K.</description><subject>Absorbance</subject><subject>Ceramic coatings</subject><subject>Coatings</subject><subject>Emissivity</subject><subject>Roughness</subject><subject>Titanium base alloys</subject><subject>Titanium dioxide</subject><subject>Zirconium dioxide</subject><issn>0927-0248</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkLlOAzEURV2ARFj-gMIlzQzP69hlFLFJkWhCbTmODRN54mA7Rf4eh_ABVE-6Ovfq6SB0T6AnQOTjti8pTrb2FIjoYegB9AWagaZDB5SrK3RdyhYAqGR8hlZzHKwbo8f77Pc22zqmHU4BO5_tNDrsUot2nwW3eDViG2M6FhxSxvXL58nGVkzVu99eOZbqp3KLLoONxd_93Rv08fy0Wrx2y_eXt8V82TkmVO2kEFR5GfhabtYsrBmXjhBGJN2EQYWNZoKHFtKgHTiilQclFHMsKK1J42_Qw3m3vfB98KWaaSzOx2h3Ph2KIYoKPihB9T9QUJJzzaCh_Iy6nErJPph9Hiebj4aAOTk2W3N2bE6ODQymOWY_YwVzvw</recordid><startdate>20151201</startdate><enddate>20151201</enddate><creator>Yaoa, Zhongping</creator><creator>Xiaa, Qixing</creator><creator>Shena, Qiaoxiang</creator><creator>Jub, Pengfei</creator><creator>Sub, Peibo</creator><creator>Hua, Bing</creator><creator>Jianga, Zhaohua</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7SP</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20151201</creationdate><title>A facile preparation of ceramic coatings on Ti alloys for thermal protection systems</title><author>Yaoa, Zhongping ; Xiaa, Qixing ; Shena, Qiaoxiang ; Jub, Pengfei ; Sub, Peibo ; Hua, Bing ; Jianga, Zhaohua</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c358t-65528e6f4b6db3fb346c113162df78fd9354f3462f9c0c198e08583c3f8991fb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Absorbance</topic><topic>Ceramic coatings</topic><topic>Coatings</topic><topic>Emissivity</topic><topic>Roughness</topic><topic>Titanium base alloys</topic><topic>Titanium dioxide</topic><topic>Zirconium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yaoa, Zhongping</creatorcontrib><creatorcontrib>Xiaa, Qixing</creatorcontrib><creatorcontrib>Shena, Qiaoxiang</creatorcontrib><creatorcontrib>Jub, Pengfei</creatorcontrib><creatorcontrib>Sub, Peibo</creatorcontrib><creatorcontrib>Hua, Bing</creatorcontrib><creatorcontrib>Jianga, Zhaohua</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Solar energy materials and solar cells</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yaoa, Zhongping</au><au>Xiaa, Qixing</au><au>Shena, Qiaoxiang</au><au>Jub, Pengfei</au><au>Sub, Peibo</au><au>Hua, Bing</au><au>Jianga, Zhaohua</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A facile preparation of ceramic coatings on Ti alloys for thermal protection systems</atitle><jtitle>Solar energy materials and solar cells</jtitle><date>2015-12-01</date><risdate>2015</risdate><volume>143</volume><spage>236</spage><epage>241</epage><pages>236-241</pages><issn>0927-0248</issn><abstract>In order to reduce the effects of solar energy on the instruments and the apparatus in the outer space, two different kinds of ceramic coatings were prepared on Ti6Al4V alloys by plasma electrolytic oxidation (PEO) in zirconate electrolytes. The phase composition, microstructure, thickness, and roughness of coatings were examined by XRD, SEM, EDS, thickness measurement gauge, and roughness measuring instrument, respectively. The infrared emissivity and solar absorbance of the ceramic coatings were studied with the UV-vis-NIR spectrophotometer and infrared reflectometer. The results show that ZrO sub(2) coatings are dense and deep gray-green, and mainly composed of m-ZrO sub(2), t-ZrO sub(2). In addition, a small amount of TiO sub(2), ZrTiO sub(4,) and the amorphous compound containing P exists in the coating. The intrinsic solar absorbance and emissivity of ZrO sub(2) coatings are 0.92 and 0.76, respectively. The KZr sub(2)(PO sub(4)) sub(3) coating is rough, thick, and white with the main crystalline of KZr sub(2)(PO sub(4)) sub(3). The intrinsic solar absorbance and emissivity of the KZr sub(2)(PO sub(4)) sub(3) coating are 0.62 and 0.91, respectively. For both coatings, the absorbance decreases while the emissivity increases due to an increase in the real surface area of the coatings by increasing thickness and roughness of the coatings as the PEO time progresses. The porous structure of the KZr sub(2)(PO sub(4)) sub(3) is proved to be ideal for high emissivity and low absorbance materials with the lowest solar absorbance (0.239), the highest infrared emissivity (0.99), and a corresponding balance temperature of the coating of 276 K.</abstract><doi>10.1016/j.solmat.2015.07.009</doi><tpages>6</tpages></addata></record> |
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subjects | Absorbance Ceramic coatings Coatings Emissivity Roughness Titanium base alloys Titanium dioxide Zirconium dioxide |
title | A facile preparation of ceramic coatings on Ti alloys for thermal protection systems |
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