Cyclic oxidation behaviour of different treated CoNiCrAlY coatings
► It has been investigated the oxidation behaviour of differently pretreated CoNiCrAlY coatings. ► The characteristics of the grown oxide scale influence directly the cooling rate. ► The lowest oxidation rate was exhibited by the EB and vacuum pretreated samples. High velocity oxygen fuel (HVOF) spr...
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| Veröffentlicht in: | Applied surface science 2012-08, Vol.258 (20), p.8307-8311 |
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| creator | Marginean, G. Utu, D. |
| description | ► It has been investigated the oxidation behaviour of differently pretreated CoNiCrAlY coatings. ► The characteristics of the grown oxide scale influence directly the cooling rate. ► The lowest oxidation rate was exhibited by the EB and vacuum pretreated samples.
High velocity oxygen fuel (HVOF) spraying method was used in order to obtain very dense and good adhesive CoNiCrAlY-coatings deposited onto nickel-based alloy. The coatings were differently treated (preoxidized, vacuum treated or electron beam irradiated) before their exposure to cyclic oxidation tests in air at 1000°C for periods up to 5h. Changes of the coatings morphology and structure were analysed by scanning electron microscopy (SEM) and X-ray diffraction technique (XRD). The surface temperature of the samples was measured during cooling, between the oxidation cycles, and finally was associated with the thickness of the grown protective oxide scale on the CoNiCrAlY-surface. The experimental results demonstrated that depending on the thickness respectively on the different structures of the grown oxide scale, the cooling rate of the sample surface will be different as well. |
| doi_str_mv | 10.1016/j.apsusc.2012.05.050 |
| format | Article |
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High velocity oxygen fuel (HVOF) spraying method was used in order to obtain very dense and good adhesive CoNiCrAlY-coatings deposited onto nickel-based alloy. The coatings were differently treated (preoxidized, vacuum treated or electron beam irradiated) before their exposure to cyclic oxidation tests in air at 1000°C for periods up to 5h. Changes of the coatings morphology and structure were analysed by scanning electron microscopy (SEM) and X-ray diffraction technique (XRD). The surface temperature of the samples was measured during cooling, between the oxidation cycles, and finally was associated with the thickness of the grown protective oxide scale on the CoNiCrAlY-surface. The experimental results demonstrated that depending on the thickness respectively on the different structures of the grown oxide scale, the cooling rate of the sample surface will be different as well.</description><identifier>ISSN: 0169-4332</identifier><identifier>EISSN: 1873-5584</identifier><identifier>DOI: 10.1016/j.apsusc.2012.05.050</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Coatings ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Condensed matter: structure, mechanical and thermal properties ; CoNiCrAlY coatings ; Cooling ; Cross-disciplinary physics: materials science; rheology ; Cyclic oxidation ; Exact sciences and technology ; Flame spraying ; Oxidation ; Oxide scale ; Oxides ; Physics ; Scale (corrosion) ; Scanning electron microscopy ; Surface temperature</subject><ispartof>Applied surface science, 2012-08, Vol.258 (20), p.8307-8311</ispartof><rights>2012 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c369t-5c1dddf767c981cf2cb18194c955a29690e30bf0358cc4da50255d2bcc635c213</citedby><cites>FETCH-LOGICAL-c369t-5c1dddf767c981cf2cb18194c955a29690e30bf0358cc4da50255d2bcc635c213</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.apsusc.2012.05.050$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26067237$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Marginean, G.</creatorcontrib><creatorcontrib>Utu, D.</creatorcontrib><title>Cyclic oxidation behaviour of different treated CoNiCrAlY coatings</title><title>Applied surface science</title><description>► It has been investigated the oxidation behaviour of differently pretreated CoNiCrAlY coatings. ► The characteristics of the grown oxide scale influence directly the cooling rate. ► The lowest oxidation rate was exhibited by the EB and vacuum pretreated samples.
High velocity oxygen fuel (HVOF) spraying method was used in order to obtain very dense and good adhesive CoNiCrAlY-coatings deposited onto nickel-based alloy. The coatings were differently treated (preoxidized, vacuum treated or electron beam irradiated) before their exposure to cyclic oxidation tests in air at 1000°C for periods up to 5h. Changes of the coatings morphology and structure were analysed by scanning electron microscopy (SEM) and X-ray diffraction technique (XRD). The surface temperature of the samples was measured during cooling, between the oxidation cycles, and finally was associated with the thickness of the grown protective oxide scale on the CoNiCrAlY-surface. The experimental results demonstrated that depending on the thickness respectively on the different structures of the grown oxide scale, the cooling rate of the sample surface will be different as well.</description><subject>Coatings</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>CoNiCrAlY coatings</subject><subject>Cooling</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Cyclic oxidation</subject><subject>Exact sciences and technology</subject><subject>Flame spraying</subject><subject>Oxidation</subject><subject>Oxide scale</subject><subject>Oxides</subject><subject>Physics</subject><subject>Scale (corrosion)</subject><subject>Scanning electron microscopy</subject><subject>Surface temperature</subject><issn>0169-4332</issn><issn>1873-5584</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAUhYMoOI7-AxfdCG5a82j62Ahj8QWDbnThKqQ3iWboNGPSDs6_N0MHl8KBu7jfuYd7ELokOCOYFDerTG7CGCCjmNAM8yh8hGakKlnKeZUfo1nE6jRnjJ6isxBWOIJxO0N3zQ46C4n7sUoO1vVJq7_k1rrRJ84kyhqjve6HZPBaDloljXuxjV90Hwm4aOg_wzk6MbIL-uIw5-j94f6teUqXr4_PzWKZAivqIeVAlFKmLEqoKwKGQksqUudQcy5pXdRYM9wazHgFkCvJMeVc0RagYBwoYXN0Pd3dePc96jCItQ2gu0722o1BEMwIIzmpcETzCQXvQvDaiI23a-l3ERL7ysRKTJWJfWUC86i97eqQIAPIznjZgw1_XlrgoqSsjNztxOn47tZqLwJY3YNW1msYhHL2_6BfhECDLg</recordid><startdate>20120801</startdate><enddate>20120801</enddate><creator>Marginean, G.</creator><creator>Utu, D.</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>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20120801</creationdate><title>Cyclic oxidation behaviour of different treated CoNiCrAlY coatings</title><author>Marginean, G. ; Utu, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c369t-5c1dddf767c981cf2cb18194c955a29690e30bf0358cc4da50255d2bcc635c213</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Coatings</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>CoNiCrAlY coatings</topic><topic>Cooling</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Cyclic oxidation</topic><topic>Exact sciences and technology</topic><topic>Flame spraying</topic><topic>Oxidation</topic><topic>Oxide scale</topic><topic>Oxides</topic><topic>Physics</topic><topic>Scale (corrosion)</topic><topic>Scanning electron microscopy</topic><topic>Surface temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Marginean, G.</creatorcontrib><creatorcontrib>Utu, D.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Corrosion Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied surface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Marginean, G.</au><au>Utu, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cyclic oxidation behaviour of different treated CoNiCrAlY coatings</atitle><jtitle>Applied surface science</jtitle><date>2012-08-01</date><risdate>2012</risdate><volume>258</volume><issue>20</issue><spage>8307</spage><epage>8311</epage><pages>8307-8311</pages><issn>0169-4332</issn><eissn>1873-5584</eissn><abstract>► It has been investigated the oxidation behaviour of differently pretreated CoNiCrAlY coatings. ► The characteristics of the grown oxide scale influence directly the cooling rate. ► The lowest oxidation rate was exhibited by the EB and vacuum pretreated samples.
High velocity oxygen fuel (HVOF) spraying method was used in order to obtain very dense and good adhesive CoNiCrAlY-coatings deposited onto nickel-based alloy. The coatings were differently treated (preoxidized, vacuum treated or electron beam irradiated) before their exposure to cyclic oxidation tests in air at 1000°C for periods up to 5h. Changes of the coatings morphology and structure were analysed by scanning electron microscopy (SEM) and X-ray diffraction technique (XRD). The surface temperature of the samples was measured during cooling, between the oxidation cycles, and finally was associated with the thickness of the grown protective oxide scale on the CoNiCrAlY-surface. The experimental results demonstrated that depending on the thickness respectively on the different structures of the grown oxide scale, the cooling rate of the sample surface will be different as well.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.apsusc.2012.05.050</doi><tpages>5</tpages></addata></record> |
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| subjects | Coatings Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties CoNiCrAlY coatings Cooling Cross-disciplinary physics: materials science rheology Cyclic oxidation Exact sciences and technology Flame spraying Oxidation Oxide scale Oxides Physics Scale (corrosion) Scanning electron microscopy Surface temperature |
| title | Cyclic oxidation behaviour of different treated CoNiCrAlY coatings |
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