Hot corrosion behavior of MCrAlY coatings on IN738LC
The hot corrosion behavior of CoNiCrAlY coatings deposited on IN738LC super alloy using low pressure plasma spray (LPPS) was investigated using samples immersed in a solution of Na2SO4–10 wt.% NaCl and dried as to be covered with a 2.5 mg/cm2 costing. Specimens were heat-treated in furnace at 850 °C...
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| Veröffentlicht in: | Surface & coatings technology 2006-12, Vol.201 (6), p.2202-2207 |
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| creator | Mobarra, R. Jafari, A.H. Karaminezhaad, M. |
| description | The hot corrosion behavior of CoNiCrAlY coatings deposited on IN738LC super alloy using low pressure plasma spray (LPPS) was investigated using samples immersed in a solution of Na2SO4–10 wt.% NaCl and dried as to be covered with a 2.5 mg/cm2 costing. Specimens were heat-treated in furnace at 850 °C and after 24 h in the furnace were accurately weighed. Microstructural characterizations were carried out by scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS) indicated interactions within microstructure of the coating with clearly diminished thickness of MCrAlY coating. Phase transformation and β-NiAl phase depletion in the MCrAlY coatings were shown to be directly related to the thermal cycles experienced by the samples and revealed outward diffusion of Al in the coating and the inward migration of Ni toward the coating causing β→γ′ phase transformation as the main cause of instability of the β-NiAl. |
| doi_str_mv | 10.1016/j.surfcoat.2006.03.043 |
| format | Article |
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Specimens were heat-treated in furnace at 850 °C and after 24 h in the furnace were accurately weighed. Microstructural characterizations were carried out by scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS) indicated interactions within microstructure of the coating with clearly diminished thickness of MCrAlY coating. Phase transformation and β-NiAl phase depletion in the MCrAlY coatings were shown to be directly related to the thermal cycles experienced by the samples and revealed outward diffusion of Al in the coating and the inward migration of Ni toward the coating causing β→γ′ phase transformation as the main cause of instability of the β-NiAl.</description><identifier>ISSN: 0257-8972</identifier><identifier>EISSN: 1879-3347</identifier><identifier>DOI: 10.1016/j.surfcoat.2006.03.043</identifier><identifier>CODEN: SCTEEJ</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Applied sciences ; CoNiCrAlY Coating ; Corrosion ; Corrosion environments ; Exact sciences and technology ; Hot corrosion ; Metallic coatings ; Metals. 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Specimens were heat-treated in furnace at 850 °C and after 24 h in the furnace were accurately weighed. Microstructural characterizations were carried out by scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS) indicated interactions within microstructure of the coating with clearly diminished thickness of MCrAlY coating. Phase transformation and β-NiAl phase depletion in the MCrAlY coatings were shown to be directly related to the thermal cycles experienced by the samples and revealed outward diffusion of Al in the coating and the inward migration of Ni toward the coating causing β→γ′ phase transformation as the main cause of instability of the β-NiAl.</description><subject>Applied sciences</subject><subject>CoNiCrAlY Coating</subject><subject>Corrosion</subject><subject>Corrosion environments</subject><subject>Exact sciences and technology</subject><subject>Hot corrosion</subject><subject>Metallic coatings</subject><subject>Metals. Metallurgy</subject><subject>Phase transformation</subject><subject>Plasma spray</subject><subject>Production techniques</subject><subject>Surface treatment</subject><issn>0257-8972</issn><issn>1879-3347</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNqNkD1PwzAQhi0EEuXjL6AssCXYsR3bG1XFR6UCCwxMlnu5gKs0LnZaiX9PqhYxwnTDPe-9uoeQC0YLRll1vSjSOjYQXF-UlFYF5QUV_ICMmFYm51yoQzKipVS5Nqo8JicpLSilTBkxIuIh9BmEGEPyocvm-OE2PsQsNNnjJI7bt2x72HfvKRvW0yfF9WxyRo4a1yY8389T8np3-zJ5yGfP99PJeJaDoKLPRc1cDVxp5NpoDWXdGMA5VnPkUBpRiVoBE43REh1IN1coai0EK0sGXCI_JVe7u6sYPteYerv0CbBtXYdhnWxppNRSyn-AnHJN6QBWOxCGh1PExq6iX7r4ZRm1W5t2YX9s2q1NS7kdbA7By32DS-DaJroOfPpNa26EltuCmx2Hg5eNx2gTeOwAax8RelsH_1fVN1_8jL4</recordid><startdate>20061204</startdate><enddate>20061204</enddate><creator>Mobarra, R.</creator><creator>Jafari, A.H.</creator><creator>Karaminezhaad, M.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>7QF</scope><scope>7SE</scope><scope>7SR</scope><scope>8BQ</scope><scope>JG9</scope></search><sort><creationdate>20061204</creationdate><title>Hot corrosion behavior of MCrAlY coatings on IN738LC</title><author>Mobarra, R. ; Jafari, A.H. ; Karaminezhaad, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c404t-4d1adc378e38988c2df9cebe6be3c29464d7c14f985eac5ab7e4d8441221c35e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Applied sciences</topic><topic>CoNiCrAlY Coating</topic><topic>Corrosion</topic><topic>Corrosion environments</topic><topic>Exact sciences and technology</topic><topic>Hot corrosion</topic><topic>Metallic coatings</topic><topic>Metals. Metallurgy</topic><topic>Phase transformation</topic><topic>Plasma spray</topic><topic>Production techniques</topic><topic>Surface treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mobarra, R.</creatorcontrib><creatorcontrib>Jafari, A.H.</creatorcontrib><creatorcontrib>Karaminezhaad, M.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aluminium Industry Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Materials Research Database</collection><jtitle>Surface & coatings technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mobarra, R.</au><au>Jafari, A.H.</au><au>Karaminezhaad, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hot corrosion behavior of MCrAlY coatings on IN738LC</atitle><jtitle>Surface & coatings technology</jtitle><date>2006-12-04</date><risdate>2006</risdate><volume>201</volume><issue>6</issue><spage>2202</spage><epage>2207</epage><pages>2202-2207</pages><issn>0257-8972</issn><eissn>1879-3347</eissn><coden>SCTEEJ</coden><abstract>The hot corrosion behavior of CoNiCrAlY coatings deposited on IN738LC super alloy using low pressure plasma spray (LPPS) was investigated using samples immersed in a solution of Na2SO4–10 wt.% NaCl and dried as to be covered with a 2.5 mg/cm2 costing. 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| issn | 0257-8972 1879-3347 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences CoNiCrAlY Coating Corrosion Corrosion environments Exact sciences and technology Hot corrosion Metallic coatings Metals. Metallurgy Phase transformation Plasma spray Production techniques Surface treatment |
| title | Hot corrosion behavior of MCrAlY coatings on IN738LC |
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