Additive laser deposition of YSZ on Ni base superalloy for thermal barrier application
In the present work, the feasibility of additive laser deposition (ALD) of YSZ on IN625 substrate was studied using two different bond coats (BC) viz. NiCr and NiCrAlY and two different deposition schemes, consisting of direct deposition of YSZ (DI) and compositionally graded (CG) deposition of bond...
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| Veröffentlicht in: | Surface & coatings technology 2018-11, Vol.354, p.257-267 |
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| creator | Savitha, U. Srinivas, V. Jagan Reddy, G. Gokhale, Amol A. Sundararaman, M. |
| description | In the present work, the feasibility of additive laser deposition (ALD) of YSZ on IN625 substrate was studied using two different bond coats (BC) viz. NiCr and NiCrAlY and two different deposition schemes, consisting of direct deposition of YSZ (DI) and compositionally graded (CG) deposition of bond coat-YSZ. These deposits were examined for microstructural features, and their ability to provide thermal barrier to heat flow and to withstand thermal cycling were evaluated. It has been observed that DI and CG NiCr-YSZ coatings survive 240 cycles whereas CG NiCrAlY-YSZ samples survive |
| doi_str_mv | 10.1016/j.surfcoat.2018.08.089 |
| format | Article |
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•Additive laser deposition has the potential to fabricate thick TBCs of YSZ.•Functionally graded YSZ shows significant improvement in adhesion strength and thermal insulation property.•Large no. of metal-ceramic interfaces in functionally graded YSZ results in improved thermal insulation.</description><identifier>ISSN: 0257-8972</identifier><identifier>EISSN: 1879-3347</identifier><identifier>DOI: 10.1016/j.surfcoat.2018.08.089</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Coatings ; Functionally graded materials ; Heat transmission ; Insulation ; Laser deposition ; Laser engineered net shaping ; Lasers ; Nickel base alloys ; Substrates ; Superalloys ; Thermal barrier coatings ; Thermal cycling ; Thermal insulation ; Thermal resistance ; Yttria stabilized zirconia ; Zirconium alloys</subject><ispartof>Surface & coatings technology, 2018-11, Vol.354, p.257-267</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Nov 25, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c340t-e512f186802caea3e867278fe4210cf44fdd86d40e769ca62c7d52bdb1ded4443</citedby><cites>FETCH-LOGICAL-c340t-e512f186802caea3e867278fe4210cf44fdd86d40e769ca62c7d52bdb1ded4443</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.surfcoat.2018.08.089$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Savitha, U.</creatorcontrib><creatorcontrib>Srinivas, V.</creatorcontrib><creatorcontrib>Jagan Reddy, G.</creatorcontrib><creatorcontrib>Gokhale, Amol A.</creatorcontrib><creatorcontrib>Sundararaman, M.</creatorcontrib><title>Additive laser deposition of YSZ on Ni base superalloy for thermal barrier application</title><title>Surface & coatings technology</title><description>In the present work, the feasibility of additive laser deposition (ALD) of YSZ on IN625 substrate was studied using two different bond coats (BC) viz. NiCr and NiCrAlY and two different deposition schemes, consisting of direct deposition of YSZ (DI) and compositionally graded (CG) deposition of bond coat-YSZ. These deposits were examined for microstructural features, and their ability to provide thermal barrier to heat flow and to withstand thermal cycling were evaluated. It has been observed that DI and CG NiCr-YSZ coatings survive 240 cycles whereas CG NiCrAlY-YSZ samples survive <5 thermal cycles between 1100 °C and room temperature. The poor thermal cycling resistance of CG NiCrAlY-YSZ coatings is attributed to the formation of a brittle oxide layer at the interface of NiCrAlY and YSZ. Between all four combinations of BC and types of deposition, CG NiCr-YSZ coatings give the maximum temperature drop (350 °C) across the thickness when tested at 1000 °C as hot face temperature and for 600 s duration which, combined with good thermal cycling resistance, makes them potential candidates as thermal barrier coatings (TBCs) applied by additive laser deposition.
•Additive laser deposition has the potential to fabricate thick TBCs of YSZ.•Functionally graded YSZ shows significant improvement in adhesion strength and thermal insulation property.•Large no. of metal-ceramic interfaces in functionally graded YSZ results in improved thermal insulation.</description><subject>Coatings</subject><subject>Functionally graded materials</subject><subject>Heat transmission</subject><subject>Insulation</subject><subject>Laser deposition</subject><subject>Laser engineered net shaping</subject><subject>Lasers</subject><subject>Nickel base alloys</subject><subject>Substrates</subject><subject>Superalloys</subject><subject>Thermal barrier coatings</subject><subject>Thermal cycling</subject><subject>Thermal insulation</subject><subject>Thermal resistance</subject><subject>Yttria stabilized zirconia</subject><subject>Zirconium alloys</subject><issn>0257-8972</issn><issn>1879-3347</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqFUE1LAzEQDaJgrf4FCXjemmTTTfZmKX5B0YMfoJeQJhPMsm3WZLfQf2-W6lkYmGHevDe8h9AlJTNKaHXdzNIQnQm6nzFC5YyMVR-hCZWiLsqSi2M0IWwuClkLdorOUmoIIVTUfILeF9b63u8AtzpBxBa6kPIibHFw-OPlE-fpyeN1RnEaOoi6bcMeuxBx_wVxo9uMxegzV3dd640eyefoxOk2wcVvn6K3u9vX5UOxer5_XC5WhSk56QuYU-aorCRhRoMuQVaCCemAM0qM49xZKyvLCYiqNrpiRtg5W9s1tWA55-UUXR10uxi-B0i9asIQt_mlYrQUlJaSlvmqOlyZGFKK4FQX_UbHvaJEjRmqRv1lqMYMFRmrzsSbAxGyh132qJLxsDVgfQTTKxv8fxI_Kut_Dg</recordid><startdate>20181125</startdate><enddate>20181125</enddate><creator>Savitha, U.</creator><creator>Srinivas, V.</creator><creator>Jagan Reddy, G.</creator><creator>Gokhale, Amol A.</creator><creator>Sundararaman, M.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20181125</creationdate><title>Additive laser deposition of YSZ on Ni base superalloy for thermal barrier application</title><author>Savitha, U. ; Srinivas, V. ; Jagan Reddy, G. ; Gokhale, Amol A. ; Sundararaman, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c340t-e512f186802caea3e867278fe4210cf44fdd86d40e769ca62c7d52bdb1ded4443</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Coatings</topic><topic>Functionally graded materials</topic><topic>Heat transmission</topic><topic>Insulation</topic><topic>Laser deposition</topic><topic>Laser engineered net shaping</topic><topic>Lasers</topic><topic>Nickel base alloys</topic><topic>Substrates</topic><topic>Superalloys</topic><topic>Thermal barrier coatings</topic><topic>Thermal cycling</topic><topic>Thermal insulation</topic><topic>Thermal resistance</topic><topic>Yttria stabilized zirconia</topic><topic>Zirconium alloys</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Savitha, U.</creatorcontrib><creatorcontrib>Srinivas, V.</creatorcontrib><creatorcontrib>Jagan Reddy, G.</creatorcontrib><creatorcontrib>Gokhale, Amol A.</creatorcontrib><creatorcontrib>Sundararaman, M.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Surface & coatings technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Savitha, U.</au><au>Srinivas, V.</au><au>Jagan Reddy, G.</au><au>Gokhale, Amol A.</au><au>Sundararaman, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Additive laser deposition of YSZ on Ni base superalloy for thermal barrier application</atitle><jtitle>Surface & coatings technology</jtitle><date>2018-11-25</date><risdate>2018</risdate><volume>354</volume><spage>257</spage><epage>267</epage><pages>257-267</pages><issn>0257-8972</issn><eissn>1879-3347</eissn><abstract>In the present work, the feasibility of additive laser deposition (ALD) of YSZ on IN625 substrate was studied using two different bond coats (BC) viz. NiCr and NiCrAlY and two different deposition schemes, consisting of direct deposition of YSZ (DI) and compositionally graded (CG) deposition of bond coat-YSZ. These deposits were examined for microstructural features, and their ability to provide thermal barrier to heat flow and to withstand thermal cycling were evaluated. It has been observed that DI and CG NiCr-YSZ coatings survive 240 cycles whereas CG NiCrAlY-YSZ samples survive <5 thermal cycles between 1100 °C and room temperature. The poor thermal cycling resistance of CG NiCrAlY-YSZ coatings is attributed to the formation of a brittle oxide layer at the interface of NiCrAlY and YSZ. Between all four combinations of BC and types of deposition, CG NiCr-YSZ coatings give the maximum temperature drop (350 °C) across the thickness when tested at 1000 °C as hot face temperature and for 600 s duration which, combined with good thermal cycling resistance, makes them potential candidates as thermal barrier coatings (TBCs) applied by additive laser deposition.
•Additive laser deposition has the potential to fabricate thick TBCs of YSZ.•Functionally graded YSZ shows significant improvement in adhesion strength and thermal insulation property.•Large no. of metal-ceramic interfaces in functionally graded YSZ results in improved thermal insulation.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.surfcoat.2018.08.089</doi><tpages>11</tpages></addata></record> |
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| ispartof | Surface & coatings technology, 2018-11, Vol.354, p.257-267 |
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| language | eng |
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| subjects | Coatings Functionally graded materials Heat transmission Insulation Laser deposition Laser engineered net shaping Lasers Nickel base alloys Substrates Superalloys Thermal barrier coatings Thermal cycling Thermal insulation Thermal resistance Yttria stabilized zirconia Zirconium alloys |
| title | Additive laser deposition of YSZ on Ni base superalloy for thermal barrier application |
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