| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZGivnJVY/LvKzQ |
| Repository | sid.inpe.br/mtc-m16@80/2006/06.20.14.36 (restricted access) |
| Last Update | 2006:06.20.14.36.22 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m16@80/2006/06.20.14.36.23 |
| Metadata Last Update | 2018:06.05.01.16.50 (UTC) administrator |
| Secondary Key | INPE-13794--PRE/8980 |
| ISSN | 0257-8972 |
| Citation Key | AlmeidaSilvNonoCair:2006:EBTBZi |
| Title | EB-PVD TBCs of zirconia co-doped with yttria and niobia, a microstructural investigation  |
| Year | 2006 |
| Month | Jan. |
| Access Date | 2024, Apr. 28 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 367 KiB |
| 2. Context | |
| Author | 1 Almeida, D. S. 2 Silva, C. R. M. 3 Nono, Maria do Carmo de Andrade 4 Cairo, C. A. A. |
| Resume Identifier | 1 2 3 8JMKD3MGP5W/3C9JHRC |
| Group | 1 LAS-INPE-MCT-BR |
| Affiliation | 1 Centro Técnico Aeroespacial, Divisão de Materiais AMR-CTA 2 Centro Técnico Aeroespacial, Divisão de Materiais AMR-CTA 3 Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Sensores e Materiais (INPE.LAS) 4 Centro Técnico Aeroespacial, Divisão de Materiais AMR-CTA |
| Journal | Surface and Coatings Technology |
| Volume | 200 |
| Number | 8 |
| Pages | 2827-2833 |
| History (UTC) | 2006-06-20 14:36:23 :: simone -> administrator :: 2008-06-10 22:42:40 :: administrator -> simone :: 2011-05-26 17:58:04 :: simone -> administrator :: 2018-06-05 01:16:50 :: administrator -> marciana :: 2006 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | SEM X-ray diffraction electron beam evaporation niobium oxide zirconium oxide THERMAL BARRIER COATINGS TETRAGONAL ZRO2 PHASE-STABILITY SYSTEMS |
| Abstract | Turbine blades of airplanes and thermoelectric plants work in adverse conditions, with corrosive environment and high temperature and pressure. One way to improve the life and/or the working temperature of the blades is the use of special coatings over metallic material applied by Electron Beam-Physical Vapor Deposition (EB-PVD). The most usual material for this application is yttria doped zirconia. Addition of mobia, as a co-dopant in the Y2O3-ZrO2 system, can reduce the thermal conductivity and improve mechanical properties of the coating. The purpose of this work is to show the influence of the addition of niobia on the microstructure of ceramic coatings by using X-ray diffraction (XRD) techniques and scanning electron microscopy (SEM) observations. SEM on fractured cross-section shows a columnar structure and the results of XRD show only zirconia tetragonal phase in the ceramic coating for the chemical composition range studied. As the difference (NbO2.5-YO1.5) mol% increases, the ratio c/a (tetragonality) increases. Considering that the t-ZrO2 solid solutions begins unstable when the relation c/a exceeds 1.020, it is possible to evaluate the maximum niobia content that can be added to the coating without losses in its mechanical properties. SEM on ceramic coatings polished cross-section shows color bands associated with chemical composition changes due to the differences in saturation vapor pressure of the individual components. As the niobia content increases, there is a tendency to reduction of the ceramic coating theoretical density. |
| Area | FISMAT |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > EB-PVD TBCs of... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | EB PVD TBCs of zirconia co doped.pdf |
| User Group | administrator simone |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | transferred to simone |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 |
| Dissemination | WEBSCI; PORTALCAPES. |
| Host Collection | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel doi e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |