| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21c.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34R/3SCQB6L | |||
| Repository | sid.inpe.br/mtc-m21c/2018/12.14.10.33 (restricted access) | |||
| Last Update | 2018:12.14.10.33.33 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2018/12.14.10.33.33 | |||
| Metadata Last Update | 2020:01.06.11.42.07 (UTC) administrator | |||
| DOI | 10.1016/j.jallcom.2018.12.020 | |||
| ISSN | 0925-8388 | |||
| Citation Key | Ardila-RodríguezMenPerOliTra:2019:TiDiPr | |||
| Title | Titanium dioxide protection against Al4C3formation duringfabrication of aluminum-TiO2coated MWCNT composite  | |||
| Year | 2019 | |||
| Month | Apr. | |||
| Access Date | 2024, May 06 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 2099 KiB | |||
| 2. Context | ||||
| Author | 1 Ardila-Rodríguez, Laura A. 2 Menezes, B. R. C. 3 Pereira Constancio, Lania Auxiliadora 4 Oliveira, A. C. 5 Travessa, D. N. | |||
| Group | 1 2 3 CMS-ETES-SESPG-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 Universidade Federal de São Paulo (UNIFESP) 2 Instituto Tecnologico de Aeronáutica (ITA) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Universidade Federal de São Paulo (UNIFESP) 5 Universidade Federal de São Paulo (UNIFESP) | |||
| Author e-Mail Address | 1 laura.ardila@unifesp.br 2 3 lania.constancio@inpe.br | |||
| Journal | Journal of Alloys and Compounds | |||
| Volume | 780 | |||
| Pages | 772-782 | |||
| Secondary Mark | A1_MATERIAIS A1_INTERDISCIPLINAR A1_ENGENHARIAS_II A2_ODONTOLOGIA A2_GEOCIÊNCIAS A2_ENGENHARIAS_III A2_ENGENHARIAS_I B1_QUÍMICA B1_ENGENHARIAS_IV B1_BIOTECNOLOGIA B1_ASTRONOMIA_/_FÍSICA B2_ANTROPOLOGIA_/_ARQUEOLOGIA | |||
| History (UTC) | 2018-12-14 10:33:33 :: simone -> administrator :: 2018-12-14 10:33:33 :: administrator -> simone :: 2018 2018-12-14 10:34:04 :: simone :: 2018 -> 2019 2018-12-14 10:34:04 :: simone -> administrator :: 2019 2020-01-06 11:42:07 :: administrator -> simone :: 2019 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Keywords | Carbon nanotubes TiO2 coating Al4C3 Metal matrix composites | |||
| Abstract | Aluminum and aluminum alloys have been very useful in the industry, mainly in the transport sector. So, is important to improve their mechanical properties to increase their applications. Carbon nanotubes (CNTs) could be an excellent reinforcing phase for metal matrix composites, specifically for composites with aluminum or aluminum alloy matrix. However, CNTs dispersion, wettability, and interaction with the matrix must be improved, without damaging their structure. In this work, multi-walled CNTs (MWCNTs) were coated by the sol-gel process with a titanium oxide (TiO2) layer with three different thickness and calcined at two different temperatures: 500 °C and 750 °C. The resultant powder was mixed by electrostatic adsorption method with aluminum powder and cold compacted. To simulate high temperature processing, the compacted disks were pressureless heated at 850 °C, aiming to check the effect of TiO2 in protecting the MWCNT when in contact with melted Al. The TiO2 coated MWCNT samples were characterized by a range of analytical techniques including Field-Emission Gun Scanning Electron Microscopy (FEG-SEM), X-ray diffraction (XRD), Z-Potential, BrunauerEmmettTeller (BET), Energy Dispersive X-Ray Spectroscopy (EDS) and Raman Spectroscopy (RS). The effect of the TiO2 layer as a protective barrier on the MWCNT against the Al4C3 formation during the heating process and the hardness of the Al/MWCNT (coated and uncoated) composite were studied. The results show that the MWCNT were successful coverage by a uniform amorphous TiO2 layer. After calcination at 500 °C and 750 °C, the layer was completely crystallized into a TiO2 film, with reduced surface area and pore volume. Electrostatic adsorption between TiO2 covered MWCNT and Al powders in aqueous suspension was found to disperse the reinforcing phase prior to consolidation. On the heat-treated discs, the formation of Al4C3 phase was observed to occur only for uncoated MWCNT samples, showing that the TiO2 layer effectively protected the nanotubes in presence of melted Al. The microhardness of the heated samples was increased up to 26% when reinforced with MWCNT and up to 46% when reinforced with TiO2 coated MWCNT, compared with pure aluminum. | |||
| Area | FISMAT | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| Target File | rodriguez_titanium.pdf | |||
| User Group | simone | |||
| Visibility | shown | |||
| Archiving Policy | denypublisher denyfinaldraft24 | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/3F358GL | |||
| Dissemination | WEBSCI; PORTALCAPES. | |||
| Host Collection | urlib.net/www/2017/11.22.19.04 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||