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Evaluation of residual iron in carbon nanotubes purified by acid treatments
(Applied Surface Science, 2011-11-01) [Artigo]
A detailed analysis by X-ray photoelectron spectroscopy was carried out on multi-walled carbon nanotube (MWCNT) surfaces after non-oxidative and oxidative purification treatments in liquid-phase. The MWCNT were produced ...
Influence of modified carbon substrate on boron doped ultrananocrystalline diamond deposition
(Materials Research Express, 2018-02-01) [Artigo]
Boron doped ultrananocrystalline diamond (B-UNCD) growth was studied on modified reticulated vitreous carbon (RVC) produced from poly(furfuryl alcohol) (PFA) resin with sodium hydroxide additions at two different heat ...
Appraisal of fiber-metal laminate panels reinforced with metal pins deposited by CMT welding
(Composite Structures, 2017-11-15) [Artigo]
Adhesion between metal and composite is key to fiber-metal laminates (FML). CMT (Cold Metal Transfer) welding has been used for hybrid joints that couple metal pin anchoring with adhesive bonding, but this concept has not ...
Benzoxazine resin and their nanostructured composites cure kinetic by DSC
(Journal of Materials Research, 2013-11-28) [Artigo]
Benzoxazine resins are a new class of thermosetting phenolic resins that have emerged in recent decades, overcoming the traditional properties of epoxy and phenolic resins applied in the aerospace industry. The incorporation ...
Avaliações térmica e reológica da matriz termoplástica PEKK utilizada em compósitos aeronáuticos
(Polímeros, 2008-09-01) [Artigo]
A matriz termoplástica semicristalina PEKK (poli (éter-cetona-cetona)) tem recebido nos últimos anos uma atenção crescente pelas indústrias aeronáutica e espacial, no processamento de compósitos poliméricos avançados. As ...
Influence of cassava starch content and sintering temperature on the alumina consolidation technique
(Journal of the European Ceramic Society, 2009-06-01) [Artigo]
The influence of starch content and sintering temperature on the preparation of alumina bodies were studied. The process was water-based and cassava starch was used as consolidator, binder and pore former. Colloidal ...
Epoxy Composite with Milimetric Carbon Nanotubes
(Journal of Nanoscience and Nanotechnology, 2011-10-01) [Artigo]
Composite of multi-walled carbon nanotubes (MWCNT) and epoxy resin DGEBA were obtained with DDM hardener. The MWCNT were synthesized with length of millimeters by camphor/ferrocene pyrolysis. Different cure temperatures ...
Avaliação dos parâmetros tempo, corrente e pressão na soldagem por resistência elétrica de compósitos PEI/fibras contínuas: influência na resistência mecânica
(Materia-rio de Janeiro, 2015-04-01) [Artigo]
Nowadays, many components applied in the aerospace industry, which had been previously used with thermoset matrix composites, are being replaced by those with thermoplastic matrix, which is mainly due to having better ...
Silver deposition optimization process on ultrananocrystalline diamond applied to nitrate reduction
(Environmental Technology, 2019-07-17) [Artigo]
Nitrate is a serious contaminant of ground and surface water, which cause high concern in the field of health and environmental protection. In this work, a ternary composite of silver/boron-doped ultrananocrystalline ...
Fractographic evaluation of welded joints of PPS/glass fiber thermoplastic composites
(Engineering Failure Analysis, 2019-08-01) [Artigo]
Joints obtained by resistance welding of polyphenylene sulphide (PPS) laminates reinforced with bidirectional glass fiber (GF) fabrics were investigated by fractographic analyses. The welded joints were tested under lap ...