http://publicationslist.org/data/filipe.neves/atom.xml Filipe Neveshttp://publicationslist.org/filipe.neves$basepathfavicon.icoRecent additions to Filipe Neves's PublicationsList.org pagehttp://publicationslist.org/publications.png2016-05-27T10:07:49Z http://publicationslist.org/filipe.neves/refid42 2016-05-27T10:07:42Z

A presente invenção descreve o processo de fabrico da camada absorsora, um dos constituintes de uma célula fotovoltaica de filmes finos, formada pelo composto Cu2(Sn1-xMx)(SySe1-y)3 em que M = Ge ou Si, x e y entre 0 e 1. Este processo é caracterizado por não utilizar tecnologias com vácuo, ser de baixo custo e ser baseado na tecnologia dos pós. De acordo com a presente invenção, o proce...<br/><br/>Filipe Neves, José Brito Correia (2016) <i>Portuguese Patent PT 107626 B</i><br/>

http://publicationslist.org/filipe.neves/refid40 2016-01-21T15:33:21Z

Earth-abundant, nontoxic absorber materials in thin-film solar cells are being proposed. One of the most viable candidate materials for solar absorber applications is Cu2SnS3 (CTS). The feasibility of producing fully dense CTS materials by combining mechanical alloying (MA) and spark plasma sintering (SPS) is reported for the first time. X-ray diffraction analysis revealed the formation of the CTS...<br/><br/>F.Neves, J.B.Correia, K.Hanada (2016) <i>Materials Letters</i> 164: 165-168<br/>

http://publicationslist.org/filipe.neves/refid41 2016-05-19T15:28:43Z

Cu2SnS3 (CTS) and Cu2Sn0.83Ge0.17S3 (CTGS) compounds were successfully prepared by a powder technology using a combination of mechanical alloying (MA) and spark plasma sintering (SPS). Structural, compositional and optical properties were studied. A true alloy with composition similar to the starting constituents was formed after 2 h of MA at 400 rpm. Subsequently, SPS was performed at 600
C for ...<br/><br/>F. Neves, J.B. Correia, K. Hanada, L.F. Santos, R. Gunder, S. Schorr (2016) <i>Journal of Alloys and Compounds</i> 682: 489 - 494<br/>

http://publicationslist.org/filipe.neves/refid38 2013-09-17T09:33:25Z

F. Neves, V. Livramento, I. Martins, L. Esperto, M. Santos, J.B. Correia, K. Muska, T. Holopainen (2013) <i>Microscopy and Microanalysis</i> 19 (S4): 101-102<br/>

http://publicationslist.org/filipe.neves/refid39 2013-09-17T09:43:43Z

The Cu2ZnSnS4 (CZTS) solar cells have numerous advantages that could lead to its massive use as a low cost PV solar cell device: (a) it has a direct bandgap and an absorption coefficient >104 cm−1; (b) its band gap has been predicted to be 1.5 eV; (c) its crystallographic structure can accept some shifts from the stoichiometric composition; (d) high abundance and non-toxicity of the contained el...<br/><br/>F. Neves, V. Livramento, I. Martins, L. Esperto, M. Santos, J.B. Correia, K. Muska, T. Holopainen (2013) <i>Abstracts Book of EUROMAT 2013 – European Congress and Exhibition on Advanced Materials and Processes, 8 – 13 September 2013, Sevilla, Spain</i> <br/>

http://publicationslist.org/filipe.neves/refid35 2013-02-19T10:39:32Z

F. Neves, F.M. Braz Fernandes, I. Martins, J. B. Correia (2012) <i>Powder Metallurgy</i> 55: 4 268-272<br/>

http://publicationslist.org/filipe.neves/refid36 2013-02-19T10:46:15Z

The structural evolution that takes place during the homogenization heat treatments of powder metallurgical Ni-Ti alloys was studied by in situ synchrotron diffraction. It is proposed to get a deeper understanding of this phenomenon by using different types of thermal/mechanical cycles. This work also intends to prove the feasibility of in situ X-ray diffraction studies during thermomechanical cyc...<br/><br/>F. Neves, J. B. Correia, I. Martins, F.M. Braz Fernandes, K.K. Mahesh, A. Stark, N. Schell (2012) <i>Ciência & Tecnologia dos Materiais</i> 24: 3/4 157-160<br/>

http://publicationslist.org/filipe.neves/refid37 2013-02-19T10:50:54Z

The design and synthesis of high-efficiency materials to convert solar to electrical energy is an increasingly important research field. Within the photovoltaic technologies, crystalline Si have an 80% share while the remaining 20% are mostly thin film solar cells based on Cu(In,Ga)(S,Se)2 (CIGSSe) and CdTe [1,2]. However, we must keep in mind the cost, abundance and environmental impact of the el...<br/><br/>F. Neves, V. Livramento, I. Martins, L. Esperto, M. Santos, J.B. Correia, K. Muska, T. Holopainen (2012) <i>SPMicros 2012 Abstracts Book – 46th Congress of the Portuguese Society for Microscopy,</i> <br/>

http://publicationslist.org/filipe.neves/refid32 2011-06-15T08:17:48Z

F. Neves, F. M. Braz Fernandes, I. Martins, J. B. Correia (2011) <i>Journal of Alloys and Compounds</i> 509S: S271–S274<br/>

http://publicationslist.org/filipe.neves/refid34 2012-04-16T14:04:21Z

The Mechanical alloying (MA) of the Ni-Ti system has been the subject of a considerable number of investigations since the late 1980s. Although it is known that careful milling practice can reduce the overall level of contamination to well within acceptable limits, relatively little attention has been paid to the effects that different levels of contamination (mainly the one arising from oxygen an...<br/><br/>F. Neves, F.M. Braz Fernandes, I. Martins, J. B. Correia (2011) <i>CD Conference Proceedings EUROMAT 2011 – European Congress and Exhibition on Advanced Materials and Processes</i> <br/>

http://publicationslist.org/filipe.neves/refid13 2010-04-05T12:03:29Z

F Neves, F M Braz Fernandes, J B Correia (2010) <i>Materials Science Forum</i> <i></i> <i>http://www.scopus.com/inward/record.url?eid=2-s2.0-75649086582&partnerID=40&md5=2e7c01dce7f83bba655bcf31e14ad08b</i> 636-637: 544-549<br/>

http://publicationslist.org/filipe.neves/refid12 2010-04-05T12:04:17Z

F Neves, F M Braz Fernandes, I Martins, J B Correia, M Oliveira, E Gaffet, N Boucharat, M Lattemann, J Suffner, H Hahn (2010) <i>Materials Science Forum</i> <i></i> <i>http://www.scopus.com/inward/record.url?eid=2-s2.0-75649102854&partnerID=40&md5=61a47851d4407ea2c2cc0d818a57c003</i> 636-637: 928-933<br/>

http://publicationslist.org/filipe.neves/refid1 2010-03-25T15:59:40Z

V.Livramento, J.Brito Correia, F.Neves, N.Shohoji and C.M.Rangel (2010) <i>Materials Science Forum</i> 636/637: 934-940<br/>

http://publicationslist.org/filipe.neves/refid3 2010-03-25T16:25:26Z

The phase transformation behaviour of bulk nanostructured NiTi shape memory alloys, produced by an innovative approach called MARES (mechanically activated reactive extrusion synthesis), was investigated using in situ x-ray diffraction and differential scanning calorimetry measurements. For the experimental conditions used, a suitable adjustment of the NiTi matrix composition was achieved after ag...<br/><br/>F Neves, F M B Fernandes, I Martins, J B Correia, M Oliveira, E Gaffet, T Y Wang, M Lattemann, J Suffner, H Hahn (2009) <i>SMART MATERIALS & STRUCTURES</i> <i></i> <i></i> 18: 11 <br/>

http://publicationslist.org/filipe.neves/refid29 2010-04-09T14:37:35Z

In the present study, structural characterization of NiTi smart shape memory alloys (SMAs), produced by an alternative powder metallurgy approach named mechanically activated reactive forging (MARFOS), was carried out by means of transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). It was observed that MARFOS materials had a multiphase nanocrystal...<br/><br/>F. Neves, F.M. Braz Fernandes, I. Martins, J. B. Correia, M. Oliveira, E. Gaffet, N. Boucharat, M Lattemann, J Suffner, H Hahn (2009) <i>Proceedings of the IV ECCOMAS Thematic Conference on SMART STRUCTURES AND MATERIALS (SMART’09), 13-15 July, Porto, Portugal</i> 469<br/>

http://publicationslist.org/filipe.neves/refid20 2011-01-10T09:27:30Z

F. Neves, F.M. Braz Fernandes, I. Martins, J.B. Correia, M. Oliveira, E. Gaffet, T.-Y. Wang, M. Lattemann, J. Suffner, H. Hahn (2009) <i>ESOMAT 2009 - The 8th European Symposium on Martensitic Transformations</i> 05023<br/>

http://publicationslist.org/filipe.neves/refid14 2010-04-05T12:05:55Z

F Neves, I Martins, J B Correia, M Oliveira, E Gaffet (2008) <i>Materials Science Forum</i> <i></i> <i>http://www.scopus.com/inward/record.url?eid=2-s2.0-60349131983&partnerID=40&md5=c3ed46175fad352f7b34fb16648ddef5</i> 587-588: 625-629<br/>

http://publicationslist.org/filipe.neves/refid6 2010-03-25T16:25:26Z

Mechanically activated reactive extrusion synthesis (MARES), as an innovation in powder sintering, was used for the first time to produce NiTi alloys. Equimolar powder mixtures of elemental Ni and Ti were firstly mechanically activated for 4 h and then extruded at relatively low temperatures (between 300 and 600 degrees C). No intermetallic phase formation was obtained after mechanical alloying. I...<br/><br/>F Neves, I Martins, J B Correia, M Oliveira, E Gaffet (2008) <i>MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING</i> <i></i> <i></i> 473: 1-2 336-341<br/>

http://publicationslist.org/filipe.neves/refid15 2010-04-05T12:10:45Z

F Neves, A Cunha, I Martins, J B Correia, M Oliveira, E Gaffet (2008) <i>Microscopy and Microanalysis</i> <i></i> <i>http://www.scopus.com/inward/record.url?eid=2-s2.0-53349121232&partnerID=40&md5=d23a12065ef2d1de5956da2d11775130</i> 14: SUPPL. 3 13-16<br/>

http://publicationslist.org/filipe.neves/refid30 2010-04-09T14:50:36Z

F. Neves, F. M. Braz Fernandes, I. Martins, José B. Correia, M. Oliveira, E. Gaffet, N. Boucharat, J. Suffner and H. Hahn (2008) <i>Proceedings of NANO - 2008 – 9th International Conference on Nanostructured Materials, 1-6 June 2008, Rio de Janeiro, Brazil</i> <br/>

http://publicationslist.org/filipe.neves/refid5 2010-03-25T16:25:26Z

The production of NiTi alloys through mechanically activated reactive forging synthesis (MARFOS) of elemental powder mixtures with equiatomic composition has been investigated for the first time. The short duration of mechanical activation (4 h) successfully produced powder mixtures capable of being hot deformed at relatively low temperatures. As a consequence, a bulk product constituted by interm...<br/><br/>F Neves, I Martins, J B Correia, M Oliveira, E Gaffet (2008) <i>INTERMETALLICS</i> <i></i> <i></i> 16: 7 889-895<br/>

http://publicationslist.org/filipe.neves/refid4 2010-04-05T12:06:45Z

Copper nitride films prepared by sputtering have applications such as optical data storage material. insulation barriers in micro electronic devices and coatings for mechanical applications. The present study examines nanocomposites prepared by mechanical alloying of copper with copper nitride under nitrogen atmosphere, at room temperature, in order to establish a comparison with properties of Cu-...<br/><br/>V Livramento, J B Correia, F Neves, R Calinas, M T Vieira (2008) <i>ADVANCED MATERIALS FORUM IV</i> <i></i> <i></i> 587-588: 177-181<br/>

http://publicationslist.org/filipe.neves/refid9 2010-03-25T16:25:27Z

(Ti-48Al)-based intermetallics were synthesized by a combination of mechanical alloying, sputtering and hot isostatic pressure techniques. Blended elemental powders of TiH2 and Al with nominal composition TiH2-48Al were mechanically alloyed for different periods of time. The powders were then coated with Ti and Ag and subsequently hot isostatically pressed at 900 degrees C with a maximum pressure ...<br/><br/>F Neves, N Duarte, B Trindade (2007) <i>JOURNAL OF ALLOYS AND COMPOUNDS</i> <i></i> <i></i> 434: 378-382<br/>

http://publicationslist.org/filipe.neves/refid7 2010-03-25T16:25:27Z

In the present Study, an alternative approach to the synthesis of TiNi alloys through powder metallurgy was successfully conducted by mechanically activated reactive extrusion synthesis (MARES) using elemental powders. The production of dense bodies was essentially dependent on the amount of intermetallic phases formed prior to reactive extrusion and on the densification temperature. The mechanica...<br/><br/>F Neves, I Martins, J B Correia, M Oliveira, E Gaffet (2007) <i>INTERMETALLICS</i> <i></i> <i></i> 15: 12 1623-1631<br/>

http://publicationslist.org/filipe.neves/refid8 2010-03-25T16:25:27Z

Thin layers of silver and titanium were deposited onto commercial Ti-Al-48 particles by magnetron sputtering prior to their consolidation by hot isostatic pressing and subsequent heat treatment. Based on picnometry and electron probe microanalysis results, average values of 1.5 and 2.5 at.%, respectively, were obtained for the silver and titanium contents in the coated particles. The surface modif...<br/><br/>F Neves, N Duarte, B Trindade (2007) <i>JOURNAL OF MATERIALS SCIENCE</i> <i></i> <i></i> 42: 12 4197-4204<br/>

http://publicationslist.org/filipe.neves/refid2 2010-03-25T16:19:53Z

The objective of this work was to study a new methodology of production for gamma-TiAl based titanium aluminides. Two routes were selected: in the first one, mixtures of elemental powders with nominal compositions TiH2–(48-x)AlxAg (x=0, 2 and 4 at %) were mechanically alloyed in a planetary ball mill under different rotation speeds and total milling times, followed by consolidation through Hot I...<br/><br/>F Neves (2005) <br/>

http://publicationslist.org/filipe.neves/refid10 2010-04-05T12:07:47Z

The present paper describes part of the work that is being carried out to investigate the formation of Ti-Al-Ag nanostructured intermetallic compounds using Mechanical Alloying (MA). Mixtures of elemental powders with nominal compositions 52TiH(2)-(48-x)AlxAg (x = 0, 2 and 4 at. %) were milled for 25h at 500rpm in a planetary ball mill. The MA led to the formation of a TiH2 (Al) solid solution coe...<br/><br/>F Neves, M H Carvalho, B Trindade (2004) <i>ADVANCED MATERIALS FORUM II</i> <i></i> <i></i> 455-456: 505-509<br/>

http://publicationslist.org/filipe.neves/refid16 2010-03-29T12:29:18Z

F Neves, M H Carvalho, B Trindade (2003) <i>Materials Technology</i> <i></i> <i>http://www.scopus.com/inward/record.url?eid=2-s2.0-0347948252&partnerID=40&md5=f217c351eff6aa487b93f528c224f8aa</i> 18: 4 224-229<br/>

http://publicationslist.org/filipe.neves/refid18 2010-04-09T15:04:46Z

F Neves, T Marcelo, M H Carvalho (2002) <i>Key Engineering Materials</i> <i></i> <i>http://www.scopus.com/inward/record.url?eid=2-s2.0-0036429007&partnerID=40&md5=f21d36c30098db5c7c518f7de16b8bc2</i> 230-232: 80-83<br/>

http://publicationslist.org/filipe.neves/refid17 2010-04-09T15:02:11Z

F Neves, T Marcelo, M H Carvalho (2002) <i>Key Engineering Materials</i> <i></i> <i>http://www.scopus.com/inward/record.url?eid=2-s2.0-18744433254&partnerID=40&md5=6258951a2a21a8144909e53ee73a7a1e</i> 230-232: 243-246<br/>

http://publicationslist.org/filipe.neves/refid31 2010-04-09T14:55:14Z

F. Neves, T. Marcelo, H. Carvalho, B. Trindade, M.T. Vieira (2001) <i>CD Conference Proceedings EUROMAT 2001 – 7th European Conference on Advanced Materials and Processes, 10-14 June 2001, Rimini, Italy</i> <br/>

http://publicationslist.org/filipe.neves/refid19 2010-04-09T15:05:31Z

F Neves, T Marcelo, M H Carvalho (2000) <i>Key Engineering Materials</i> <i></i> <i>http://www.scopus.com/inward/record.url?eid=2-s2.0-0033661435&partnerID=40&md5=139d092a676dca68244c337ffd58bee0</i> 188: 27-36<br/>

http://publicationslist.org/filipe.neves/refid33 2010-11-18T10:15:40Z

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