Jose Brito Correia

Jose Brito Correia
Laboratório Nacional de Energia e Geologia | LNEG

PhD in Materials

About

141
Publications
15,824
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2,203
Citations
Citations since 2017
23 Research Items
1140 Citations
2017201820192020202120222023050100150200
2017201820192020202120222023050100150200
2017201820192020202120222023050100150200
2017201820192020202120222023050100150200
Introduction
José Brito Correia Ph.D. (U. Sheffield, UK, 1991) is Principal Investigator with Habilitation at LNEG/ UME (Materials for Energy Unit). Research includes computer simulation of crystals, production of composites via mechanical alloying, consolidation by extrusion/HIP/SPS, characterization with SEM, TEM and XRD, nanostructured materials including carbon nanoparticles , synthesis of photovoltaic and thermoelectric materials. J.B. Correia has large experience in international research projects.

Publications

Publications (141)
Article
A CuCrFeTiV high entropy alloy was prepared and irradiated with swift heavy ions in order to check its adequacy for use as a thermal barrier in future nuclear fusion reactors. The alloy was prepared from the elemental powders by ball milling, followed by consolidation by spark plasma sintering at 1178 K and 65 MPa. The samples were then irradiated...
Article
Full-text available
One of the areas of research on materials for thin-film solar cells focuses on replacing In and Ga with more earth-abundant elements. In that respect, chalcostibite (CuSbS2) is being considered as a promising environmentally friendly and cost-effective photovoltaic absorber material. In the present work, single CuSbS2 phase was synthesized directly...
Preprint
Full-text available
One of the areas of research on materials for thin-film solar cells focuses on replacing In and Ga with more earth-abundant elements. In that respect, chalcostibite (CuSbS2) is being considered as a promising environmentally friendly and cost-effective photovoltaic absorber material. In the present work, single CuSbS2 phase have been synthesized di...
Article
Full-text available
CrNbTaVWx with (x = 1 and 1.7) high entropy alloys have been devised for thermal barriers between the plasma-facing tungsten tiles and the copper-based heat sink in the first wall of fusion nuclear reactors. These novel materials were prepared by ball milling and consolidated by Upgrade Field Assisted Sintering Technology at 1873 K under an applied...
Article
Liquid film migration is of great practical importance in materials engineering. The phenomenon has been shown to depend on thermal gradients and coherency strain, but no single driving mechanism seems capable of justifying the whole array of experimental observations. On the other hand, the inevitable capillarity effects are often disregarded due...
Article
Considering that the synthesis of tetrahedrite-based materials usually uses high purity elements, the evaluation of the direct application of ore samples as raw materials for their synthesis is a pertinent issue. In the present study, multiphase synthetic tetrahedrite samples were mixed with tetrahedrite-tennantite ore samples (in weight ratios of...
Article
There is an urgent need to develop an alternative high-efficiency cooling technology that is affordable and environmentally friendly. Elastocaloric effect has attracted particular attention due to large available latent heat and large adiabatic temperature changes. The primary objective of this study is to control the deformation of NiTi solid-stat...
Article
The present work reports the production and key properties of the CuCrFeTiV high entropy alloy synthetized by mechanical alloying and spark plasma sintering. The milled powders and the as-sintered samples were analysed through scanning electron microscopy, coupled with energy dispersive X-ray spectroscopy and particle induced X-ray emission. Magnet...
Conference Paper
Full-text available
This work describes the main lines of investigation that are underway within LocalEnergy project (http://localenergy.lneg.pt). LocalEnergy is a multidisciplinary Research, Development and Innovation project, involving activities in the field of materials science, geology and renewable energies. These activities are oriented towards the industry and...
Conference Paper
Full-text available
ABSTRACT The development and implementation of energy efficient technologies with low global warming potential requires a continuous innovation in the field of materials for energy. This strategy includes research on the processing of thermoelectric materials based on tetrahedrite. In the present work, it is evaluated the feasibility of the direct...
Presentation
Full-text available
Extended abstract and presentation at the Virtual Conference on Thermoelectrics, VCT 2020, International Thermoelectrics Society (ITS), July 21-23, 2020
Article
Full-text available
In this study, Cu x CrFeTiV (x = 0.21, 0.44, 1 and 1.7 M ratio) high entropy alloys have been devised for thermal barriers between the plasma facing tungsten tiles and the copper-based heat sink in the first wall of nuclear fusion reactors. The high entropy alloys were produced by ball milling the elemental powders, followed by consolidation with s...
Conference Paper
Full-text available
In this study, we propose the direct synthesis of nanocrystalline and single-phase Cu12-x-yFexZnySb4S13-z tetrahedrites, with 0 ≤ x, y ≤ 1 and 0 ≤ z ≤ 0.3, using an powder metallurgical route consisting in a short duration (2 h) high energy milling step followed by a subsequent densification step through hot pressing. Elemental powders of Cu, Fe, Z...
Article
The requirements for the divertor components of future fusion reactors are challenging and therefore a stimulus for the development of new materials. In this paper, WC-Cu composites are studied for use as thermal barrier between the plasma facing tungsten tiles and the copper-based heat sink of the divertor. Composite materials with 50% vol. WC wer...
Article
In this study, Cu x CrFeTiV (x = 0.21, 0.44, 1 and 1.7 M ratio) high entropy alloys have been devised for thermal barriers between the plasma facing tungsten tiles and the copper-based heat sink in the first wall of nuclear fusion reactors. The high entropy alloys were produced by ball milling the elemental powders, followed by consolidation with s...
Article
Full-text available
This work reports on an efficient powder metallurgy method for the synthesis of NiTi alloys, involving mechanical activation of pre-alloyed NiTi2 and elemental Ni powders (NiTi2–Ni) followed by a press-and-sinter step. The idea is to take advantage of the brittle nature of NiTi2 to promote a better efficiency of the mechanical activation process. T...
Article
The copper zinc tin sulfide (CZTS) compound is a promising candidate as an alternative absorber material for thin-film solar cells. In this study, we investigate the direct formation of Cu1.92ZnSnx (Sb1−x )S4 compounds [CZT(A)S], with x = 1, 0.85, 0.70, and 0.50, via a mechanochemical synthesis (MCS) approach, starting from powders of the correspon...
Article
WC-Cu cermets have been devised for thermal barriers between the plasma facing tungsten tiles and the copper-based heat sink in the first wall of nuclear fusion reactors. Composite materials with 50 and 75 v/v% WC have been prepared by hot pressing at 1333 and 1423 K with pressures of 37 and 47 MPa, respectively. Microstructural changes have been i...
Article
The combination of tungsten carbide and copper as a thermal barrier could effectively reduce the thermal mismatch between tungsten and copper alloy, which are proposed as base armour and heat sink, respectively, in the divertor of future fusion reactors. Furthermore, since the optimum operating temperature windows for these divertor materials do no...
Article
Tungsten-tantalum composites have been envisaged for first-wall components of nuclear fusion reactors; however, changes in their microstructure are expected from severe irradiation with helium and hydrogenic plasma species. In this study, composites were produced from ball milled W powder mixed with 10 at.% Ta fibers through consolidation by pulse...
Patent
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...
Article
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 r...
Article
Earth-abundant and nontoxic absorber materials have been extensively studied for thin-film solar cells. 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 t...
Article
Tungsten (W) and its alloys are very promising materials for producing plasma-facing components (PFCs) in the fusion power reactors of the near future, even as a structural part in them. However, whereas the properties of pure tungsten are suitable for a PFC, its structural applications are still limited due to its low toughness, ductile to brittle...
Article
Full-text available
W-Ta Composites Consolidated by Spark Plasma Sintering - Volume 21 Issue S5 - F. Guerreiro, M. Dias, A. Galatanu, J.B. Correia, E. Alves, P.A. Carvalho
Article
Full-text available
Self-lubricant behaviour of copper-carbon nanocomposites: An electron microscopy and atomic force microscopy study - Volume 21 Issue S6 - D. Silva, J. Jeremias, D. Nunes, J.B. Correia, K. Hanada, R. Colaço, P.A. Carvalho
Article
Full-text available
Helium/Deuterium blistering in a W-Tafiber composite consolidated by pulse plasma sintering - Volume 21 Issue S6 - M. Dias, N. Catarino, D. Nunes, N. Franco, M. Rosinski, J.B. Correia, P.A. Carvalho, E. Alves
Article
Composites consisting of tantalum fiber/powder dispersed in a nanostructured W matrix have been consolidated by spark and pulse plasma sintering as well as by hot isostatic pressing. The microstructural observations revealed that the tungsten–tantalum fiber composites consolidated by hot isostatic pressing and pulse plasma sintering presented a con...
Article
Full-text available
The new properties of engineered nanoparticles drive the need for new knowledge on the safety, fate, behaviour and biological effects of these particles on organisms and ecosystems. Titanium dioxide nanoparticles have been used extensively for a wide range of applications, e.g, self-cleaning surface coatings, solar cells, water treatment agents, to...
Conference Paper
Full-text available
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) hig...
Article
Full-text available
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. However, the cost, the abundance and the...
Article
Full-text available
The high melting point, high sputtering threshold and low tritium inventory rendered W as a potentially suitable material in fusion devices. The major problem associated with presently available tungsten grades as structural materials is its brittleness at lower temperatures. This is further worsened by irradiation embrittlement. A strategy for duc...
Article
Full-text available
Tungsten (W) was select for an extensive use in nuclear fusion devices due to its low neutron activation, high melting point and sputtering threshold as well as low hydrogen inventory. Nevertheless, W is brittle at low and moderate temperatures, which results in abnormal thermal stress, component fracture and extra erosion under reactor operation d...
Article
Full-text available
Dispersing nanodiamond (nD) particles in metallic matrices can be achieved by ball milling resulting in metal-diamond composite powders. The matrices have been selected considering the whole range of carbon affinity: copper that shows extremely reduced affinity towards carbon phases, potentially compromising the composite interfaces, and nickel and...
Conference Paper
Full-text available
Due to their interesting properties copper-based materials have been considered appropriate heat sinks for first wall panels in nuclear fusion devices [1]. The reinforcement of a copper matrix with nanodiamond enables to increase the strength and thermal stability [2] of copper improving the performance demanded for long-term application in nuc...
Conference Paper
Full-text available
A microstructure refined to the nanometer scale improves mechanical strength. However, ultra-fine grain metals exhibit low thermal stability, even at moderate temperatures [1], requiring the presence of particle dispersions to delay coarsening by grain boundary pinning. In addition, the concept of a composite can be applied to the context of nanost...
Article
Energetic He+ and D+ ions were implanted into different W–Ta composites in order to investigate their stability under helium and deuterium irradiation. The results were compared with morphological and chemical modifications arising from exposure of pure W and Ta. Special attention was given to tantalum hydride (Ta2H) formation due to its implicatio...
Article
The current magnetic confinement nuclear fusion power reactor concepts going beyond ITER are based on assumptions about the availability of materials with extreme mechanical, heat, and neutron load capacity. In Europe, the development of such structural and armour materials together with the necessary production, machining, and fabrication technolo...
Article
Full-text available
Nanostructured copper-diamond composites can be tailored for thermal management applications at high temperature. A novel approach based on multiscale diamond dispersions is proposed for the production of this type of materials: a Cu-nDiamond composite produced by high-energy milling is used as a nanostructured matrix for further dispersion of micr...
Conference Paper
Full-text available
A microstructure refined to the nanometer scale improves mechanical strength. However, ultra-fine grain metals exhibit low thermal stability, even at moderate temperatures [1], requiring the presence of particle dispersions to delay coarsening by grain boundary pinning. In addition, the concept of a composite can be applied to the context of nanost...
Conference Paper
Full-text available
Nanostructured copper-diamond composites can be tailored for thermal management applications at high temperature. A novel approach based on multiscale diamond dispersions is proposed for the production of this type of materials: a Cu-nDiamond composite produced by high-energy milling is used as a nanostructured matrix for further dispersion of micr...
Conference Paper
Full-text available
A microstructure refined to the nanometer scale improves mechanical strength. However, ultra-fine grain metals exhibit low thermal stability, even at moderate temperatures [1], requiring the presence of particle dispersions to delay coarsening by grain boundary pinning. In addition, the concept of a composite can be applied to the context of nanost...
Article
In this study, the critical milling behaviour of Ni–Ti powder mixtures was evaluated in relation to the effect of atmospheric gases, more specifically to oxygen and nitrogen. Within the experimental conditions used, it is shown that both gases play an important role in the alloying process and that not only oxygen gas reacts with the mechanically a...
Article
Full-text available
A microstructure refined to the nanometer scale originates mechanical property improvements [1]. However ultra-fine grain metals present low thermal stability, requiring the presence of particle dispersions to delay coarsening by grain boundary pinning. Nanoscale dispersions of diamond or graphite offer therefore thermal stability potential, combin...
Article
The major challenge in producing tungsten–nanodiamond composites by ball milling lies in successfully dispersing carbon nanoparticles in the metallic matrix while keeping carbide formation at a minimum. Processing windows for carbide minimization have been established through systematic variation of the nanodiamond fraction, milling energy and mill...
Article
Full-text available
The present work investigates Ni–nanodiamond and Ni–graphite composites produced by mechanical synthesis and subsequent heat treatments. Processing of nickel-carbon nanocomposites by this powder metallurgy route poses specific challenges, as carbon phases are prone to carbide conversion and amorphization. The processing window for carbide preventio...
Article
Full-text available
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 phenomenonby using different types of thermal/mechanical cycles.This work also intends to prove the feasibility of in situ X-ray...
Article
Full-text available
Reinforcement of a copper matrix with diamond enables tailoring the properties demanded for thermal management applications at high temperature, such as the ones required for heat sink materials in low activated nuclear fusion reactors. For an optimum compromise between thermal conductivity and mechanical properties, a novel approach based on multi...
Article
Processing of copper–carbon nanocomposites by mechanical synthesis poses specific challenges as carbon phases are prone to amorphization and exhibit an intrinsically difficult bonding with copper. The present work investigates Cu–nanodiamond (Cu–nD) and Cu–graphite (Cu–G) composites produced by mechanical synthesis and subsequent heat treatments. T...
Article
All the recent DEMO design studies for helium cooled divertors utilize tungsten materials and alloys, mainly due to their high temperature strength, good thermal conductivity, low erosion, and comparably low activation under neutron irradiation. The long-term objective of the EFDA fusion materials programme is to develop structural as well as armor...
Article
Due to their suitable thermal conductivity and strength, copper-based materials have been considered appropriate heat sinks for first wall panels in nuclear fusion devices. However, increased thermal conductivity and mechanical strength are demanded and the concept of property tailoring involved in the design of metal matrix composites advocates fo...
Article
The 2008–2009 work programme of the European research project on nano-structured oxide dispersion strengthened (ODS) reduced activation ferritic (RAF) steels is being organized along the four following programmatic lines: (1) improve the present generation of nano-structured ODS RAF steels; (2) start the industrial fabrication of the present genera...
Article
Four as-processed forms (Plate 16, Plate 6, Rod 20 and Rod 12.5) of the ODS Eurofer 97 EU-batch produced under different thermomechanical conditions have been investigated by scanning nuclear microprobe, scanning and transmission electron microscopy, energy dispersive X-ray spectroscopy, electron backscat-tered diffraction, high-temperature X-ray d...
Article
Tungsten is considered as one of promising candidate materials for plasma facing component in nuclear fusion reactors due to its resistance to sputtering and high melting point. High thermal conductivity is also a prerequisite for plasma facing components under the unique service environment of fusion reactor characterised by the massive heat load,...
Article
In this study, a set of Ti–50 at.% Ni elemental powder mixtures were processed through mechanical alloying (MA). The objectives were to induce during MA the formation of a lamellar microstructure and to apply a design of experiments, based on the Taguchi method, to optimize theMAparameters. Enthalpy measurements associated to the high temperature r...
Article
Nanomaterials have significant technological advantages but their release into the environment also carry potential ecotoxicological risks. Carbon-based nanoparticles and particularly diamond nanoparticles have numerous industrial and medical applications. The aim of the present study was to evaluate the toxic effects of diamond nanoparticles with...
Article
Nanomaterials have significant technological advantages but their release into the environment also carry potential ecotoxicological risks. Carbon-based nanoparticles and particularly diamond nanoparticles have numerous industrial and medical applications. The aim of the present study was to evaluate the toxic effects of diamond nanoparticles with...
Article
Full-text available
Due to their interesting properties copper-based materials have been considered appropriate heat-sinks for first wall panels in nuclear fusion devices. The concept of property tailoring involved in the design of metal matrix composites has led to several attempts to use nanodiamond (nDiamond) as reinforcement. In particular, nDiamond produced by de...
Article
Full-text available
Tungsten is considered as one of promising candidate materials for plasma facing component in nuclear fusion reactors due to its resistance to sputtering and high melting point. High thermal conductivity is also a prerequisite for plasma facing components under the unique service environment of fusion reactor characterised by the massive heat load,...