Tailoring through Colloidal Processing

   

 
Electrochimica Acta 8th July. New Paper online. Z. Gonzalez, J.Yus, A.Caballero, J. Morales, A.J. Sanchez-Herencia and B. Ferrari, “Electrochemical performance of pseudo-capacitor electrodes fabricated by Electrophoretic Deposition inducing Ni(OH)2 nanoplatelets agglomeration by Layer-by-Layer”, Electrochim. Acta, 247 doi:10.1016/j.electacta.2017.07.043 (2017).
It presents the tuning of Ni(OH)2 surfaces with polyelectrolytes following a Layer-by-Layer (LbL) methodology and fixing the conditions of the EPD process. NiO films with a stable and extremely open macroporous structure were processed to coat Ni foams, improving the capacitive performance to values of specific capacitances of 650 F/g.

 
Journal of Alloys and Compounds

7th July. New Paper online. M.Dios, Z. Gonzalez, P.Alvaredo, R.Bermejo, E. Gordo and B. Ferrari, “Novel colloidal approach for the microstructural improvement in Ti(C,N)/FeNi cermets”, J. Alloys Compd. 724 (15) doi:10.1016/j.jallcom.2017.07.034 (2017).
It is focused on the processing of Ti(C,N)-based cermets using fine powders (1–3 μm) in suspension. By combining colloidal and powder metallurgy techniques the uniformity of the phase distribution and its reactivity is promoted, leading to 99.9% dense cermets with Hardness values as high as 1300HV30.


 

28th June, Our team has participated in the VI edition of the "Jornada de Jóvenes Investigadores (Young Researchers Day and Contest)" organized at the ICV-CSIC and supported by the Spanish Ceramic Society (SECV).

Miguel de Dios, overcoming the technological barriers, presented the paper entitled "Mechanical characterization and fractographic analysis of Ti(C, N)-FeNi cermets", with some results he obtained during his 3 months stay at Montanuniversität (Austria) working with Dr. Raul Bermejo .

Joaquín Yus presented the paper "Studies ion the electrochemical behaviour for Core/Shell Ni based particles, processed and sintetized by colloidal techniques" including some of his recent results in colloidal processing of supercapacitors.


 

23th June, He have received the visit of our colleague from France Claudine Filiâtre She is an spetiallist in Chemistry at Surfaces in the group “Matériaux et Surfaces Fonctionnalisés” of the Institute UTINAM – UMR CNRS 6213, at the University of Bourgogne Franche-Comté. After a productive discussion of the on going works of our group, some of them in common, she presented at the Institute some of their recent advances on transport and adhesion of particles funcionalizated with cationic surfactants or with a layer by layer (LbL) polyelectrolyte assembly in the conference entitled "Deposition and assembly of particles and polyelectrolytes: Influence of surfactants, type of polyelectrolyte, cations and pH".

 

22th June, Joaquín Yus has participated in the XIII National Meeting on Electroceramics hold in Cuenca. He presented the oral communication entitled "Estudio de las Propiedades Electroquímicas de Nanopartículas de NiO/Ni tipo Core/Shell Sintetizadas y Procesadas por Técnicas Coloidales".

 

6th June. The group has participated in the VI National and the 1st Iberoamerican Meeting of Powdermetallugy. The meeting was hold in Ciudad Real from 7th to 11th of June, being Begoña Ferrari was one of the chairs. The meeting has gained great interest in local and regional press media [media 1] [ media 2] [ media 3] [ media 4].

Javier Sánchez-Herencia presented the work entitled "Dispersión y estabilidad de suspensiones de partículas submicrónicas de W en agua para su!procesamiento por técnicas coloidales"

Miguel de Dios presented the communication entitled "Influencia del procesamiento en las propiedades mecánicas de CERMETS Ti(C,N)-FeNi"

Begoña Ferrari presented the work "Nuevos films biodegradables de PLDA/Mg-HA procesados por colaje en cinta"


 

1st June. Miguel de Dios presented the communication entitled "Mechanical characterization of Ti(C,N)-based cermets fabricated through different colloidal processing routes" by M.Dios, I. Kraleva, Z. González, P. Alvaredo, B. Ferrari, E. Gordo, R. Bermejo at the International Conference of Refractory Metals and Hard Materials hold during the 19th Plansee Seminar in Reutte, Austria.


 

18th May. New Paper online. Z. Gonzalez, C. Filiatre, C.C. Buron, A.J. Sanchez-Herencia and B. Ferrari, “Electrophoretic Deposition of Ni(OH)2 Nanoplatelets Modified by Polyelectrolyte Multilayers: Study of the Coatings Formation in a Laminar Flow Cell”, J. Electrochem. Soc., 164 (7) doi: 10.1149/2.0801707jes (2017).

It presents the characteriztion of the particle surface modification of nanostructured Ni(OH)2 films with alternative monolayers of Polyethylenimine (PEI) and Polyacrylic Acid (PAA).


 

3rd May. Welcome to Macarena García who has joined to make the PhD supported by a Researchers Training grant associated to the ING4MATER project. She will work on the colloidal processing of tungsten based composites and their mechanical characterization in collaboration with the Politecnic University of Madrid.


 

30th April. Farewell to Ana Ferrandez is to spent three months working at the Prof. Aldo Boccacini´s Group in the Institute of Biomaterials (University of Erlangen-Nurembergof) to characterize new composites she has developed in her Thesis which can serve as tissue engineering scaffolds. The stay is supported by the JECS Trust by a mobility action entitled "In vitro studies of HAp/PLA materials processed by colloidal techniques and designed by additive manufacturing".

 

16th April. Farewell to Zoilo Gonzalez is to spent three months working with Prof. Catherine Henrist at the Group of Research in Energy and ENvironment from MATerials - GREENMAT (University of Liege) on the characterization of the electrocatalithic response of nano-TiO2 coatings. This research stay is suported by the JECS Trust by a Frontiers of Research project.

 

7th April. New Paper online. N.I. Vazquez, Z. Gonzalez, B. Ferrari and Y. Castro, “Synthesis of mesoporous silica nanoparticles by sol–gel as nanocontainer for future drug delivery applications”, B. Soc. Esp. Ceram. Vid., doi: 10.1016/j.bsecv.2017.03.002 (2017).

It is focused on the synthesis of silica carriers by sol–gel from tetraethyl orthosilicate (TEOS) as precursor of silica with cetyltrimethylammonium bromide (CTAB) as pore generating agent.


 
3th April.Welcome to Guillermo Frias who has joined our group as technisian supported by the "Comunidad de Madrid" (Regional Governemnt ) grants for hiring technicians suported by the European Commision through the Youth Employment Iniciative (YEI). He will be at the lab for at least two years involved in most of the research activities.

 

21st March. New Paper online. E. Molero, B. Ferrari, A.J. Sanchez-Herencia, E. Gordo, P. Colombo, “ Ti/Ti3SiC2(/TiC) bulk and foam composites by pyrolysis of polycarbosilane and TiH2 mixtures”, Adv. Eng. Mater., 1600700. doi:10.1002/adem.201600700 (2017). It presents the shapping of Porous Titanium bodies reinforced with MAX phases from slurries and emulsions.


 

17th February. Dr. Begoña Ferrari with Prof. Aldo R. Boccaccini and Dr. Laxmidhar Besra are guest editing a special issue on "Electrophoretic Deposition" in the open access journal "Coatings" (http://www.mdpi.com/journal/coatings/special_issues/electrophor_depos). It has started the Call for Papers (PDF) with a deadline for manuscript submissions on 30 June 2017. Any specialist in the subject is invited to submit its papers to this special issue in OPEN ACCESS format (free for readers, with publishing fees paid by authors or their institutions).


 

2nd February.  We wellcome back to A. Javier Sánchez-Herencia who has quit his position as Deputy Vicepresident at the CSIC headquarters and is resuming his researching activity at the group.


 
FebruaryNew Paper Published.M. Dios, Z. Gonzalez, E. Gordo, B. Ferrari, “Chemical precipitation of nickel nanoparticles on Ti(C,N) suspensions focused on cermet processing”, Int. J. Refract. Met. Hard Mater., 63, 2-8 (2017) doi:10.1016/j.ijrmhm.2016.08.009 (2017). It presents a one-pot route through colloidal techniques to synthesize nanoparticles of metallic Ni on Ti(C,N) bigger grais on a core-shell arrangement and further processing of compacts with improved microstructural homogeneity by slip casting.

 

1st January. Welcome to Dr. Zoilo González to the Colloidal’s team. He has joined our research group as Post-doc Researcher, after the long collaboration maintained with us during the last four years, while he has belonged to the R+D department of the company HISBALIT, S.A.
He is to lead the research line on the synthesis and colloidal processing of nanostructures based on oxide semiconductors for the storage and generation of , contributing to the group research with his “Frontiers of research” project. In this line he is co-supervising the research work of a PhD student, J. Yus, in “Ceramic-based supercapacitors shaped by Colloidal Processing”. Moreover, he will also collaborate to develop specific tasks of the ING4MATER project and the MULTIMAT Challenge program (www.multimat.org).


2017

24th December. We wish all of you a Merry Christmas plenty of happyness and a very happy year 2017.


 

22nd December. Miguel de Dios has returned from his stay in the Institut für Struktur- und Funktionskeramik,  Montanuniversität Leoben (Austria) where he has been testing, under the supervisión of Dr. Raul Bermejo, the mechanical response of the materials he has designed and processed during his PhD research. The development of new hard metal formulations, with the use of Fe-based binders, is framed in the ING4MATER and MITICO projects in a fruitful and long collaboration (more than 6 years) between Dr. Elena Gordo, from the Grupo de Tecnología de Polvos, UC3M, and Dr. Begoña Ferrari, from the Tailoring throught Colloidal processing group, at the ICV-CSIC.


 

11th November Dr. Begoña Ferrari is chairing the VI Congreso Nacional de Pulvimetalurgia y I Congreso Iberoamericano de Pulvimetalurgia (www.vicnp.e) with Dr. Gemma Herranz (UCLM) and Dr. Jose Maria Cabrera (UPC). The Powder Technologies for Ceramic and Metal Processing will be diffused together for the first time!!! The Comité Español de Pulvimetalurgia, CEP-EMPA, and the Sociedad Española de Cerámica y Vidrio, SECV (www.secv.es) sponsor the initiative. Abstract submission is now open. We will meet at Ciudad Real on 7-9 June!!.


 
September. New Paper Published. Z. Gonzalez, B. Ferrari, A.J. Sanchez-Herencia, A. Caballero, J. Morales. “Use of Polyelectrolytes for the Fabrication of Porous NiO Films by Electrophoretic Deposition for Supercapacitor Electrodes”, Electrochim. Acta, 211, 110–8 DOI: 10.1016/j.electacta.2016.06.014

 
23rd August. Begoña Ferrari presented the communication entitled "Inducing flocculation of TiN nanoparticles during deposition through their steric stabilization in non-aqueous suspensions" by B. Ferrari, Z. Gonzalez, C. Mendoza, E. Gordo, Y. Castro (link PDF) at the symposium Combined Electro and Electrophoretic Deposition for Advanced Materials Synthesishold during the 67th Annual Meeting of the International Society of Electrochemistry at The Hague

 
Details

August. New Publications. E. Gordo, R.G. das Neves, B. Ferrari, A. Jimenez-Morales, A. Lima, A.C. Alves, A. M. Pinto, F. Toptan, “Corrosion and tribocorrosion behavior of Ti-alumina composites”, 3rd Conference on Powder Processing Consolidation and Metallurgy of Titanium, ISBN: 978-303835539-7, Key Eng. Mater., 708, 28-37 (2016).
DOI: 10.4028/www.scientific.net/KEM.704.28

B. Ferrari, E. Molero, A.J. Sanchez-Herencia, R. Das Neves, E. Gordo, “Shaping strategies for porous Ti fabrication throughout colloidal chemistry”, 3rd Conference on Powder Processing Consolidation and Metallurgy of Titanium, ISBN: 978-303835539-7, Key Eng. Mater., 708, 406-412 (2016).
DOI: 10.4028/www.scientific.net/KEM.704.406


 

 

2nd June. Great participation of our group in the 229th ECS Meeting held in San Diego (EEUU) with two oral presentations.

- “Capacitance Improvement of Semiconductor Electrode by LbL Modification” presented in Joint General Session (Batteries and Energy Storage and Fuels, Electrolytes, and Energy) Z. Gonzalez, B. Ferrari, A.J. Sanchez-Herencia. A. Caballero and J. Morales.

- “EPD: From order to Chaos by the LbL Modification of the particles Surfaces” presented in Electrophoretic Deposition Symposium. Z. Gonzalez, C. Filiatre, Y. Castro, C. Mendoza, A.J. Sanchez-Herencia and B. Ferrari.  


 
May. New Paper Published. M.Dios, Z. Gonzalez, E.Gordo and B. Ferrari. “Semiconductor-metal core-shell nanostructures by colloidal heterocoagulation in aqueous medium”, Mater. Lett. 180, 327–31(doi: 10.1016/j.matlet.2016.05.179)

 
3rd May. Congratulations to Dr. Zoilo González who has achieved a Frontiers of Research project from the Journal of the European Ceramic Society Trust. The aim of the proyect is the development of innovative photoactive coatings by colloidal processing techniques.

 

 

 

 
Cover image Journal of the European Ceramic Society

1st February. Dr. Begoña Ferrari is one of the co-editors of the special issue of the Journal of the European Ceramic Society, Vol. 32, num. 2, 2016 (DOI: 10.1016/j.jeurceramsoc.2015.08.026). This special issue in JECS collects a series of papers written by experts in the field of EPD applied to ceramic materials.
Two new manuscripts describing results of the group have been published in this issue:

C. Mendoza, Z. Gonzalez, Y. Castro, E. Gordo, B. Ferrari, “Improvement of TiN nanoparticles EPD inducing steric stabilization in non-aqueous suspensions”, J. Eur. Ceram. Soc., 32 (2) 307-317 (2016).
DOI: 10.1016/j.jeurceramsoc.2015.06.023

F. Frajkorova, E. Molero, P. Montero, M. C. Gomez-Guillen, A.J. Sanchez-Herencia, B. Ferrari, “Biodegradable bi-layered coatings shaped by dipping of Ti films followed by the EPD of gelatin/hydroxyapatite composites”, J. Eur. Ceram. Soc., 32 (2) 343-355 (2016).
DOI: 10.1016/j.jeurceramsoc.2015.07.005


 

25th Jan. Thesis Defense. Esther Molero defended at the ICV her PhD Thesis entitled: "Aditivos de procesamiento en el conformado de estructuras porosas: relevancia de la sinergia partícula-gel - Processing Additives to Shape Porous Structures: Relevance on the Particle-Gel Sinergy".
The international evaluation committee was composed by Prof. David Tudela (UAM), Prof. Pedro Miranda (UNEX) Dr. Emilio López (Element Six, England), Dr. Sophia Tsipas (UC3M) and Dr. Berta Moreno (ICV-CSIC), who granted Esther´s thesis report and exposition with the Cum Laude and International mentions. Congratulations!!

  2016

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