Encapsulation Process of Luminescent beryllium, magnesium, calcium, strontium or barium doped cerium (III) aluminate encapsulated with TiO2 and its usages
Processes National
Ferreira, José; Zurba, Nadia
The present invention relates to luminescent beryllium, magnesium, calcium, strontium or barium doped cerium (III) aluminates encapsulated with TiO2, which inorganic nanomaterials have new multifunctional properties, namely with antimicrobial, antibacterial and water resistance photocatalytic activity. These aluminates encapsulation pro...Fast method of preparing porous ceramic artifacts
Processes InternationalNational
Segadães, Ana; Morelli, Márcio; Zurba, Nadia
The present invention is concerned with the preparation method, fast and at room temperature, of a very porous new ceramic material, that combines fast setting of magnesium phosphate cements with the gas evolution that occurs during carbonates dissociation in acidic media. The mixture of dry powders can be commercialized alr...Feasibility method for the production of stoneware ceramics by slip casting from clayey shales based on smectites paligorskites and sepiolites
Processes National
Ferreira, José
The present invention relates to a method for enabling the manufacture of stoneware ceramics by slip casting from clay rich sedimentary rocks comprising very fine kaolinite-based particles and other minerals from the group of smectites (bentonite, illite, montmorillonite) and the group of paligorskites and sepiolites. The pr...Manufacturing technique of textured superconducting materials by electrical assisted laser floating zone
Processes National
Costa, Florinda; Vieira, Joaquim; Silva, Rui; Carrasco, Maria
The present invention relates to the solidification process control technology of superconductive ceramic materials of the Bi-Sr-Ca-Cu-O system by Laser-Floating-Zone (LFZ) through application of electric current during fibers growth.The high thermal gradient associated with the LFZ technique results in a partial alignment o...Materials customization method by diagnosis of biofunctionality of retinal photoreceptor cells and biomedical equipment
Processes National
Fernandes, Maria; Zurba, Nadia; Leite, Eugénio; Fredel, Márcio; Nogueira, António
The present invention relates to a new biomedical equipment and materials customization method based on the diagnosis of biofunctionality of photoreceptor cells, by performing ophthalmic tests of users chromatic vision, in an interactive and non-invasive way, in the “Integrated Cabin for Vision Clinical Analysis” equ...Metallic Mg oxygen diffusion barrier diffusion applied for electronic devices
Processes InternationalNational
Lourenço, Armando ; Rauwel, Erwan
The present invention provides a method for the production of microelectronic devices that uses a thin metallic Mg layer as oxygen diffusion barrier. This method prevents the oxygen diffusion into the substrate during the growth process of oxide thin films and/or prevents the oxygen escape from the substrate into the processing environm...Method for Obtaining na Extract Rich in Triterpenic Acids From Eucalyptus Barks
Processes InternationalNational
Domingues, Rui ; Barros, Carmen; Silvestre, Armando; Neto, Carlos; Silva, Carlos;
The present invention relates to a method of obtaining extracts having very high contents (up to 98%) of triterpenic acids, mainly oleanolic and ursolic acids, from Eucalyptus barks. The method involves the solid-liquid extraction of the bark with organic solvents, preferably hexane, and the fractionation of the crude extract by means o...Method for the preparation at low temperatures of ferroelectric thin films, the ferroelectric thin films thus obtained and their applications
Processes InternationalNational
Vilarinho, Paula ; Wu, Aiying; Calzada, Maria; Rioboo, Ricardo; Bretos, Ignos
A processing technology for the fabrication at low temperatures of ferroelectric crystalline oxide thin films, among others PbZrxTi1-xO3 (PZT) (<400 ºC for PZT) with ferroelectric properties appropriate for integration in devices is herein disclosed. The method is also valid for the fabrication of ferroelectric thin film...Method of forming an oxide thin film
Processes International
Pinna, Nicola; Rauwel, Erwan
A thin oxide film is formed by atomic layer deposition (ALD) onto a substrate by exposing the substrate to a first precursor comprising a metal alkoxide or amide or heteroleptic derivatives thereof and subsequently exposing the substrate to a second precursor comprising an ALD compatible carboxylic acid or carboxyl acid derivative compo...Method of producing macroporous ceramics based on foaming agents action and starch gelling properties
Processes National
Ferreira, José; Lemos, Isabel
The present invention relates to a new process for manufacturing macroporous ceramics with average pore sizes greater than 100 microns and porous structures suitable for a variety of applications as bone grafts, filtration, thermal insulation, gas burners, catalyst supports, etc.The process relies on the addition of surfacta...Preparation method of polymer-based composite porous structures for tissue engineering application
Processes National
Fernandes, Maria; Vilarinho, Paula; Silva, Ana; Barroca, Natália
The present invention relates to a method for preparing composite porous structures, of polymeric matrix and inorganic filler, biocompatible and biodegradable for tissue engineering applications. In particular, the present invention describes the use of inorganic bioactive compounds of different solubility to induce and control the poro...Procedure for the production and use of porcelain stoneware tiles with antibacterial activity
Processes InternationalNational
Seabra, Maria; Batista, João; Grave, Cristina
The present invention describes the production process to obtain porcelain stoneware tiles with antibacterial action. The material promotes the bacteria’s death, while all the other required technological characteristics, particularly the chemical resistance and anti-staining properties, are assured. The product is made from a...Process for coating metallic surfaces with coating compositions containing particles of a layered double hydroxide
Processes InternationalNational
Ferreira, Mário; Zheludkevich, Mikhail; Tedim, João; Gandubert, Valerie; Schmidt-Hansberg, Thomas; Hack, Theo; Nixon, Sonja; Raps, Dominik; Becker, Diana; Schroeder, Sven
The invention relates to a process of coating a metallic surface with a composition for coating with a pretreatment composition prior to organic coating, with a passivation composition without intent for subsequent organic coating, with a pretreatment primer composition, with a primer composition, with a paint composition or with an ele...Process for obtaining thin films of barium and strontium titanate at low temperatures by sol-gel and high tunable dielectric permittivity
Processes National
Vilarinho, Paula; Wu, Aiying; Gao, Jie
The present invention relates to a new process for obtaining thin films of dielectric, piezoelectric and ferroelectric materials at low temperatures, crystalline, dense and with optimized electrical properties, in particular barium and strontium titanate, BST, at low temperatures, 600 °C. Conventional sol gel solutions are mixed...Process for preparing a nanocrystalline material
Processes International
O’Brien, Paul; Trindade, Tito
A process for preparing a nanocrystalline material comprising at least a first ion and at least a second ion different from the first ion, and wherein at least the first ion is a metal ion. The process comprises contacting a metal complex comprising the first ion and the second ion with a dispersing medium suitable to form t...Process for the production of liquid poliols of renewable origin by the liquefaction of agro-forestry and agro-food biomass
Processes InternationalNational
Gandini, Alessandro; Pinto, José; Neto, Carlos
The present invention concerns the process for producing liquid polyols of renewable origin from organic materials such as agro-forestry and agro-food biomass and respective industrial residues, constituting a profitable and bio-friendly alternative to commercial polyols obtained from petrochemical sources. The said process involves two...Process to obtain red clay ceramic by incorporating sludge from effluents treatment generated in metal surface treatment operations, or sands or smelting sand fines, and resulting products
Processes National
Batista, João; Silva, Rui; Castro, Fernando; Figueiredo, José
The present invention relates to the manufacture of red clay ceramic products, containing sludge from treatment of effluents generated in metal surface treatment operations. The optimization of the processing conditions, particularly the mixing of sludge with the clay matrix, had by reference the minimum deviation from the n...Production of extruded ceramic floor tiles fully based on wastes
Processes National
Batista, João; Ribeiro, Manuel; Boia, Cristina
The present invention relates to obtaining a recycled ceramic formulation to produce extruded floor/coating by combining ceramic sludges, glass cullet and aluminum anodizing sludges. Careful separation process of impurities and of treating glass and anodizing wastes, and use of ceramic sludges properly handled and re...Production of thick ceramic composite films via sol gel solutions sedimentation and infiltration
Processes National
Vilarinho, Paula; Wu, Aiying; Kholkin, Andrei
The present invention relates to a method for producing ceramic composite thick films of a thickness above 50 microns on a selected group of substrates at temperatures below 600 degrees Celsius, for piezoelectric applications.Sol-gel solutions are mixed with up to about 90% by weight of powder particles (ceramic or single cr...Reuse of aluminous sludges in the manufacture of mullite-based ceramic bodies
Processes National
Batista, João; Ferreira, José; Ribeiro, Manuel
The present invention relates to the obtainment of refractory ceramic bodies through different conformation processes, from aluminous sludge from waste water treatment plants (WWTP) of surface treatment, anodizing and lacquering aluminum industries.The sludge, as it exits the WWTP, can be used as raw material in the formulat...