ES2471567A1 - Procedure for the generation of nanoparticles of calcium carbonate by wet process from residues of the natural stone transformation industry (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the generation of nanoparticles of calcium carbonate by wet process from residues of the natural stone transformation industry (Machine-translation by Google Translate, not legally binding) Download PDFInfo
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- ES2471567A1 ES2471567A1 ES201231997A ES201231997A ES2471567A1 ES 2471567 A1 ES2471567 A1 ES 2471567A1 ES 201231997 A ES201231997 A ES 201231997A ES 201231997 A ES201231997 A ES 201231997A ES 2471567 A1 ES2471567 A1 ES 2471567A1
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- calcium carbonate
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
- C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F1/00—Methods of preparing compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or the rare earths, in general
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
Procedimiento para la generación de nanopart�culas de carbonato cálcico por vía húmeda a partir de residuos de la industria de transformación de la piedra natural Procedure for the generation of wet calcium calcium carbonate nanoparticles from waste from the natural stone transformation industry
CAMPO TÉCNICO TECHNICAL FIELD
El objeto de la presente invención, tal y como se expresa en el enunciado de esta memoria descriptiva, est� relacionado con un procedimiento para la generación de nanopart�culas de carbonato cálcico por la vía húmeda. El procedimiento es susceptible de ser industrializable y el producto obtenido a través de él, las nanopart�culas de carbonato cálcico, pueden ser utilizadas como materia prima en multitud de sectores distintos, tales como construcción, alimentación, cosm�tica, etc. The object of the present invention, as expressed in the statement of this specification, is related to a process for the generation of calcium carbonate nanoparticles by the wet route. The process is capable of being industrializable and the product obtained through it, the calcium carbonate nanoparticles, can be used as raw material in many different sectors, such as construction, food, cosmetics, etc.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Las propiedades de las partículas en dimensiones de los nano-metros, presentan cada vez más interés en la industria por sus aplicaciones en la consecución de materiales con mayores prestaciones mecánicas y químicas. No obstante, las tecnologías actualmente desarrolladas a escala de laboratorio presentan inconvenientes para su implantación industrial, debido a las cargas superficiales que se generan en dichas partículas durante el proceso de fabricación, que hace que éstas se aglomeren en agregados discretos que es necesario moler posteriormente. En este proceso se pierden algunas de las propiedades de las partículas generadas, haciendo en la mayor parte de los casos inviable técnicamente su obtención. The properties of particles in nano-meter dimensions, are increasingly interested in the industry for their applications in the achievement of materials with greater mechanical and chemical performance. However, the technologies currently developed on a laboratory scale present inconveniences for their industrial implantation, due to the surface charges that are generated in said particles during the manufacturing process, which causes them to agglomerate in discrete aggregates that must be ground later. In this process some of the properties of the generated particles are lost, making obtaining them in most cases technically unfeasible.
DESCRIPCI�N DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
En el proceso que se propone se consigue eliminar la tendencia a la agregación de las nano-partículas recubri�ndolas superficialmente de forma individualizada con un agente apolar en el momento de su generación, por lo que las propiedades de las mismas sufren una menor alteración. In the proposed process it is possible to eliminate the tendency to aggregation of the nano-particles by coating them superficially individually with a nonpolar agent at the time of their generation, so that their properties suffer a minor alteration.
En términos generales, la presente invención se refiere a un procedimiento que permite obtener nano-partículas de carbonato cálcico a partir de residuos de transformación de la piedra natural por vía húmeda mediante la introducción de agentes estabilizadores de carga superficial en las partículas durante el proceso de generación de las mismas. Los residuos de transformación de la piedra natural son disoluciones acuosas que contienen restos de material p�treo y, por tanto, una concentración determinada de carbonato cálcico. Estos residuos, además, proceden de los procesos de aserrado, apomazado, pulido y, en general, de cualquier proceso asociado a la transformación de cualquier piedra natural, principalmente mármoles y calizas, que requiera una refrigeración externa por agua. Alternativamente, puede ser válida para la aplicación del método descrito en la presente patente cualquier disolución acuosa que contenga carbonato cálcico, sin perjuicio de que aparezcan otras sustancias en disolución. In general terms, the present invention relates to a process that allows to obtain nano-particles of calcium carbonate from wet stone transformation residues by introducing surface charge stabilizing agents in the particles during the process of generation of them. The transformation residues of natural stone are aqueous solutions that contain remains of stone material and, therefore, a certain concentration of calcium carbonate. This waste also comes from the processes of sawing, tapping, polishing and, in general, from any process associated with the transformation of any natural stone, mainly marble and limestone, that requires external water cooling. Alternatively, any aqueous solution containing calcium carbonate may be valid for the application of the method described in the present patent, without prejudice to the appearance of other substances in solution.
Inicialmente, la disolución acuosa de carbonato cálcico se trata con una disolución de ácido clorhídrico, gener�ndose en la reacción una disolución acuosa de cloruro de calcio y liber�ndose di�xido de carbono: Initially, the aqueous calcium carbonate solution is treated with a solution of hydrochloric acid, an aqueous solution of calcium chloride being generated in the reaction and carbon dioxide being released:
CaCO3 + 2 HCl = CaCl2 + CO2 + H2O CaCO3 + 2 HCl = CaCl2 + CO2 + H2O
Posteriormente, la disolución de cloruro cálcico previamente preparada se introduce en un reactor tipo tanque agitado junto con estabilizadores de carga, y se hace reaccionar con una corriente gaseosa de di�xido de carbono ajustando pH, caudal de di�xido de carbono, temperatura y nivel de agitaci�n. Los estabilizadores de carga son tensioactivos de tipo ani�nico, cati�nico o neutro hidrosolubles. En este reactor se generan las nanopart�culas de carbonato cálcico, siendo la reacción química la inversa de la que se expuso anteriormente: Subsequently, the previously prepared calcium chloride solution is introduced into a stirred tank reactor along with charge stabilizers, and reacted with a gaseous stream of carbon dioxide by adjusting pH, carbon dioxide flow rate, temperature and agitation level. The charge stabilizers are water-soluble, anionic, cationic or neutral surfactants. In this reactor the nanoparticles of calcium carbonate are generated, the chemical reaction being the inverse of the one described above:
CaCl2 + CO2 + H2O + Estabilizadores de carga = CaCO3 (nanopart�culas)+ 2 HCl CaCl2 + CO2 + H2O + Load stabilizers = CaCO3 (nanoparticles) + 2 HCl
Puede aprovecharse el CO2 generado en la primera reacción como reactivo en esta segunda, siempre y cuando se acondicione adecuadamente. The CO2 generated in the first reaction can be used as a reagent in this second one, as long as it is properly conditioned.
Las nano partículas se recogen de las burbujas generadas por el tensioactivo y son arrastradas por la corriente de CO2 introducida en el reactor. Adicionalmente al CO2 podr� inyectarse una corriente de cualquier otro gas para facilitar el arrastre de las partículas. Posteriormente las partículas se secan con aire caliente en contra corriente y se almacenan en recipientes herméticos con una humedad relativa inferior al 1%. The nano particles are collected from the bubbles generated by the surfactant and are carried away by the CO2 stream introduced into the reactor. In addition to CO2, a stream of any other gas may be injected to facilitate the entrainment of the particles. Subsequently, the particles are dried with hot air against the current and stored in airtight containers with a relative humidity of less than 1%.
Este proceso permite una fácil réplica a escala industrial y la obtención de las nano-partículas deseadas con las propiedades adecuadas sin necesidad de recurrir a la molienda, molturaci�n o disgregaci�n posterior. This process allows easy replication on an industrial scale and obtaining the desired nano-particles with the appropriate properties without the need for subsequent grinding, grinding or disintegration.
Las concentraciones de los agentes tensioactivos necesarias para la generación de nano-partículas es elevada y superior o igual a 50 mM/l. La secuencia de pasos que tiene lugar en este proceso de generación se describe a continuación. En primer lugar se produce una micela compleja por unión del tensioactivo y el coloide base de cloruro de calcio, que actúa como núcleo de condensación para la precipitación de las nanopart�culas. En segundo lugar, el carbónico se adsorbe sobre los núcleos ya formados y, a continuación, el calcio de la disolución reacciona con el carbónico adsorbido. En tercer lugar, las cadenas li�fobas del tensioactivo separan los distintos centros de crecimiento impidiendo la agregación de las partículas formadas por recubrimiento de las mismas y, finalmente, las partículas as� generadas se integran en la superficie de la burbuja que se genera en el interior de la disolución por la inyección de aire o cualquier otro gas, que arrastra a la burbuja hasta la superficie de la disolución y escapa de ella recogi�ndose en una trampa sif�nica. De ahí pueden recogerse y puede realizarse un tratamiento de acondicionamiento de las mismas (secado y almacenamiento), o bien, se puede obtener un slurry de nanopart�culas carbonatadas. The concentrations of the surfactants necessary for the generation of nano-particles is high and greater than or equal to 50 mM / l. The sequence of steps that takes place in this generation process is described below. First, a complex micelle is produced by binding the surfactant and the calcium chloride base colloid, which acts as a condensation nucleus for the precipitation of the nanoparticles. Secondly, the carbonic acid is adsorbed on the nuclei already formed and then the calcium in the solution reacts with the carbonic acid adsorbed. Thirdly, the lymphobic chains of the surfactant separate the different growth centers preventing the aggregation of the particles formed by coating them and, finally, the particles thus generated are integrated into the surface of the bubble that is generated in the interior of the solution by the injection of air or any other gas, which drags the bubble to the surface of the solution and escapes from it by collecting in a siphon trap. From there they can be collected and a conditioning treatment thereof (drying and storage) can be performed, or a carbonated nanoparticle slurry can be obtained.
Las ventajas de este procedimiento descrito son las siguientes: The advantages of this procedure described are the following:
- --
- El proceso permite la generación de nano-partículas sin necesidad de molienda, molturaci�n o disgregaci�n posterior a su creación. The process allows the generation of nano-particles without the need for grinding, grinding or disintegration after its creation.
- --
- El proceso permite la generación de nano-partículas a gran escala, reduciendo as� los costes de producción. The process allows the generation of nano-particles on a large scale, thus reducing production costs.
- --
- El proceso permite la reutilización de un residuo. The process allows the reuse of a waste.
- --
- El proceso es fácilmente controlable dadas las variables implicadas en el mismo. The process is easily controllable given the variables involved in it.
DESCRIPCI�N DE LOS DIBUJOS DESCRIPTION OF THE DRAWINGS
La figura 1 muestra un diagrama de flujo de un ejemplo de caso práctico de aplicación industrial del procedimiento objeto de la presente patente. Figure 1 shows a flow chart of a case study example of industrial application of the process object of the present patent.
El proceso ejemplo consta de las siguientes etapas: The example process consists of the following stages:
- --
- Generación de cloruro cálcico por reacción de una disolución acuosa que contiene carbonato cálcico con ácido clorhídrico (1). Generation of calcium chloride by reaction of an aqueous solution containing calcium carbonate with hydrochloric acid (1).
- --
- Deshidrataci�n y neutralización del gas carbónico resultante por adsorción en columna (2). Dehydration and neutralization of the resulting carbonic gas by column adsorption (2).
-Almacenamiento del carbónico a presión (3). -Storage of carbon dioxide under pressure (3).
- Neutralización de la disolución de cloruro cálcico por absorción en columna (4). - Neutralization of the calcium chloride solution by column absorption (4).
- --
- Generación de nano-partículas por reacción entre el carbónico y la disolución en tanque agitado (5). Generation of nano-particles by reaction between the carbonic and the stirred tank solution (5).
5 Los agentes de superficie a usar se seleccionan en función de las aplicaciones posteriores que se les vaya a dar a las partículas obtenidas. En función de estos agentes de superficie se seleccionan las condiciones operativas de producción. 5 The surface agents to be used are selected according to the subsequent applications that will be given to the particles obtained. Depending on these surface agents, the operating conditions of production are selected.
Las partículas extraídas del tanque (5), mediante las burbujas que el tensioactivo y el gas introducido generan dentro de él se recogen por la parte superior y se envían a 10 un secadero de aire caliente a 130 �C operado en contracorriente y de ahí se llevan a The particles extracted from the tank (5), by means of the bubbles that the surfactant and the gas introduced generate within it, are collected from the top and a hot air dryer at 130 �C operated in countercurrent is sent to it and from there lead to
almacenamiento hermético en condiciones de humedad inferior al 1%. airtight storage under humidity conditions of less than 1%.
Claims (3)
- --
- Reacci�n química entre la suspensión de cloruro de calcio as� obtenida con di�xido de carbono, en presencia de un agente estabilizador de carga 10 (tensioactivo hidrosoluble de naturaleza cati�nica, ani�nica o neutra) y con Chemical reaction between the calcium chloride suspension thus obtained with carbon dioxide, in the presence of a charge stabilizing agent 10 (water-soluble surfactant of a catholic, anionic or neutral nature) and with
- Categor�a Category
- 56 Documentos citados Reivindicaciones afectadas 56 Documents cited Claims Affected
- Y Y
- TW 200823156 A (CHIN MIN INST OF TECHNOLOGY) 01.06.2008, resumen [en línea] recuperado de EPODOC/EPO y WPI/DERWENT. 1-3 TW 200823156 A (CHIN MIN INST OF TECHNOLOGY) 01.06.2008, summary [online] retrieved from EPODOC / EPO and WPI / DERWENT. 1-3
- Y Y
- CN 1098382 A (LIN FENG) 08.02.1995, resumen [en línea] recuperado de EPODOC/EPO y WPI/DERWENT. 1-3 CN 1098382 A (LIN FENG) 08.02.1995, summary [online] retrieved from EPODOC / EPO and WPI / DERWENT. 1-3
- Y Y
- CN 102115120 A (YANRONG MA) 06.07.2011, resumen [en línea] recuperado de EPODOC/EPO y WPI/DERWENT. 1-3 CN 102115120 A (YANRONG MA) 06.07.2011, summary [online] retrieved from EPODOC / EPO and WPI / DERWENT. 1-3
- Y Y
- DE 19603449 A1 (PAPIERTECHNISCHE STIFTUNG) 07.08.1997, resumen [en línea] recuperado de EPODOC/EPO y WPI/DERWENT. 1-3 DE 19603449 A1 (PAPIERTECHNISCHE STIFTUNG) 07.08.1997, summary [online] retrieved from EPODOC / EPO and WPI / DERWENT. 1-3
- Y Y
- WO 2009096795 A1 (ELKEM SOLAR AS et al.) 06.08.2009, página 3, líneas 3-5,22-25; reivindicaciones 2,6. 1-3 WO 2009096795 A1 (ELKEM SOLAR AS et al.) 06.08.2009, page 3, lines 3-5,22-25; claims 2.6. 1-3
- Y Y
- HAN Y S et al. Effect of Surfactants on the Formation of Hollow CaCO3 Particle by Bubble Template Method. Ceramic transactions: Proceedings of the 2nd Int. Conf. Characterization and control of interfaces for high quality advanced materials II. 28.06.2011. Vol.198, páginas 263-268. 1. Introduction, 2. Experimental section, 4. Conclusions. 1-3 HAN Y S et al. Effect of Surfactants on the Formation of Hollow CaCO3 Particle by Bubble Template Method. Ceramic transactions: Proceedings of the 2nd Int. Conf. Characterization and control of interfaces for high quality advanced materials II. 06-28-2011. Vol. 198, pages 263-268. 1. Introduction, 2. Experimental section, 4. Conclusions. 1-3
- Y Y
- HADIKO G et al. Synthesis of hollow calcium carbonate particles by the bubble templating method. Materials letters, 01.08.2005, Vol: 59, N�: 19-20, páginas: 2519-2522. 1. Introduction, 3. Results and discussion. 1-3 HADIKO G et al. Synthesis of hollow calcium carbonate particles by the bubble templating method. Materials letters, 01.08.2005, Vol: 59, N�: 19-20, pages: 2519-2522. 1. Introduction, 3. Results and discussion. 1-3
- A TO
- KR 20120049990 A (KOREA INST GEOSCIENCE & MINERA) 18.05.2012, resumen [en línea] recuperado de EPODOC/EPO y WPI/DERWENT. 1-3 KR 20120049990 A (KOREA INST GEOSCIENCE & MINERA) 18.05.2012, summary [online] retrieved from EPODOC / EPO and WPI / DERWENT. 1-3
- A TO
- HAN Y S et al. Effect of flow rate and CO2 content on the phase and morphology of CaCO3 prepared by bubbling method. Journal of crystal growth. 01.04.2005, Vol. 276, N� 3-4, páginas: 541-548. Resumen, 1. Introduction, 4. Conclusions. 1-3 HAN Y S et al. Effect of flow rate and CO2 content on the phase and morphology of CaCO3 prepared by bubbling method. Journal of crystal growth. 01.04.2005, Vol. 276, N� 3-4, pages: 541-548. Summary, 1. Introduction, 4. Conclusions. 1-3
- A TO
- WO 2012095815 A1 (CSIR et al.) 19.07.2012, resumen, línea 16 – página 4, línea 8. 1-3 WO 2012095815 A1 (CSIR et al.) 19.07.2012, summary, line 16 - page 4, line 8. 1-3
- Categor�a de los documentos citados X: de particular relevancia Y: de particular relevancia combinado con otro/s de la misma categoría A: refleja el estado de la técnica O: referido a divulgación no escrita P: publicado entre la fecha de prioridad y la de presentación de la solicitud E: documento anterior, pero publicado después de la fecha de presentación de la solicitud Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the submission of the application E: previous document, but published after the date of submission of the application
- El presente informe ha sido realizado • para todas las reivindicaciones • para las reivindicaciones n�: This report has been prepared • for all claims • for claims no:
- Fecha de realización del informe 28.03.2014 Date of realization of the report 28.03.2014
- Examinador M. González Rodríguez Página 1/4 Examiner M. González Rodríguez Page 1/4
- Novedad (Art. 6.1 LP 11/1986) Novelty (Art. 6.1 LP 11/1986)
- Reivindicaciones Reivindicaciones 1-3 SI NO Claims Claims 1-3 IF NOT
- Actividad inventiva (Art. 8.1 LP11/1986) Inventive activity (Art. 8.1 LP11 / 1986)
- Reivindicaciones Reivindicaciones 1-3 SI NO Claims Claims 1-3 IF NOT
- Documento Document
- Número Publicación o Identificación Fecha Publicación Publication or Identification Number publication date
- D01 D01
- TW 200823156 A (CHIN MIN INST OF TECHNOLOGY) 01.06.2008 TW 200823156 A (CHIN MIN INST OF TECHNOLOGY) 01.06.2008
- D02 D02
- CN 1098382 A (LIN FENG) 08.02.1995 CN 1098382 A (LIN FENG) 08.02.1995
- D03 D03
- CN 102115120 A (YANRONG MA) 06.07.2011 CN 102115120 A (YANRONG MA) 06.07.2011
- D04 D04
- DE 19603449 A1 (PAPIERTECHNISCHE STIFTUNG) 07.08.1997 FROM 19603449 A1 (PAPIERTECHNISCHE STIFTUNG) 07.08.1997
- D05 D05
- WO 2009096795 A1 (ELKEM SOLAR AS et al.) 06.08.2009 WO 2009096795 A1 (ELKEM SOLAR AS et al.) 06.08.2009
- D06 D06
- HAN Y S et al. Effect of Surfactants on the Formation of Hollow CaCO3 Particle by Bubble Template Method. 28.06.2011 HAN Y S et al. Effect of Surfactants on the Formation of Hollow CaCO3 Particle by Bubble Template Method. 06.28.2011
- D07 D07
- HADIKO G et al. Synthesis of hollow calcium carbonate particles by the bubble templating method. 01.08.2005 HADIKO G et al. Synthesis of hollow calcium carbonate particles by the bubble templating method. 01.08.2005
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ES201231997A ES2471567B1 (en) | 2012-12-21 | 2012-12-21 | Procedure for the generation of nanoparticles of calcium carbonate by wet route from waste from the natural stone transformation industry |
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ES201231997A ES2471567B1 (en) | 2012-12-21 | 2012-12-21 | Procedure for the generation of nanoparticles of calcium carbonate by wet route from waste from the natural stone transformation industry |
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CN1098382A (en) * | 1993-07-31 | 1995-02-08 | 林峰 | The method of preparation of hydrocarbon calcium carbonate by acid decomposition reclaiming circulation |
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TW200823156A (en) * | 2006-11-17 | 2008-06-01 | Chin Min Inst Of Technology | A method for manufacturing high purity calcium carbonate powder from marble sludge |
WO2009096795A1 (en) * | 2008-01-30 | 2009-08-06 | Elkem Solar As | Method for production of calcium compounds. |
CN102115120A (en) * | 2010-12-31 | 2011-07-06 | 马艳荣 | Method for producing calcium carbonate by using carbide slag |
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2012
- 2012-12-21 ES ES201231997A patent/ES2471567B1/en not_active Expired - Fee Related
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TW200823156A (en) * | 2006-11-17 | 2008-06-01 | Chin Min Inst Of Technology | A method for manufacturing high purity calcium carbonate powder from marble sludge |
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Non-Patent Citations (3)
Title |
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HADIKO G et al. Synthesis of hollow calcium carbonate particles by the bubble templating method. Materials letters, 01/08/2005, Vol: 59, Nº: 19-20, páginas: 2519-2522. 1. Introduction, 3. Results and discussion. * |
HAN Y S et al. Effect of flow rate and CO2 content on the phase and morphology of CaCO3 prepared by bubbling method. Journal of crystal growth. 01/04/2005, Vol. 276, Nº 3-4, páginas: 541 - 548. Resumen, 1. Introduction, 4. Conclusions. * |
HAN Y S et al. Effect of Surfactants on the Formation of Hollow CaCO3 Particle by Bubble Template Method. Ceramic transactions: Proceedings of the 2nd Int. Conf. Characterization and control of interfaces for high quality advanced materials II. 28/06/2011. Vol.198, páginas 263-268. 1. Introduction, 2. Experimental section, 4. Conclusions. * |
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