Boletin de la Sociedad Espanola de Ceramica y Vidrio最新文献

{"title":"Microstructure modulation of a Bi4Ti3O12 thin film system by combining the effect of a simple processing methodology with a co-doping strategy involving Nd3+ and Nb5+","authors":"Carlos Gumiel ,&nbsp;María Colado ,&nbsp;David G. Calatayud ,&nbsp;Rafael Barea ,&nbsp;Marina Villegas ,&nbsp;Teresa Jardiel","doi":"10.1016/j.bsecv.2024.09.002","DOIUrl":"10.1016/j.bsecv.2024.09.002","url":null,"abstract":"<div><div>A microstructure based on plate-like grains is expected in the obtaining of Bi₄Ti₃O₁₂ ferroelectric ceramics, promoted by the Aurivillius crystalline structure that this material exhibit. This grain morphology would lead to conductivity making the functional response unpractical. In this frame, we address the control of the crystal growth which leads to this grain morphology by combining the effect of a simple thin film obtaining procedure with doping strategies. On the one hand, an aqueous solution-gel plus spin-coating methodology is performed here for the obtaining of these thin films. On the other hand, a simultaneous incorporation of Nd³⁺ and Nb⁵⁺ in the crystal lattice replacing Bi³⁺ and Ti⁴⁺, respectively, is conducted in this contribution. The results obtained by X-ray diffraction, UV–visible measurements and FESEM confirm that the incorporated dopants are able to block (or at least control) the mentioned crystal growth.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 6","pages":"Pages 425-433"},"PeriodicalIF":2.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In vitro evaluation of a new endodontic cement based on calcium and strontium aluminate","authors":"Willams Teles Barbosa ,&nbsp;Imarally Vitor de Souza Ribeiro Nascimento ,&nbsp;Daniel Bezerra Lima ,&nbsp;Francivandi Coelho Barbosa ,&nbsp;Benjamin S. Lazarus ,&nbsp;Josiane Dantas Viana Barbosa ,&nbsp;Marcus Vinicius Lia Fook ,&nbsp;Raúl Garcia Carrodeguas ,&nbsp;Miguel Ángel Rodriguez","doi":"10.1016/j.bsecv.2024.06.004","DOIUrl":"10.1016/j.bsecv.2024.06.004","url":null,"abstract":"<div><div>Aluminate-based endodontic cements are promising in root canal treatments. Calcium aluminates have been used as bone and dental fillers, due to their fast setting time, good workability, and biocompatibility, overcoming some of the disadvantages of mineral trioxide aggregate (MTA) currently available. Similarly, strontium aluminates are of interest, due to their potential as hydraulic cement. They have greater radiopacity than their calcium counterparts and the potential to promote osteoblast differentiation which favors bone regeneration. The present study evaluates the <em>in vitro</em> biological properties of the new endodontic cement CS5C (80/20<!--> <!-->wt.% of S₃A (tri-strontium aluminate (Sr₃Al₂O₆)) and C₁₂A₇ (dodeca-calcium hepta-aluminate (Ca₁₂Al₁₄O₃₃))). The <em>in vitro</em> ion release tests showed that Al³⁺, Ca²⁺, and Sr²⁺ ions are responsible for the alkaline pH of the medium, promoting antimicrobial activity against all bacterial strains tested. It also showed biocompatible properties, with promising cellular adhesion and proliferation <em>in vitro</em>. The results revealed that CS5S cement has strong potential for future applications as endodontic cement.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 6","pages":"Pages 390-397"},"PeriodicalIF":2.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141689960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the diversity of clays: Impacts of temperature on physicochemical changes, mechanical characteristics, and permeability, and their relevance to membrane applications","authors":"Khadija Elataoui ,&nbsp;Mohamed Amine Harech ,&nbsp;Hajar Qobay ,&nbsp;Noureddine Elbinna ,&nbsp;Hakima Aouad ,&nbsp;Mohamed Waqif ,&nbsp;Latifa Saadi","doi":"10.1016/j.bsecv.2024.07.001","DOIUrl":"10.1016/j.bsecv.2024.07.001","url":null,"abstract":"<div><div>This study investigates the characterization of two clays obtained from the Safi and Fez regions, focusing on their analysis for filtration membrane applications. Various analytical techniques were employed, including chemical composition analysis, elemental analysis, mineralogical characterization, carbonate content determination, color assessment, plasticity evaluation, thermal treatment analysis (DTA-TG), mineralogical transformation study, fusion tests, membrane tests, and scanning electron microscopy (SEM).</div><div>The results reveal significant differences between the two clays regarding their chemical composition. The red clay exhibits a mineralogical composition comprising quartz, calcite, dolomite, hematite, illite, and kaolinite, whereas the gray clay contains quartz, calcite, dolomite, illite, talc, and montmorillonite. Furthermore, upon thermal treatment, both clays exhibit changes in their physical properties.</div><div>Despite the decrease in porosity and water absorption, as well as the increase in compression strength for both clays, the permeability of the grey clay increases, unlike the red clay, which exhibits a constant permeability beyond 1000<!--> <!-->°C.</div><div>These findings highlight the diversity and industrial significance of clays from the Safi and Fez regions for filtration membrane applications. The contrasting properties of red and gray clays provide insights into their potential utilization in different industries. Exploring these clays’ behavior can lead to better filtration membranes and new industrial applications.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 6","pages":"Pages 398-412"},"PeriodicalIF":2.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the interaction between low density polyethylene and TiO2 in different environments. Influence of the presence and absence of radiation, and of the atmosphere (O2, N2 or Ar)","authors":"Ana Castellanos-Aliaga ,&nbsp;Laura San-Miguel ,&nbsp;Marina Villegas ,&nbsp;Ángel Caballero ,&nbsp;Marco Peiteado ,&nbsp;David González Calatayud","doi":"10.1016/j.bsecv.2024.09.005","DOIUrl":"10.1016/j.bsecv.2024.09.005","url":null,"abstract":"<div><div>In the process of photocatalytic degradation of plastics, the surface interaction between the plastic material and the photocatalyst results crucial. The present work focuses on using a specific TiO₂ photocatalytic semiconductor whose hierarchical structure favours the interaction with low density polyethylene (LDPE), a key component in plastics. An exhaustive study of the nature of this interaction is conducted, analysing the influence of the atmosphere and radiation. The results obtained indicate that the observed interaction can be modulated by controlling the atmosphere, evolving into a degradation process whose mechanism also depends on the absence or the presence of light. This point is particularly relevant as it highlights the dual nature of TiO₂ as both photocatalyst and catalyst.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 6","pages":"Pages 434-445"},"PeriodicalIF":2.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-temperature sintering of ceramic bricks from clay, waste glass and sand","authors":"Mario Flores Nicolás ,&nbsp;Marcos M. Chávez ,&nbsp;Marina Vlasova ,&nbsp;Teresa Pi Puig","doi":"10.1016/j.bsecv.2024.06.003","DOIUrl":"10.1016/j.bsecv.2024.06.003","url":null,"abstract":"<div><div>In the present work, bricks were made on a real 1:1 scale for the construction of housing. For the preparation of the mixtures, raw materials such as clay, sand and glass obtained from the recycling of brown beer containers were used, applying the method plastic molding for the preparation of the semi-products. It has been established that the addition of sand containing a small amount of montmorillonite to such clay enabled to realization of plastic molding. The incorporation of glass into the clay provided to substantially reduce the sintering time of the bricks up to 8<!--> <!-->h and to vary their strength properties. Sintering was carried out at 800<!--> <!-->°C in an air atmosphere. The results of X-ray diffraction (XRD), X-ray fluorescence (XRF) and field emission scanning electron microscopy (FESEM) and EDS microanalysis have shown that the raw materials and ceramic bricks contains quartz and feldspars. Low-temperature sintering has made it possible to obtain high-quality, high-strength building bricks in accordance with standards.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 5","pages":"Pages 377-388"},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the use of Afyon clay in Ukrainian clay-free compositions for porcelain tile manufacture","authors":"","doi":"10.1016/j.bsecv.2024.05.002","DOIUrl":"10.1016/j.bsecv.2024.05.002","url":null,"abstract":"<div><div>The conflict in Ukraine has meant that the supply of ball clay from this country has been cut off, giving rise to a serious setback for the manufacture of porcelain tile, as this raw material was a basic component for the formulation of this type of ceramic tile. This work proposes the use of a clay from the Afyon area in Turkey as an alternative, which is formed by a complex mixture of clay and non-clay minerals.</div><div>In the first part of the study, a complete characterisation of the clay has been carried out, comparing it with a standard Ukrainian clay. In a second part, a composition in which Afyon clay is the main clay component has been formulated and characterised in comparison with a standard composition formulated with Ukrainian clays. Overall, the results show that, although some properties for Afyon clay differ from those for Ukrainian clays, the behaviour of the proposed composition in the different stages of the process, milling/deflocculation, pressing and firing, is similar to that of the standard composition, thus adapting it to the requirements of industrial practice. This provides a feasible alternative way of replacing Ukrainian ball clays.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 5","pages":"Pages 356-367"},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141391976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of the dynamic properties of an automotive laminated glass ceiling","authors":"Jon García-Barruetabeña,&nbsp;David Miñón,&nbsp;Beatriz Achiaga,&nbsp;Fernando Cortés","doi":"10.1016/j.bsecv.2024.05.001","DOIUrl":"10.1016/j.bsecv.2024.05.001","url":null,"abstract":"<div><div>This article presents a methodology for the characterization of the dynamic properties of a laminated glass automotive ceiling, motivated by the inherent difficulty in obtaining laboratory samples from this kind of components. This methodology is based on the identification of the effective complex modulus of the laminated glass ceiling through Experimental Modal Analysis in conjunction with a finite element model. Besides, a material behaviour model is proposed for the effective complex module. Then, the dynamic properties of the laminated glass core are extracted from the latter using a reverse homogenized formulation of sandwich plates specifically developed in this work. As a result, a methodology to accurately predict the dynamic behaviour of these key automotive components has been achieved. An additional advantage of this methodology is that the identification of properties is carried out from a manufactured component and not from samples of reduced geometries, considering the impact of the manufacturing process.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 5","pages":"Pages 346-355"},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Basic microstructural, mechanical, electrical and optical characterisation of BaTiAl6O12 ceramics","authors":"Daniel Drdlik ,&nbsp;Vojtech Marak ,&nbsp;Robert Klement ,&nbsp;Pavel Tofel ,&nbsp;Katarina Drdlikova ,&nbsp;Hynek Hadraba ,&nbsp;Zdenek Chlup","doi":"10.1016/j.bsecv.2024.06.002","DOIUrl":"10.1016/j.bsecv.2024.06.002","url":null,"abstract":"<div><div>In progressive particle or layered composites based on a combination of BaTiO₃ and Al₂O₃, serving as e.g. ceramic harvesters, new phases are formed during heat treatment. The dominant one is BaTiAl₆O₁₂. This study provides information about the microstructural, mechanical and optical properties of the BaTiAl₆O₁₂ ceramics. The evolution of the phases during the solid-state reaction synthesis of the BaTiAl₆O₁₂ was monitored. The fully dense samples prepared by spark plasma sintering had indentation Vickers hardness and indentation elastic modulus within ranges of 10.1–13.7<!--> <!-->GPa and 132.0–187.0<!--> <!-->GPa, depending on loading force. The three-point bending tests of the BaTiAl₆O₁₂ samples resulted in flexural strength of 129.9<!--> <!-->MPa and fracture toughness of 1.8<!--> <!-->MPa<!--> <!-->m^1/2. The sample showed blue broad-band emission under UV excitation due to the charge-transfer transition of the Ti⁴⁺ and defect sites. The BaTiAl₆O₁₂ evinced low permittivity (<em>ɛ</em>′)<!--> <!-->=<!--> <!-->16 and dielectric loss (<em>tan</em> <em>δ</em>) &lt;0.0003 at a frequency 1<!--> <!-->kHz.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 5","pages":"Pages 368-376"},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spectroscopic insight into the structural and microstructural properties of La2Ce2O7 ceramics","authors":"María Luisa Sanjuán ,&nbsp;Rosa Isabel Merino ,&nbsp;Annu Kumar Lakshya ,&nbsp;Anirban Chowdhury","doi":"10.1016/j.bsecv.2024.07.002","DOIUrl":"10.1016/j.bsecv.2024.07.002","url":null,"abstract":"<div><div>Ceria-based compounds with trivalent dopant ions are currently being investigated as electrolytes for solid oxide fuel cells operating at low to intermediate temperatures. In these materials, the dependence of the ionic conductivity on the dopant content, the relative cation size and the dopant/vacancy or vacancy/vacancy interactions are the subject of intense research, but there is scarce information about a possible correlation between these properties and microstructural ones, such as texture. Here, we address this question in the heavily doped fluorite-like La₂Ce₂O₇ oxide, using a combination of X-ray diffraction, electron microscopy, optical absorption, Raman scattering and impedance spectroscopy. In all cases, materials with varying degree of 〈1<!--> <!-->1<!--> <!-->1〉 texture are compared with untextured samples. In this context, the most relevant Raman signatures are the fluorite-like mode at ∼448<!--> <!-->cm⁻¹ and a vacancy-related band at ∼578<!--> <!-->cm⁻¹. Although remarkable changes were observed upon varying the sintering temperature or the excitation wavelength, both textured and untextured materials displayed similar evolution. A selective enhancement of the vacancy-related band was observed upon decreasing the excitation wavelength from 647 to 488<!--> <!-->nm, which is attributed to a resonance phenomenon involving vacancy-related electronic transitions. An indication of incipient vacancy ordering was given by the observation of an intense band at ∼346<!--> <!-->cm⁻¹, denoting C-R₂O₃-like short-range order; its enhancement with the annealing temperature is attributed to the growth of the C-like regions. Conductivity was measured in textured and untextured, fully dense pellets, in the former along and across the texture direction. Impedance plots suggest that the conductivity is dominated by oxide ions and do not allow to separate a grain boundary contribution in these materials with grain size around 1–2<!--> <!-->μm. The conductivity amounts to around 10⁻⁵ <!-->S/cm at 650<!--> <!-->K, with activation energy of 1.08–1.16<!--> <!-->eV in the temperature range from around 470 to 870<!--> <!-->K. Results were similar in textured and untextured materials. We conclude that there is no significant correlation between texture and vacancy concentration or vacancy ordering. A similar conclusion – no influence of texture – is reached concerning the electrical properties.</div></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 5","pages":"Pages 318-329"},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inteligencia artificial y materiales","authors":"Amador C. Caballero","doi":"10.1016/j.bsecv.2024.10.003","DOIUrl":"10.1016/j.bsecv.2024.10.003","url":null,"abstract":"","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 5","pages":"Page 317"},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}