Boletin de la Sociedad Espanola de Ceramica y Vidrio最新文献_第5页

Glass with a low-melting temperature belonging to the P2O5–CaO–Na2O system, applied as a coating on technical ceramics (alumina, zirconia) and traditional ceramics (porcelain stoneware) 属于P2O5–CaO–Na2O系统的低熔融温度玻璃，用作工业陶瓷（氧化铝、氧化锆）和传统陶瓷（陶瓷石）的涂层

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-03-01 DOI: 10.1016/j.bsecv.2023.07.003

Luis Antonio Díaz , Marta Suárez , Jose Florindo Bartolomé , Sonia Lopez-Esteban , Belén Cabal , Arnaldo Moreno , María del Carmen Bordes , Adolfo Fernández , Carlos Pecharromán , José Serafin Moya

{"title":"Glass with a low-melting temperature belonging to the P2O5–CaO–Na2O system, applied as a coating on technical ceramics (alumina, zirconia) and traditional ceramics (porcelain stoneware)","authors":"Luis Antonio Díaz , Marta Suárez , Jose Florindo Bartolomé , Sonia Lopez-Esteban , Belén Cabal , Arnaldo Moreno , María del Carmen Bordes , Adolfo Fernández , Carlos Pecharromán , José Serafin Moya","doi":"10.1016/j.bsecv.2023.07.003","DOIUrl":"10.1016/j.bsecv.2023.07.003","url":null,"abstract":"<div>This article investigates the development and potential applications of low-melting point lead-free glasses. Their importance is due to strong market demands to comply with the strict international regulations against the use of lead. In this work, a preliminary study of the existing interactions of a low-melting-temperature glass belonging to the P2O5–CaO–Na2O system when it is deposited on different ceramic substrates, both traditional (porcelain stoneware) and technical (alumina and zirconia), has been carried out. The ionic diffusion through the studied interfaces, the phases present, the composition of the glassy phase and the surface morphology of the coating have been studied by Field Emission Scanning Electron Microscopy (FESEM), with coupled EDX microanalysis. The chemical resistance of the different glassy coatings obtained is also evaluated. The results showed that these new lead-free low-melting-temperature glassy coatings are chemically and mechanically compatible, and promising candidates for applications and markets in a broad range of fields.</div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 2","pages":"Pages 104-114"},"PeriodicalIF":3.4,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000377/pdfft?md5=dbcca89f51870077ded61ad630336f23&pid=1-s2.0-S0366317523000377-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48194738","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}

引用次数: 0

The role of tin and iron in the production of Spanish copper red glass from the 19th to the 20th century 锡和铁在 19 至 20 世纪西班牙红铜玻璃生产中的作用

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-03-01 DOI: 10.1016/j.bsecv.2023.07.005

Mingyue Yuan , Jordi Bonet , Hiram Castillo-Michel , Marine Cotte , Nadine Schibille , Bernard Gratuze , Trinitat Pradell

{"title":"The role of tin and iron in the production of Spanish copper red glass from the 19th to the 20th century","authors":"Mingyue Yuan , Jordi Bonet , Hiram Castillo-Michel , Marine Cotte , Nadine Schibille , Bernard Gratuze , Trinitat Pradell","doi":"10.1016/j.bsecv.2023.07.005","DOIUrl":"10.1016/j.bsecv.2023.07.005","url":null,"abstract":"<div>Little is known about the materials used in the manufacture of red window glass in the 19th and the first decade of the 20th century. Here, we have studied fragments from eight Spanish glasses from the 19th and 20th centuries. The red glasses consist of a single layer of red glass on a colourless glass substrate. The chemical composition, oxidation state, nature of colourants and crystalline precipitates were determined by a selection of microanalytical techniques. In the study, we have found that the red colour of the glass is due to the presence of Cu0 nanoparticles, the red glass layer has lower calcium content than the substrate glasses, which we found favours copper being present in the glass predominantly in Cu+. They also contain tin and iron while lead, described in historical and modern documentation, was absent. Tin must have been added to the glass as a Sn2+ compound and acted as a reducing agent for copper. Iron is also a well-known reducing agent, but does not act as such in the red glasses studied here. However, it may have facilitated the reduction of copper to Cu0 by promoting its incorporation into the glass as Cu+ rather than Cu2+.</div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 2","pages":"Pages 125-134"},"PeriodicalIF":3.4,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000389/pdfft?md5=b31007c3180ace17a4c85f805cdb6151&pid=1-s2.0-S0366317523000389-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136161961","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}

引用次数: 0

Investigation of the use of nano-titanium dioxide particles synthesized by reflux method as a whitener agent in standard porcelain tiles 回流法合成的纳米二氧化钛颗粒在标准瓷砖中用作增白剂的研究

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.05.001

Neslihan Tamsu Selli , Neslihan Basaran , Ömer Kesmez

{"title":"Investigation of the use of nano-titanium dioxide particles synthesized by reflux method as a whitener agent in standard porcelain tiles","authors":"Neslihan Tamsu Selli , Neslihan Basaran , Ömer Kesmez","doi":"10.1016/j.bsecv.2023.05.001","DOIUrl":"10.1016/j.bsecv.2023.05.001","url":null,"abstract":"<div>The effects of adding zircon and synthesized TiO2 nanoparticles (NPs) to standard porcelain tiles on mechanical and optical properties were studied. The obtained TiO2 nanoparticles had an average particle size of 7.47nm. The optical properties of TiO2 NPs were characterized by using UV–visible spectrophotometer. The synthesized TiO2 NPs and commercial zircon were added to standard porcelain tile composition at a rate of 1%, 2% and 4% by weight. Phase analyzes of the samples were made with XRD, and microstructure analyzes were made with SEM/EDS. Optical dilatometer test was used for sintering studies and densification behaviour was observed with water absorption test. The optical behaviour of the samples was analyzed using spectrophotometric measurements (CIELab method). As a result of this test, it was observed that nano-sized titanium oxide can be used as a whitening agent in porcelain tiles. In addition, the additives made to porcelain tiles also contributed to the increase in mechanical properties.</div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 1","pages":"Pages 47-58"},"PeriodicalIF":3.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000250/pdfft?md5=428e7249cf83254e44fa926d434eee5d&pid=1-s2.0-S0366317523000250-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48561855","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}

引用次数: 0

Evaluation of the photocatalytic activity of ZnO nanorods and nanoflowers grown from seed layers deposited by spin coating 由旋涂沉积的种子层生长的ZnO纳米棒和纳米花的光催化活性评估

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.06.003

Antonia del Rocío López Guemez , Adrián Cordero García , José Luis Cervantes López , Hermicenda Pérez Vidal , Laura Lorena Díaz Flores

{"title":"Evaluation of the photocatalytic activity of ZnO nanorods and nanoflowers grown from seed layers deposited by spin coating","authors":"Antonia del Rocío López Guemez , Adrián Cordero García , José Luis Cervantes López , Hermicenda Pérez Vidal , Laura Lorena Díaz Flores","doi":"10.1016/j.bsecv.2023.06.003","DOIUrl":"10.1016/j.bsecv.2023.06.003","url":null,"abstract":"<div>The increase in pollution, using photocatalytic materials to degrade organic pollutants remains in force. ZnO is the most used semiconductors for photocatalytic applications. The oriented growth of nanostructures on substrates or seed layers (SL) improves the physical and chemical properties compared to the bulk-grown material. In this work, the photocatalytic efficiency of ZnO nanorods and nanoflowers was evaluated, obtained by hydrothermal growth (HG) over SL deposited by the spin-coating technique (SCT). The characterizations results showed two types of growth: 1D nanostructures with a dimension in the range of 400–1000nm and diameters of 70–100nm, and 1D microstructures with approximate 5–11μm length and diameters of 1–2μm. However, in the 7 SL system, micro prisms were generated, which led to the formation of 3D nanostructures (micro flowers) of ZnO with a maximum of 6μm in diameter. The system with 1D and 3D ZnO nanostructures, grown in 7 SL, was the most efficient methylene blue degradation. Achieving 100% transformation in 120min, with a rate constant of 2.98×10−2 <!-->min−1. The results show that the SCT deposit combined with the sol–gel method and HG produces 1D and 3D structures with high potential in photocatalytic degradation.</div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 1","pages":"Pages 72-84"},"PeriodicalIF":3.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000304/pdfft?md5=ad0f7e173e5d239b2aa42519eaacdbac&pid=1-s2.0-S0366317523000304-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48055139","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}

引用次数: 0

LIX Congreso Nacional de la Sociedad Española de Cerámica y Vidrio 西班牙陶瓷和玻璃协会 LIX 全国大会

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2024.02.001

Amador C. Caballero

引用次数: 0

Influencia del polvo de vidrio en el comportamiento ambiental, térmico y mecánico del hormigón que contiene ceniza de cascarilla de arroz 玻璃粉对含稻壳灰混凝土的环境、热和力学性能的影响

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.06.004

Óscar Felipe Arbeláez Pérez , Vanessa Senior-Arrieta , Andrés Felipe Rúa Suárez , Jeferson Carvajal Jaramillo , Cristian Arley Lasso Cerón

{"title":"Influencia del polvo de vidrio en el comportamiento ambiental, térmico y mecánico del hormigón que contiene ceniza de cascarilla de arroz","authors":"Óscar Felipe Arbeláez Pérez , Vanessa Senior-Arrieta , Andrés Felipe Rúa Suárez , Jeferson Carvajal Jaramillo , Cristian Arley Lasso Cerón","doi":"10.1016/j.bsecv.2023.06.004","DOIUrl":"10.1016/j.bsecv.2023.06.004","url":null,"abstract":"<div>A large amount of waste glass (WG) and rice husk ash (CCA) is produced yearly. This paper evaluated the effect of incorporating waste glass in concrete prepared with rice husk ash (RHA) as a partial substitute for cement, considering differences in the mechanical and thermal behavior of concrete based on the proportions of WG and CCA. A 5% replacement of cement by ashes of rice husk and waste glass was considered in this work. Concrete samples were prepared with several RHA:WG ratios namely 1:0, 1:1, 1:2, and 1:3 (RHA +WG =5%). For these concrete samples, the mechanical, thermal, and environmental properties were evaluated, the latter measured in CO2 emissions. Results showed that workability (i.e. slump) and density increased as long as WG content increased. The value of compressive strength of 1:3 mixture was 14% higher than the 1:0 concrete mixture. Moreover, the thermal conductivity was increased by 380% and CO2 emissions were dropped by 5.5%, in comparison to 1:0 concrete mixture. The incorporation of WG improves mechanical and thermal properties and reduces the environmental impact of rice husk ash concrete.</div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 1","pages":"Pages 85-95"},"PeriodicalIF":3.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000316/pdfft?md5=3fd9160d38a058920589e8da733921af&pid=1-s2.0-S0366317523000316-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135363822","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}

引用次数: 0

Investigating correlations between translucency and wear resistance in lithium silicate-based dental glass-ceramics 硅酸锂基牙科材料透光性与耐磨性的相关性研究

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.02.004

Fernando Rodríguez-Rojas, Óscar Borrero-López, Estíbaliz Sánchez-González, José D. Ríos, Fernando Guiberteau

引用次数: 0

Glass–crystalline materials with high iron oxide concentration: Phase composition, redox ratio and magnetic properties 高浓度氧化铁的玻璃晶体材料：相组成、氧化还原比率和磁性能

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.04.001

Ruzha Harizanova , Irena Mihailova , Zara Cherkezova-Zheleva , Daniela Paneva , Milena Georgieva , Dimitar Tzankov , Georgi Avdeev , Christian Rüssel

{"title":"Glass–crystalline materials with high iron oxide concentration: Phase composition, redox ratio and magnetic properties","authors":"Ruzha Harizanova , Irena Mihailova , Zara Cherkezova-Zheleva , Daniela Paneva , Milena Georgieva , Dimitar Tzankov , Georgi Avdeev , Christian Rüssel","doi":"10.1016/j.bsecv.2023.04.001","DOIUrl":"10.1016/j.bsecv.2023.04.001","url":null,"abstract":"<div>The synthesis of glass–crystalline materials in the system Na2O/CaO/SiO2/Fe2O3 with high concentrations of Fe2O3 (20, 25 and 30mol%) by applying the melt-quenching technique is reported. The melts spontaneously crystallize during pouring and the formation of magnetite (Fe3O4), hematite (α-Fe2O3) and ɛ-Fe2O3, as identified by X-ray diffraction (XRD) is observed. The microstructure and the elemental composition of the prepared materials are further investigated by scanning electron microscopy (SEM) and two different morphological types of Fe-containing crystals – needle-like and dendrite-shaped are detected. Mössbauer spectroscopy showed the presence of Fe3+ and Fe2+, as well as the existence of iron ions both in tetrahedral and octahedral coordination and the precipitation of hematite, ɛ-Fe2O3 and magnetite. The magnetic measurements on the prepared samples reveal ferrimagnetic properties with well defined hysteresis curves, although due to relatively small volume fraction of the iron-rich crystalline phases, the net magnetic moment is quite low compared to the bulk values for magnetite.</div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 1","pages":"Pages 23-32"},"PeriodicalIF":3.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000183/pdfft?md5=95af270bdc85f6835a45b06f250aa556&pid=1-s2.0-S0366317523000183-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135518246","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}

引用次数: 0

Characteristics of ceramic-like coatings obtained by plasma electrolyte oxidation on different Ti alloys 不同钛合金表面等离子体电解质氧化制备类陶瓷涂层的特性

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.04.002

Mariana Correa Rossi , Rafael Formenton dos Santos , Pedro Akira Bazaglia Kuroda , Conrado Ramos Moreira Afonso

{"title":"Characteristics of ceramic-like coatings obtained by plasma electrolyte oxidation on different Ti alloys","authors":"Mariana Correa Rossi , Rafael Formenton dos Santos , Pedro Akira Bazaglia Kuroda , Conrado Ramos Moreira Afonso","doi":"10.1016/j.bsecv.2023.04.002","DOIUrl":"10.1016/j.bsecv.2023.04.002","url":null,"abstract":"<div>Plasma electrolyte oxidation was used to modify the surface of different Ti alloys: c.p. Ti (α hcp structure), Ti–15Nb (α′+β structure) and Ti–33Nb–33Zr (stable β cubic structure) and the influence of elements and microstructure in the TiO2-based ceramic layer formed as well as the surface properties was analyzed. The XRD patterns confirmed the presence of TiO2 (anatase and rutile) in the c.p. Ti. For Ti–15Nb (wt.%) indicated the presence the same oxides also of pentoxide niobium (Nb2O5). For Ti–33Nb–33Zr (wt.%) indicated just the presence of rutile as the stable oxide one at room temperature and dioxide zirconium (ZrO2). In addition, the formation of calcium carbonate CaCO3 and calcium phosphate Ca3(PO4)2 was detected in all 3 materials. The ceramic-like layer was more homogeneous for c.p. Ti and Ti–15Nb and more irregular hole like-pores for Ti–33Nb–33Zr. Bioactive ions used were detected in all alloys and the roughness for Ti–15Nb was higher compared to c.p. Ti. and Ti–33Nb–33Zr. The contact angle for the three samples was higher than 100°.</div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 1","pages":"Pages 33-46"},"PeriodicalIF":3.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000195/pdfft?md5=2377a343740ac94829267bdab7f47e72&pid=1-s2.0-S0366317523000195-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49568855","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}

引用次数: 0

Enhancing bone tissue regeneration with rGO-coated Si-Ca-P bioceramic scaffold 氧化石墨烯包被硅钙磷生物陶瓷支架促进骨组织再生

IF 3.4 4区材料科学

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.05.002

Patricia Mazón , Jeevithan Elango , José Eduardo Maté-Sánchez de Val , Piedad N. De Aza

{"title":"Enhancing bone tissue regeneration with rGO-coated Si-Ca-P bioceramic scaffold","authors":"Patricia Mazón , Jeevithan Elango , José Eduardo Maté-Sánchez de Val , Piedad N. De Aza","doi":"10.1016/j.bsecv.2023.05.002","DOIUrl":"10.1016/j.bsecv.2023.05.002","url":null,"abstract":"<div>Ceramic-based bone graft substitutes have been extensively studied for bone tissue engineering, due to their biocompatibility and osteoconductivity. Additionally, several studies have shown how graphene and its derivatives, due to their unique properties, can strongly promote cell adhesion, by enhance cellular adherence, proliferation, and osteoblast differentiation, and how graphene-based materials can promote spontaneous osteoblastic differentiation. The aim of this study was the use of a calcium silicophosphate ceramic, previously prepared in our laboratory, that presents excellent in vitro bioactivity, optimizing its operation by rGO coating. After coating with rGO any significant differences were observed in diffraction peaks from starting calcium silicophosphate ceramic, and SEM analysis showed a rough and undulating surface that favored a high specific surface area for promoting cell adhesion, proliferation and differentiation of cells. It could be confirmed by in vitro cell cultured with ahMSCs, showing adhesion and growing for cells with interconnected filaments extending over the surface, covering it after 7 days.</div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 1","pages":"Pages 59-71"},"PeriodicalIF":3.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000262/pdfft?md5=f8a6db1c1cb28048eead56420ba4dc44&pid=1-s2.0-S0366317523000262-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48163826","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}

引用次数: 0