Ceramics-silikaty最新文献

Phase Formation Study of Solid-State LLZNO and LLZTO via Structural, Thermal, and Morphological Analyses 基于结构、热、形貌分析的固态llzzno和LLZTO相形成研究

4区材料科学

Ceramics-silikaty Pub Date : 2025-10-28 DOI: 10.3390/ceramics8040132

Chengjian Li, Frank Kern, Lianmeng Liu, Chris Parr, Andreas Börger, Chunfeng Liu

{"title":"Phase Formation Study of Solid-State LLZNO and LLZTO via Structural, Thermal, and Morphological Analyses","authors":"Chengjian Li, Frank Kern, Lianmeng Liu, Chris Parr, Andreas Börger, Chunfeng Liu","doi":"10.3390/ceramics8040132","DOIUrl":"https://doi.org/10.3390/ceramics8040132","url":null,"abstract":"Garnet-type Li7La3Zr2O12 (LLZO) is a solid electrolyte candidate for ASSLBs, owing to its wide electrochemical window and intrinsic safety. Yet phase-pure LLZO remains difficult because secondary phases form, and the transition towards the tetragonal phase, aliovalent doping, mitigates these issues. Still, the phase formation pathway is not fully understood. Here, we present comparative in situ and ex situ studies of Nb- and Ta-doped LLZO (LLZNO and LLZTO) that were synthesized by a solid-state reaction. In situ/ex situ XRD reveals that the lithium precursor dictates the reaction path: differing decomposition temperatures of the lithium precursor define reaction windows that control cubic-phase purity and particle morphology. In air, limited Li diffusion favors oxycarbonates and pyrochlore, necessitating 950–1050 °C to achieve phase-pure cubic LLZO. Under N2, faster Li availability and diffusion enable uniform nucleation and a route to cubic LLZO without detectable secondary phases. These findings demonstrate the coupled effects of temperature, precursor, dopant, and atmosphere, guiding process optimization and scalable production.","PeriodicalId":9857,"journal":{"name":"Ceramics-silikaty","volume":"8 4","pages":"132-132"},"PeriodicalIF":0.0,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2571-6131/8/4/132/pdf?version=1761666823","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147916371","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

Inhibition Mechanism of Corrosion of Aluminium Alloy in Ordinary Portland Cement Paste by Polyaluminium Sulphate 聚合硫酸铝对普通硅酸盐水泥浆中铝合金的缓蚀机理

4区材料科学

Ceramics-silikaty Pub Date : 2025-03-10 DOI: 10.3390/ceramics8010027

Haining Geng, Qi Wei, Haosen Ma, Qiu Li

{"title":"Inhibition Mechanism of Corrosion of Aluminium Alloy in Ordinary Portland Cement Paste by Polyaluminium Sulphate","authors":"Haining Geng, Qi Wei, Haosen Ma, Qiu Li","doi":"10.3390/ceramics8010027","DOIUrl":"https://doi.org/10.3390/ceramics8010027","url":null,"abstract":"The expansion, cracking and deterioration of properties during utilisation and solidification of municipal solid waste incineration bottom ash are key problems that are caused by the reaction of metallic aluminium in the bottom ash in the highly alkaline environment of hardened Portland cement. In this study, polyaluminium sulphate (PAS) was introduced into ordinary Portland cement (OPC) to inhibit the corrosion of aluminium alloy. The results indicate that PAS successfully inhibited the corrosion of Al in hardened OPC paste, prevented the expansion and cracking, reduced the amount of hydrogen gas release and formed a thinner and dense corrosion layer on the Al plate surface. The mechanism of corrosion inhibition of Al by PAS was the increase of initial Al(OH)4− concentration by hydrolysis, which expanded the pH range of passivation and transformed the porous loose bayerite layer to a dense homogeneous one around the Al plate without modification of the corrosion product (bayerite). The corrosion rate of the Al alloy in hardened OPC paste was reduced by 213 times by the addition of PAS, from 288.30 mm a−1 without PAS addition to 1.35 mm a−1 with PAS addition. This study casts light on the effective inhibition of corrosion of the Al alloy in OPC.","PeriodicalId":9857,"journal":{"name":"Ceramics-silikaty","volume":"8 1","pages":"27-27"},"PeriodicalIF":0.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2571-6131/8/1/27/pdf?version=1741608097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147912542","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

Effect of (Ba1/3Nb2/3)4+ Substitution on Microstructure, Bonding Properties and Microwave Dielectric Properties of Ce2Zr3(MoO4)9 Ceramics （Ba1/3Nb2/3）4+取代对Ce2Zr3(MoO4)9陶瓷微观结构、键合性能和微波介电性能的影响

4区材料科学

Ceramics-silikaty Pub Date : 2024-08-29 DOI: 10.3390/ceramics7030077

Huamin Gao, Xiangyu Xu, Xinwei Liu, Xiaoyu Zhang, Mingling Li, Jialun Du, Haitao Wu

引用次数: 1

Excellent Energy Storage and Photovoltaic Performances in Bi0.45Na0.45Ba0.1TiO3-Based Lead-Free Ferroelectricity Thin Film bi0.45 na0.45 ba0.1 tio3基无铅铁电薄膜的优异储能和光伏性能

4区材料科学

Ceramics-silikaty Pub Date : 2024-08-01 DOI: 10.3390/ceramics7030068

Jianhua Wu, Tiantian Zhang, Xing Gao, Lei Ning, Yanhua Hu, Xiaojie Lou, Yunying Liu, Ningning Sun, Yong Li

{"title":"Excellent Energy Storage and Photovoltaic Performances in Bi0.45Na0.45Ba0.1TiO3-Based Lead-Free Ferroelectricity Thin Film","authors":"Jianhua Wu, Tiantian Zhang, Xing Gao, Lei Ning, Yanhua Hu, Xiaojie Lou, Yunying Liu, Ningning Sun, Yong Li","doi":"10.3390/ceramics7030068","DOIUrl":"https://doi.org/10.3390/ceramics7030068","url":null,"abstract":"Inorganic dielectric films have attracted extensive attention in the field of microelectronic and electrical devices because of their wide operating temperature range, small size, and easy integration. Here, we designed and prepared eco-friendly (1-x)Bi0.45Na0.45Ba0.1TiO3-xBi(Mg1/3Nb2/3)O3 multifunctional ferroelectric thin films for energy storage and photovoltaic. The results show that Bi(Mg1/3Nb2/3)O3 can effectively improve the energy storage performance. At x = 0.05, the energy storage density and efficiency are as high as 73.1 J/cm3 and 86.2%, respectively, and can operate stably in a wide temperature range. The breakdown field strength of the thin films increased significantly, and the analysis showed that the addition of Bi(Mg1/3Nb2/3)O3 caused a change in the internal conduction mechanism. At the same time, the generation of polar nanoregions increases the relaxation characteristics, thus improving the energy storage properties. In addition, the thin film material also has excellent ferroelectric photovoltaic properties. This work represents a new design paradigm that can serve as an effective strategy for developing advanced multi-functional materials.","PeriodicalId":9857,"journal":{"name":"Ceramics-silikaty","volume":"7 3","pages":"1043-1052"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2571-6131/7/3/68/pdf?version=1722497542","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147882336","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: 3

SYNTHESIS AND CHARACTERISATION OF Ni-DOPED ZnO THIN FILMS PREPARED BY CHEMICAL BATH DEPOSITION 化学浴沉积法制备掺镍氧化锌薄膜的合成与表征

4区材料科学

Ceramics-silikaty Pub Date : 2023-09-20 DOI: 10.13168/cs.2023.0042

Hale Yildizay

引用次数: 0

CAUSES OF DEFECTS IN HISTORICAL CERAMIC MATERIALS WITH Ca-RICH BODY 历史上富钙陶瓷材料缺陷的原因分析

4区材料科学

Ceramics-silikaty Pub Date : 2023-09-20 DOI: 10.13168/cs.2023.0039

Pavla Dvorakova

引用次数: 0

ANTIOXIDANT AND ANTI-TUMOUR ACTIVITIES OF INULA VISCOSA L EXTRACT-LOADED NANOFIBROUS MATS FOR BIOMEDICAL APPLICATIONS 黏菊提取物纳米纤维垫的抗氧化和抗肿瘤活性及其生物医学应用