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4.296 Aktuelle Fachpublikationen in Journal of the American Ceramic Society

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High‐Temperature Mechanical Behavior of ZrB2‐Based Composites with Micron‐ and Nano‐Sized SiC Particles

21.01.2018 | Shuqi Guo, Journal of the American Ceramic Society, 2018

Abstract Using micron‐ and nano‐sized SiC particles as reinforcement phase, two ZrB2‐SiC composites with high strength up to 1600°C were prepared using high‐energy ball‐milling, followed by hot‐pressing. The composite microstructure comprised finer equiaxed ZrB2 and SiC grains and ...

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Hierarchical growth of BiOCl on SrO‐Bi2O3‐B2O3 glass ceramics for self‐cleaning applications

20.01.2018 | V. P. Singh, Rahul Vaish, Journal of the American Ceramic Society, 2018

Abstract We grown hierarchical structure of bismuth oxycloride (BiOCl) on SrO‐Bi2O3‐B2O3 (SBBO) transparent glass ceramic. SBBO glass‐ceramics were fabricated via conventional melt‐quenching technique while BiOCl was grown by etching the glass via HCl. Enhanced visible light driven ...

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Role of oxygen vacancies in long persistent phosphor Ca2Ga2GeO7: Zn2+

20.01.2018 | Junhe Zhou, Zhangwen Long, Qi Wang, Zhou Dacheng, Xuhui Xu, Jianbei Qiu, Journal of the American Ceramic Society, 2018

Abstract Acting as the electron trap, oxygen vacancies can strongly influence the long persistent luminescence (LPL) properties were verified in Ca2Ga2GeO7: Zn2+ (CGGZ) phosphor. The existence of oxygen vacancies in this self‐excitation material was confirmed by a simple fluorescence probe ...

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Effects of catalysts on polymerisation and microstructure of sol‐gel derived bioglasses

20.01.2018 | Basam A. E. Ben‐Arfa, Hugo R. Fernandes, Isabel M. Miranda Salvado, José M. F. Ferreira, Robert C. Pullar, Journal of the American Ceramic Society, 2018

Abstract This work investigates the effects of the type and concentration of acid catalysts on the microstructural features of silica‐rich bioactive glasses (75Si‐16Ca‐5Na‐4P, in mol%) synthesised from acetate and nitrate precursor salts, using an innovative rapid sol‐gel method, followed by ...

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Improvement of self‐activated luminescence from introduced cation‐disorder in Sr6V2O11

20.01.2018 | Longqing Mi, Yanlin Huang, Xuanxuan Liu, Lin Qin, Hyo Jin Seo, Journal of the American Ceramic Society, 2018

Abstract Adjusting the elemental composition of a host is regarded to be an effective strategy to tune its luminescent properties such as peak energy, emission efficiency and bandwidth. In this work, the cation‐substitution of (Ba2+→Sr2+) in self‐activated Sr6V2O11 was conducted to ...

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Structural phase transition and electrical properties of Sr2+ substituted porous PMN‐PZT ceramics

20.01.2018 | Wei Liu, Lin Lv, Yanzhong Wang, Chaorui Xue, Yingge Dong, Jianhong Wang, Jinlong Yang, Journal of the American Ceramic Society, 2018

Abstract In this study, Sr2+ modified porous PMN‐PZT ceramics with one‐dimensional pore channels were produced by the ionotropic gelation process of alginate/PMN‐PZT suspensions. The ion‐exchange method was employed during the fabrication procedure to adjust the content of SrO addition. With ...

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Preparation and Photoluminescence Enhancement of Au Nanoparticles Embedded LaPO4:Eu3+ Inverse Opals

20.01.2018 | Zhuangzhuang Chai, Zhengwen Yang, Anjun Huang, Chengye Yu, Jianbei Qiu, Zhiguo Song, Journal of the American Ceramic Society, 2018

Abstract In this work, we present a facile preparation approach of Au nanoparticles embedded LaPO4:Eu3+ inverse opal photonic crystals. In the typical preparation process, the transparent LaPO4:Eu3+ sol including HAuCI4 was infiltrated into the opal templates. After the sintering, the 10‐20 nm ...

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Grain boundary driven mechanical properties of ZrB2 And ZrC‐ZrB2 nanocomposite: A molecular simulation study

19.01.2018 | Md. Riaz Kayser, Ashfaq Adnan, Journal of the American Ceramic Society, 2018

Abstract In this study, we report the grain boundary driven mechanical behavior of two polycrystalline ultra‐high‐temperature ceramics (UHTCs), zirconium diboride (ZrB2) and zirconium carbide (ZrC) with zirconium diboride (ZrC‐ZrB2). These nanocomposites were investigated using large‐scale ...

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Fabrication of dense polymer derived silicon carbonitride ceramic bulks by PIP processes without losing piezoresistivity

19.01.2018 | Baisheng Ma, Yiguang Wang, Journal of the American Ceramic Society, 2018

Abstract Dense polymer‐derived silicon carbonitride (SiCN) ceramic bulks were fabricated by powder consolidation following precursor infiltration and pyrolysis (PIP) densification. The density and open porosity of the ceramics varied from 1.42 g/cm3 and 32.75% before the PIP to 2.29 g/cm3 and ...

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Fabrication of dense polymer derived silicon carbonitride ceramic bulks by PIP processes without losing piezoresistivity

19.01.2018 | Baisheng Ma, Yiguang Wang, Journal of the American Ceramic Society, 2018

Abstract Dense polymer‐derived silicon carbonitride (SiCN) ceramic bulks were fabricated by powder consolidation following precursor infiltration and pyrolysis (PIP) densification. The density and open porosity of the ceramics varied from 1.42 g/cm3 and 32.75% before the PIP to 2.29 g/cm3 and ...

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