Ceramics | Free Full-Text | Bismuth-Germanate Glasses: …
Bismuth-germanate glasses, which are well known as a promising active medium for broadband near-infrared spectral range fiber lasers and as an initial matrix for nonlinear optical glass ceramics, have been synthesized in a 5–50 mol% Bi2O3 wide concentration range. Their structural and physical characteristics were studied by Raman and FT-IR …
Processing and properties of translucent bismuth sodium titanate ceramics
Experimental. Bismuth sodium titanate (BNT) ceramics of the composition Bi 0.5+x Na 0.5-x TiO 3 with x = 0.005 and 0.010 were prepared by the conventional solid state route. Starting materials were bismuth oxide Bi 2 O 3 (Sigma Aldrich, purity 99.9 %), sodium hydrogen carbonate NaHCO 3 (Merck, purity ≥ 99.7 %) and titanium dioxide TiO …
Synthesis and characterization of strontium and barium bismuth …
The scanning electron micrographs of the glass ceramic samples obtained by thermal treatment of the glasses at different temperatures are presented in Fig. 3, Fig. 4.It can be observed that the surface microstructures of BBB500 and SBB500 (Figs. 3 a & 4 a) contain crystalline aggregates comprising numerous randomly oriented fine …
Structural and Electrical Properties of Bismuth Ferrite Ceramics
The polycrystalline ceramics samples of BiFeO 3 were prepared using the solid-state reaction method followed by rapid liquid phase sintering. High purity starting powders of Bi 2 O 3 (99.999 %) and Fe 2 O 3 (99.99 %) were carefully weighed according to the stoichiometric proportions (3 % bismuth excess to compensate the Bi loss). …
Journal of the American Ceramic Society
The system boundary considered in the hybrid life-cycle assessment (LCA) of lead zirconate titanate (PZT), sodium bismuth …
Bismuth Tungstate Market Size: Market Outlook and Market …
Bismuth Tungstate market types are categorized based on purity levels, including 99%, %, %, %, and others. Different industries prefer different purity levels depending on their specific needs and ...
New Bismuth Sodium Titanate Based Ceramics and Their …
Important ferroelectric or antiferroelectric oxide ceramics for dielectric, ferroelectric, piezoelectric, electrostrictive, and/or pyroelectric applications are restricted to …
Enhanced piezoelectric performance in Na0.5Bi4.5Ti4O15‐based bismuth
Journal of the American Ceramic Society (JACerS) is a leading ceramics journal publishing research across the field of ceramic and glass science and engineering. Abstract In this work, Na0.5Bi4.5Ti3.94–xMn0.06NbxO15+y bismuth-layered ferroelectric ceramics were prepared by a solid-state reaction method.
Structural and electrical characteristics of Gd3+ and Dy3
In the compound n number of pseudo perovskite layers (A n−1 B n O 3n+1) 2-are stacked between two bismuth oxide layers. The pseudo perovskite layer and the bismuth oxide layer can be considered to be stacked alternatively along the c axis [7, 8]. The number of pseudo perovskite layers, n in the compound can vary from 1 to 10.
Piezoelectricity in Ceramics of Ferroelectric Bismuth Compound …
Piezoelectric properties have been studied on ferroelectric ceramics comprising bismuth compounds with layer structure, PbBi 2 Nb 2 O 9, PbBi 4 Ti 4 O 15, SrBi 4 Ti 4 O 15 and Na 0.5 Bi 4.5 Ti 4 O 15. These ceramics have the high mechanical quality factor Q (2000∼7200), low aging rate of frequency constant Nt (30∼60 ppm/time …
(PDF) Use of the Ferroelectric Ceramic Bismuth Titanate as …
Bismuth titanate (Bi4Ti3O12, BiTi) has been considered as a potential candidate for replacing PZT at the middle of this temperature range, with many possible applications, since it has a Curie ...
Critical raw materials in the global high-throughput ceramic …
In the ceramic tile industry Bismuth is used as ink to produce a bas-relief pattern on the glaze surface (sink effect). In the past, this effect was achieved typically by applying low melting point compounds such as V 2 O 5, but Vanadium pentoxide …
NTC characteristics of bismuth based ceramic at high …
NTC characteristics of a ceramic based on Bi2O3 doped with TiO2, Ta2O5 and WO3 have been studied over a temperature range of 100 to 700°C. The material was pressed into pellets and sintered in ...
BISMUTH SODIUM POTASSIUM TITANATE-BARIUM
Disclosed are a bismuth sodium potassium titanate-barium titanate (BNKT-BT)-based composite ceramic material with high depolarization temperature and a preparation method thereof, belonging to the technical field of piezoelectric ceramics of electronic materials. The chemical general formula of the BNKT-BT based composite …
Effect of grain size on dielectric and piezoelectric …
attributed mainly to the grain size of the ceramics. 1 Introduction There is an urgent need for ultrahigh-temperature piezo-electric devices in high-technology domains such as avia-tion, energy and chemical industries. Aurivillius-type bismuth layer-structured piezoelectric ceramics possess the merits of high Curie temperature, low aging rate, good
Ceramics | Free Full-Text | Bismuth-Germanate Glasses: …
Bismuth-germanate glasses, which are well known as a promising active medium for broadband near-infrared spectral range fiber lasers and as an initial matrix for nonlinear …
Piezoelectric and structural properties of bismuth sodium
Piezoelectric and structural properties of bismuth sodium potassium titanate lead-free ceramics for energy harvesting. Published: 26 June 2021. Volume 32, pages …
Structural, morphological, optical and dielectric properties of …
The XRD pattern of NBT ceramic is illustrated in Fig. 1 a.As can be seen, a Well-defined splitting of (1 1 0) R, (2 0 2) R, (0 2 4) R and (3 0 0) R peaks was noticed, which indicates the rhombohedral symmetry with small amount of Na 0.5 Bi 4.5 Ti 4 O 15 as an impurity phase [35].A representative selection of the Bragg peaks of NBT is displayed …
Bismuth layered ceramic solid solution with high …
New codoped composite bismuth layered compound (CaBi)1-x(LiMn)xBi6NbTi5O24 ceramics were obtained in a wide sintering temperature range. • The highest d33 was achieved at a low sintering temperature of 960 oC despite the moderate density.. The piezoelectricity (d33) was increased about 2 or 3 times of that of the end …
Bismuth-telluride discovery brings spintronics devices closer
July 7, 2009. Surface electron band structure of bismuth telluride. Credit: Yulin Chen and Z. X. Shen. Researchers at the DOE's SLAC National Accelerator Laboratory and Stanford …
Journal of the American Ceramic Society
Journal of the American Ceramic Society (JACerS) is a leading ceramics journal publishing research across the field of ceramic and glass science and engineering. Bismuth layer-structured ferroelectric ceramics of (1−x)Na0.5Bi2.5Nb2O9–xLiNbO3 (NBN–LN, 0≤x≤0.2) were synthesized by a traditional solid-state reaction. ... It was found ...
Ceramic bismuth titanate for high – temperature electro …
Bismuth titanate Bi4Ti3O12 (BIT), which belongs to the Aurivillius family, is one of the most interesting compounds among the bismuth-based layered ceramics. BIT is a ferroelectric material with wide applications in the electronic industry, as capacitors, transducers, memory devices and sensors. BIT ceramics materials with m= 3 were prepared by …
New lithium bismuth phosphate ceramic: crystal structure
New lithium bismuth phosphate ceramic: crystal structure, microstructure, microwave dielectric properties and co-firing compatibility with aluminum electrode. …
Bismuth Statistics and Information | U.S. Geological Survey
Bismuth has been used in solders, a variety of other alloys, metallurgical additives, and medications and in atomic research. In the early 1990s, research began on the …
Bismuth Metal & Pure Bismuth Materials
Bismuth is used as a compound in many products, such as the coating industry, pigments, friction materials, catalysts in the plastic, lubricants, and cosmetics. Bismuth oxides: Used as oxides in glass, ceramics, varistors, arrestors, capacitors, ferrites, and coatings.
Bismuth titanate based piezoceramics: Structural evolutions …
Here, a type of bismuth titanate based ceramics (Bi 3.96 Ce 0.04 Ti 2.97 W 0.015 Nb 0.015 O 12, abbreviated as BCTWN) was prepared by traditional solid-phase reaction technology, and the effects of sintering temperature on the multiple microstructures and electrical properties for BCTWN ceramics were investigated in details. The results …
Piezoelectric and structural properties of bismuth sodium
The development of piezoelectric ceramics with high energy conversion efficiency is of decisive importance for the requirements of the advanced energy harvesting devices toward miniaturization and integration. Lead titanate-zirconate (PZT) piezoceramics are the most widely used energy harvesting (EH) materials due to their excellent …
Bismuth
Pigments produced from bismuth are also used in the manufacture of paints and ceramics. Bismuth for a greener environment. With an increasing focus on reducing the consumption of lead globally, bismuth alloys have found roles as efficient substitutes. ... The medical industry has also found it to be highly effective in X-ray shielding. In some ...
Low-melting bismuth–borate glass: composition development
The properties of low-melting lead-free glass based on the system ZnO–Bi 2 O 3 –B 2 O 3 with K 2 O, Al 2 O 3, and SiO 2 additions are studied experimentally and the results are presented. The complete spreading and softening temperature ranges are determined. The computed values of the CLTE and refractive indices of the glasses are …
U-shaped micropores induced dielectric and …
U-shaped micropores induced dielectric and piezoelectric tunability in bismuth sodium titanate-based ceramics Tong Lu1, Huiling Du1,*, Nan Kong1, Haodong Li1, Shiyu Xu1, Zhao Li1, and Xian Du1 1College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China Received: 8 December 2022