- In the past few decades, researchers from all over the world have conducted extensive research on high-medium microwave dielectric ceramics. At present, high-medium microwave ceramics are mainly concentrated in BaO-Ln2O3-TiO2, CaO-Li2O-Ln2O3-TiO2 and Pb-based perovskite series, among which Ba6-3xLn8+ is a new type of tungsten bronze high-medium microwave ceramic based on BaO-Ln2O3-TiO2 2xTi18O54 has attracted the attention of researchers all over the world because of its excellent microwave dielectric properties.
- A lot of work has been done in the research of Ba6-3xLn8+2xTi18O54 solid solution ceramics with new tungsten bronze structure, but there are still many problems worth studying. At present, microwave communication technology is developing in the direction of integration, miniaturization, modularization, and environmental protection. In order to adapt to this development trend, the research of Ba6-3xLn8+2xTi18O54 solid solution ceramics will also be directed towards low-temperature sintering, environmental protection, and new preparation. direction development.
- The special conductivity of sodium tungsten bronze makes it possible to become a new type of solid electrolyte (also known as fast ion conductor) material. It has been reported that NaxWO3 is used as an ion reversible electrode. The synthesis and research of solid electrolytes is a very active field of inorganic solid chemistry at present. The ion mobility of excellent fast ion conductors is close to that of aqueous electrolyte solutions, and their conductivity is comparable to that of strong aqueous electrolyte solutions. Solid electrolytes have replaced the usual electrolyte solutions and have become a revolution in electrochemistry. Therefore, the research and application of tungsten bronze series compounds will have very good application prospects.
- Many niobate crystals with tungsten bronze structure have excellent electro-optic and nonlinear optical properties, so they are widely used in the fields of holographic storage, coupling amplification, optical phase conjugation, and optical information processing
- The preparation process of lead metaniobate high-temperature ceramics with tungsten bronze structure involves high-temperature piezoelectric ceramics, including the use of nano-materials, compounding of briquettes and powders, and powder synthesis processes combining high and low temperatures, improved ball milling conditions, and multiple mixing and fine-tuning. Grinding, strict control of sintering temperature, shortening of holding time, appropriate fast cooling speed, cold processing precision and increased polarization power, etc. Using this technology can increase the preparation amount of ceramic powder to 10kg, and improve the bulk density, insulation resistance, piezoelectric performance and consistency of ceramic components, and also improve the yield of products, and the technology is simple and easy to master .
- Tungsten bronze (TB) type crystal material has excellent performance and great development potential, which is closely related to its structure. Molecular design is the bridge connecting the structure and performance of TB-type crystal materials. The application research of TB-type crystal materials is progressing rapidly. SBN, PBN and other classic TB-type crystal materials, the preparation and performance research of ceramic materials and thin film materials are active; compared with foreign countries. In China, there are few researches on TB-type crystal materials using w element in B position. The TB structure film of phosphate has a good prospect of superconducting application. It has attracted great attention, but domestic research in this area is weak.
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