Preparation And Application Of Nano-Mg₂B₂O₅ And The Rare Earth Ultrafine Oxide

Nanomaterials are called "the 21st century most promising material", Nanoparticles is an important area of nano-materials,its size is situated between macroscopic and microscopic atom, nano-particles displays the brand-new characteristic, causes it to become forefront of aggregation physics, stimulated physicist, the chemist and the material worker's research enthusiasm from the domestic and foreign.Nano-materials science research mainly in three aspects: systematic study on the structural properties of nano-materials and spectral characteristics, development of new types of nano-materials and metals, non-metallic, organic and biological nano-particle materials applications.Nanomaterials from the birth, because has many good special performance, thus the people have conducted the extensive research in the practical application domain to it, and has obtained the success. A nanometer pipe fitting has the good different electricity performance and the high thermostability. A nanometer laminated film has the traditional compound materials and the modern material both's fine characteristic. Nanometer compound materials have the good structural stability and the manipuility.Nanomaterials as a result of its unique fine, light, thin, short, small, miniature structure, displays many unusual performance. Small-sized effect, surface interfacial effect, macroscopic quantum tunnel effect and so on.Divide into the solid law, the liquid law and the gas law according to the preparation raw material condition nanomaterials' preparation method.Characterization of nano-materials means are many, many new characterization method appeared, this nano-materials science played a role in facilitating development. Such as,UV-Vis spectroscopy, scanning tunnel microscope, transmission electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy far.The present stage, the nanotechnology newest research direction mainly includes the nanomaterials domain, nanometer biology and the nanometer medicine domain and the nanometer electronics domain.One-dimensional material with Mg₂B₂O₅ have light, high toughness and heat resistance, wear resistance, corrosion resistance and other properties in the composite material Reinforced in a wide range of applications, composite materials can improve the impact strength, modulus of elasticity, hardness and Pressure tensile strength and other mechanical properties. In addition, Mg₂B₂O₅ have excellent thermal fluorescence of a material, in high-strength ceramic materials and electronic fields have a broad application prospects.Because the yttrium oxide has heat-resisting, anti-corrosive, the coefficient of dielectrical loss to be high and when high temperature stable characteristics and so on.it is widely utilized in the ceramics, the electrical appliances, the optical glass and the oxygen sensor. Serves as the carbon monoxide and the hydrogenation becomes the ethane the catalyst, joins the oxidation to run metal into cracks may strengthen its catalyzed effect. Along with modern industry's development, the superfine yttrium oxide have been apply in high new industry, such as, the aviation, the atomic energy and the high temperature superconducting material and so on,and it has demonstrated its outstanding performance.CeO₂ is a typical example of rare earth oxides. Because of its unique 4f electronic structure, its compounds have a special optical, and magnetic properties known as a treasure trove of new material. Ultrafine CeO₂-based composite oxide powder is defined as doping in CeO₂ lattice Pr, Zr, Th, Ca, and other metal cations and the formation of new materials, and is widely used in ceramic materials, catalytic materials, polishing materials, solid electrolyte material, luminescent materials and so on.