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Special ceramic materials

Properties of special ceramic materials are determined by two factors. First, the structure of the material, the main bonding properties, the crystal structure. They determine the properties of ceramic materials, such as high temperature resistance, semiconductor and insulation. Secondly, microstructure, including distribution, grain size, shape, pore size distribution, impurities, defects, etc. Ordinary ceramics with clay, feldspar, quartz as raw materials, made by preparation, sintering. This kind of ceramic is hard, no oxidation rust, corrosion resistance, non-conductive, high temperature resistance, [...]

Industrial use of vanadium

Add a few percent of vanadium in steel, can make the elasticity of steel, strength increase, anti – wear and anti – crack very good, both high temperature resistance and anti – cold, no wonder in the automobile, aviation, railway, electronic technology, defense industry and other sectors, everywhere can be seen to trace vanadium. In addition, vanadium oxide has become one of the best catalysts in the chemical industry, including “chemical bread” Mainly used in the manufacture of high-speed cutting [...]

Characteristics and application of barium titanate ceramics

Barium titanate ceramics are ceramic materials with barium titanate (BaTiO3) or its solid solution as the main crystal phase. The main raw materials are barium carbonate and titanium dioxide. Generally, barium titanate is synthesized at 1200℃ first, and then modified oxide is added. After fine grinding, it is sintered at 1400℃ or so. Used as dielectric material of capacitor and make many kinds of piezoelectric devices Barium titanate ceramics are ceramics with barium titanate or its solid solution as the [...]

Types and applications of new ceramic materials

Several new ceramic materials are mainly introduced. 1. Engineering ceramics Engineering ceramics, it is mainly used in high temperature, also known as high temperature structural ceramics. This kind of ceramic takes alumina as the main raw material, which has the advantages of high strength, high hardness, high oxidation resistance, corrosion resistance, wear resistance, ablative resistance and so on under high temperature. It can withstand the high temperature of 1980℃ in the air. It is an important material in space technology, military [...]

There are seven requirements for an ideal anode material

The ideal anode material must have the following seven conditions: low chemical potential, and the anode material to form a large potential difference, so as to obtain a high power battery; High cycle capacity should be available; In the anode material, Li+ should be easy to be embedded and detached, with higher coulombic efficiency, so that the charging and discharging voltage can be relatively stable in the process of Li+ removal. Good electronic and ionic conductivity; Good stability, electrolyte [...]

Key technologies and core materials of OLED

Born for the future, OLED leads the innovation of terminal ID OLED was first discovered in the lab by chinese-american professor deng qingyun. The principle is to make a current pass through special organic luminescent materials, and under the action of an electric field, stimulate the organic materials to make them glow. It’s a process that converts electrical energy into light energy. OLED is the basic structure of the layer of organic material to clamp on indium tin oxide (ITO) as [...]

Research on nano aluminum nitride in thermal conductive plastics

1. Heat-conducting silica gel and epoxy resin: Ultra-high thermal conductivity nano-aln composite silica gel has good thermal conductivity, good electrical insulation, wide electrical insulation service temperature (working temperature -60℃- 200℃), lower consistency and good construction performance. Products have reached or exceeded imported products, because can replace similar imported products and widely used in electronic devices heat transfer medium, improve work efficiency. Such as CPU and radiator gap, high-power audion, thyristor element, diode, and the substrate contact with the thin seam [...]

Thermal and optical properties of nanometer tin oxide

In terms of thermal properties, nano SnO2 can be attributed to an ATO raw material, and its heat insulation mechanism: The SnO2 crystal has a regular tetrahedral rutile structure, and the anion coordination number is 6∶3. Each tin ion is adjacent to 6 oxygen ions, and each oxygen ion is adjacent to 3 tin ions. After antimony doped ions in SnO2, occupy the position of the lattice Sn4 +, forming a positive charge one price center SbSn and an extra [...]

Types and applications of zirconium oxide materials

Zirconium oxide is a kind of high temperature resistance, corrosion resistance, wear resistance and good electrical conductivity of inorganic non-metallic materials, that should be used for refractory material field in the early 1920 s, until the mid – 1970 – s, Europe and the United States, the advanced countries in the world have had the same person research and development of zirconium oxide production technology and zirconium oxide series products production, further to expand application field of zirconium oxide [...]

Select bismuth titanate specific work introduction

Bil2Ti020 material was prepared by solution hydrothermal method. Crystals with graded structure such as micron ball, micron flower, nanorod and nanowire were synthesized. For controllable morphology, this paper analyzes the reaction temperature, reaction time, pH and PVA concentration on Bil2Ti020 morphology and structure, the influence of the reaction parameters of the material controllable morphology, proposed the nanoparticles a micron spend a growth mechanism of nanowires – micro ball and focuses on the material of optical and light catalytic properties. [...]