Alumina ceramic plate
As one of the most widely used materials in advanced ceramics, alumina ceramics, accompanied by the development of the entire industry, show the following trends: (1) the level of technical equipment will be rapidly improved: The development of computer technology and digital control technology has promoted the technological progress and rapid development of advanced ceramic materials industry, such as automatic control continuous sintering kiln, high-power large-capacity grinding equipment, high-performance powder granulation equipment and other advanced complete sets of equipment have promoted the overall level of the industry. At the same time, the production efficiency, product quality and other aspects are also significantly improved; (2) The level of product quality continues to improve: domestic microcrystalline alumina ceramic products from scratch, industrial scale from small to large, product quality from low to high, has experienced a rapid development process; (3) The scale of the industry will expand rapidly: as the basic material of other industries or fields, microcrystalline alumina ceramic products are affected and limited by the development level of other industries. From the application of alumina ceramics, the application range is getting wider and wider, and the amount is getting larger and larger, especially in the anti-wear engineering and building ceramics production, the increase in the amount will be more significant.
Alumina long porcelain rod
Alumina ceramic is a ceramic material with alumina (Al2O3) as the main body, which is used in thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic washing is required. Alumina ceramics is a kind of widely used ceramics, because of its superior performance, the application in modern society has been more and more widely, to meet the needs of daily use and special performance. Alumina ceramics are divided into high purity type and ordinary type two.
High purity alumina ceramic series Al2O3 content of more than 99.9% of the ceramic material, due to its sintering temperature as high as 1650-1990 ℃, transmission wavelength of 1 ~ 6μm, generally made of molten glass to replace platinum crucible; Use its light transmission and alkali metal corrosion resistance as sodium lamp tube; It can be used as integrated circuit board and high frequency insulation material in the electronics industry.
Ordinary alumina ceramics are divided into 99 porcelain, 95 porcelain, 90 porcelain, 85 porcelain and other varieties according to the Al2O3 content, and sometimes the Al2O3 content is also classified as ordinary alumina ceramics series. Among them, 99 alumina porcelain materials are used to make high temperature crucible, refractory furnace pipe and special wear-resistant materials, such as ceramic bearings, ceramic seals and water valves; 95 alumina porcelain is mainly used as corrosion resistance and wear resistance parts; The 85 porcelain is often mixed with talc to improve the electrical properties and mechanical strength, and can be sealed with molybdenum, niobium, tantalum and other metals, and some are used as electric vacuum devices.
