Characteristics and Development Trends of Alumina Ceramics
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. peculiarity
1. High hardness
Measured by the Shanghai Institute of Silicate of the Chinese Academy of Sciences, its Rockwell hardness is HRA80-90,
the hardness is second only to diamond, far more than the wear resistance of wear-resistant steel and stainless steel.
2. Excellent wear resistance
The wear resistance is 266 times that of manganese steel and 171.5 times that of high chromium cast iron. Under the same working conditions, the service life of the equipment can be extended at least ten times.
3. Light weight
Its density is 3.5g/cm, which is only half that of steel, which can greatly reduce the load of equipment. development trend 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.