Both zirconia ceramic balls and silicon nitride ceramic balls are ceramic balls, and can also be used as grinding balls. With high precision, they can also be used as valve balls and bearing balls. Their uses are similar.
If compared from the composition and characteristics, there is still a big difference.
 |  |
1.Physical Properties Comparison
In terms of physical properties, zirconia ceramic balls are excellent in wear resistance and corrosion resistance, and silicon nitride ceramic balls also have the same excellent performance. At the same time, silicon nitride ceramic balls also perform well in machining accuracy.
Therefore, in the application field of high-precision machinery industry, such as super-precision bearings, in addition to the widespread use of steel balls, ceramic balls have also begun to popularize in precision bearings. Compared with the bearing steel ball, the ceramic ball has the characteristics of anti-corrosion and anti-rust, and the processing accuracy is even better than that of the steel ball.
At the same time, it can withstand high temperature in high temperature environment. Therefore, ceramic balls have appeared in bearings and other ultra-precision machinery fields, such as guide rails, linear sliding accessories, etc., and have a tendency to replace steel balls.
2.Color
More than 80% of zirconia ceramic balls are mainly white, and white zirconia ceramic balls are their natural color. But sometimes it is seen that the ceramic ball is pale yellow or gray, because the zirconia material contains a small amount of impurities. Zirconia ceramic balls have the advantages of high toughness, high flexural strength and high wear resistance, excellent thermal insulation performance, and thermal expansion coefficient close to that of steel balls.
The silicon nitride ceramic ball is mainly made of carbon black. It is extremely resistant to high temperature, and its strength can be maintained at a high temperature of 1200 ° C without falling. After being heated, it will not melt into a melt. It is one of the hardest materials in the world.
 |  |
Applicable fields：
Semiconductor, LCD manufacturing equipment, electroplating equipment, synthetic fiber manufacturing equipment, optical film equipment, various heat treatment furnaces, vacuum equipment, etc.; can also be used in composite bearings, cold working tools, various guide wheels, various valves, vacuum equipment and in various harsh environments.
