Silicon nitride ceramic balls, also known as Si3N4, belong to the type of ceramic balls, which are mainly composed of silicon and nitrogen, and to some extent contain other oxides and other inorganic elements. It is an interstitial solid solution with nitrogen in the form of a triple bond at room temperature, and it has a hexagonal crystalline structure with specific gravity of 3.2~3.3 and a hardness of about HRA90.
Silicon nitride ceramic balls have excellent physical and chemical properties, good wear resistance, superior corrosion resistance, good dimensional stability, thermal shock resistance, good mechanical properties and high bending and compression strength, especially for bearing applications. Its hardness is second only to diamond and its toughness is second to none. It is an ideal material for high temperature, low temperature and the harsh environment of use.
Silicon nitride ceramic balls are both non-metallic and non-magnetic, and they can be electroplated and perfused with lubricants and other surface treatments when they are used as ball bearings. Their performance and accuracy are not affected and they can be used in a variety of harsh environment operations.
Silicon nitride ceramic balls can be used in a wide range of bearing applications, such as linear guides, linear bearings, ball screws, cutting tools and knives, wind turbines, automotive and aerospace applications. In addition, due to the excellent mechanical, wear and corrosion properties of silicon nitride ceramic ball bearings, there is no need for anti-rust treatment and maintenance, saving manpower and material resources.
In short, silicon nitride ceramic balls are increasingly being used as a substitute for steel balls, and the bearing accuracy of silicone nitride ceramic balls is improved because they are more resistant to wear, corrosion and temperature than steel ball bearings. Therefore, Silicon Nitride Ceramic Ball bearings are especially suitable for high load, high-speed and high-friction applications that require high wear resistance, high corrosion resistance and high temperature resistance, such as automotive and petrochemical fields, and aerospace applications.
