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Silicon nitride ceramics this "pearl" more bright dazzling

Release time:

2022-08-12

Source:

With the progress of society and the rapid development of science and technology, the use of bearings in more and more diversified environments and conditions, the structure of bearings, materials and performance requirements are also higher and higher. With the continuous breakthroughs and innovations in applied materials science, silicon nitride ceramic ball bearings came into being.

Speaking of which, many people have questions: ceramic this brittle and fragile things how can be used for bearings? Generally are not metal steel? In fact, silicon nitride ceramics is a synthetic high-purity silicon nitride powder prepared by high-temperature and high-pressure new advanced ceramic materials, one-third of the weight of steel, hardness is second only to diamond, compared with other materials, has a low density, high strength, high temperature, corrosion resistance, long life, self-lubricating, high hardness, high toughness, non-magnetic insulation, and so on, many excellent performance, is the best overall performance of the structural ceramics, known as the "all-purpose ceramics". "All-round ceramics, black ceramic steel, advanced ceramic materials, the crown of the pearl.

Aviation, aerospace, navigation, nuclear industry, petrochemical, medical equipment, textile industry, metallurgy, electric power, food, transportation, high-speed machine tools and other fields need to work in high temperature, high speed, deep cold, flammable, explosive, strong corrosion, vacuum, electrical insulation, non-magnetic, dry friction, and other special conditions, silicon nitride ceramics, this material can not only withstand the harsh working environment of the metal and polymer materials are difficult to cope with, but also With all the important characteristics required by the bearing material, therefore, although silicon nitride ceramics in ceramics is not the hardest, toughness is not the highest, but it has a comprehensive mechanical and physical properties are considered to be the best. Nowadays, this kind of advanced ceramic materials used in bearing manufacturing, has become the world's high and new technology development and application of hot spots, and become a symbol of the materials technology revolution in the machinery industry.