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Silicon nitride is one of the hardest ceramics but also one of the most resistant. Si3N4 is mainly used in severe environments which combine extreme temperatures with abrasive and/or corrosive medium. Silicon nitride can be of different grades : sintered, hot pressed or reaction bonded. Selection of materials Microcertec offers two high-purity Si3N4 grades that are particularly suited for hostile environments : sintered silicon nitride hot pressed silicon nitride Both Si3N4 materials are mainly designed to be used in thermal-mechanical or corrosion-resistance applications because they show an outstanding behaviour to resist to wear, thermal shocks and corrosion (liquids and gases). Moreover, these pure Si3N4 grades offer a low thermal expansion. Properties Sintered silicon nitride and HP Si3N4 have the following properties : low density excellent thermal shock resistance excellent wear resistance excellent corrosion resistance (liquids and gas) low coefficient of thermal...

en acier spécial, trempé,poli avec manche moleté. Tous nos triboulets sont réputés pour leur grande dureté et leur grain de surface très lisse.