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...
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Silicon Nitride (Si3N4) is 60% lighter than steel but strong enough to survive some of the most demanding applications in a variety of industries. This lightweight, high-strength ceramic material is used as an alternative to stainless steel, super alloys, tungsten carbides and first-generation ceramics such as Al2O3 and ZrO2. It offers excellent thermal shock resistance and high fracture toughness, compatibility with nonferrous metal melts, and improved structural reliability compared to other ceramic materials. Silicon Nitride (Si3N4) Characteristics: 1. Good thermal shock resistance 2. Creep resistance 3. Low density 4. High fracture toughness 5. High hardness and wear resistance 6. Electrical resistivity
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The protective tube of silicon nitride material has high thermal conductivity, high temperature resistance, corrosion resistance,non-wetting with molten metal, and electrical insulation, making it the best choice for heating body protection tubes. The advantage of the immersion holding furnace is very obvious, and in order to achieve the immersion of the heating element into the molten metal, it is necessary to have a protective tube which can protect the heating element well. Silicon Nitride (Si3N4) Characteristics: 1 Good thermal shock resistance 2 Creep resistance 3 Low density 4 High fracture toughness 5 High hardness and wear resistance 6 Electrical resistivity
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Silicon Nitride Ceramic Ball is made of the hot isostatic pressing and sintering furnace and has the properties including high strength,high wear resistance,high temperature,corrosion,acid and alkali resistant,long-term using in the sea,good electrical insulating ect. The precision Si3N4 Ceramic Ball of Innnovacera produce is widely used in a a variety of high-precision, high-speed / ultra-high-speed bearings, vacuumbearing, high / low temperature bearing, non-magnetic bearing.It is also as the measurement ball used in chemical valve,high temperature valve,meter valve ect.The field of the application involve chemical, metallurgical, medical, food, oil, electronics,aerospace,ect. Silicon Nitride (Si3N4) Characteristics: 1 Good thermal shock resistance 2 Creep resistance 3 Low density 4 High fracture toughness 5 High hardness and wear resistance 6 Electrical resistivity
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Silicon Nitride Ceramic Balls are widely used on bearings with extreme performance requirements, such as: High-speed bearings, high precision bearings, vacuum bearing, high / low-temperature bearing, non-magnetic bearing, high precision ball screw; it is also used as valve ball, measuring ball for the chemical pump, heat pumps, metering pumps. Its excellent properties including: Good corrosion resistance withstands attacks from harsh chemicals and environments. High-Temperature Hardness is twice that of steel, Silicon nitride ceramic balls retain their strength and hardness up to 1800 degrees F.Lightweight, silicon nitride ceramic balls’ density is 3.20g/cm3 and weighs 45% less than steel which reduces centrifugal force, skidding and wear under high speed and acceleration, so greatly extending the service life. Superior Surface Finish is conducive to improving working speed and reach higher accuracy.
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