thermal shock resistant silicon nitride ceramic drawing die

thermal shock resistant silicon nitride ceramic drawing die

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Silicon Nitride Ceramic:

Sintered silicon nitride has a low thermal expansion coefficient of 2.53×10-6/°C and a thermal conductivity of 18.42 W/m·K, so it has excellent thermal shock resistance, second only to quartz and glass-ceramics. There are experimental reports that the reaction sintered silicon nitride sample with a density of 2500 kg/m3 is cooled from 1200 °C to 20 °C for thousands of cycles, and still does not break. The thermal stability of silicon nitride ceramics is good, and it can be in high temperature. long-term use. It can be used up to 1400 ° C in an oxidizing atmosphere and 1850 ° C in a neutral or reducing atmosphere. Silicon nitride has high mechanical strength. Generally, the flexural strength of hot-pressed products is 500-700 MPa, and the high can reach 1000-1200 MPa. The flexural strength after reaction sintering is 200 MPa, and the high can be 300-400 MPa. Although the room temperature strength of the reaction sintered product is not high, the strength does not decrease at a high temperature of 1200 to 1350 °C. The high temperature creep of silicon nitride is small. For example, the reaction-sintered silicon nitride has a load of 24 MPa at 1200 ° C, and its shape becomes 0.5 % after 1000 h.

properties:

High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.

Data Sheet↓

Application industry:

Machinery, electronic, semiconductor, chemical, petroleum, smelt.

Specific application:

Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.

7.MOQ is not limited, small quantity is welcome.

8.Vigorous team and good after-sales service

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