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Silicon nitride crucible
Silicon nitride crucible (alias: Laboratory Melting Crucible) is designed for laboratory and high temperature industrial applications for
conducting melting and chemical experiments. The excellent physical and thermal properties of silicon nitride (Si3N4) make it ideal for
handling high-temperature materials.
Advantages of silicon nitride crucible products:
High temperature resistance: The silicon nitride material can withstand temperatures up to 1200°C, and its high thermal stability and heat
resistance ensure reliable use in extreme conditions.
Corrosion resistance: Silicon nitride has extremely high corrosion resistance to a variety of chemicals and is suitable for handling a variety of
chemical reactions, including acidic and alkaline substances.
Thermal shock stability: It has extremely high thermal shock stability (△T℃ 500) and can withstand rapid temperature changes without
cracking or damage.
Structural design: Crucibles are usually designed with center holes and other shapes to adapt to specific assembly requirements, increase
versatility and improve experimental flexibility.
Physical strength: High bending strength (600 Mpa) and compression strength (2500 Mpa) ensure shape and function under physical load.
Silicon nitride crucible performance indicators :
Performance | Ⅰ | Ⅱ | Ⅲ | ||
Density/(g/cm³) | 3.15≤ρ≤3.25 | ||||
Elastic modulus/GPa | 270≤E≤330 | ||||
Poisson's ratio | 0.23≤μ≤0.29 | ||||
Coefficient of thermal expansion (room temperature to 500℃)/X10-6/℃ | 2.0≤α≤3.7 | ||||
Bending strength/MPa | Four-point test | ≥750 | ≥650 | ≥530 | |
Three-point test | ≥820 | ≥720 | ≥550 | ||
Vickers hardness（HV） | ≥1420 | ≥1330 | ≥1270 | ||
Fracture toughness | ≥6 | ≥5 | ≥5 | ||
Crushing load ratio | 40% | 35% | 30% | ||
microcosmic structure | Air hole/μm | ≤10 | ≤10 | ≤25 | |
Inclusion | 25<S≤50 | ≤4 | ≤8 | ≤16 | |
50<S≤100 | ≤1 | ≤2 | ≤4 | ||
100<S≤200 | 0 | ≤1 | ≤25 | ||
S>200 | 0 | 0 | ≤1 | ||
Ceramic product processing accuracy :
Item | Precision value | ||||
Dimensional exact values | Up to 0.001mm | ||||
Degree of finish | Up to mirror | ||||
The number of concentricities | Up to 0.003mm | ||||
The number of parallelism | Up to 0.002mm | ||||
Bore tolerance | The minimum can be machined 0.005mm | ||||
Straight groove | The narrowest machined groove is 0.1*100mm | ||||
Thickness dimension | Minimum machining to 0.08mm | ||||
Screw thread | Min machining inner thread M2, outer thread no limited | ||||
Cylindricity dimension | Up to 0.004mm | ||||
Linear tolerance | Up to 0.001mm | ||||
Min aperture | The minimum processing capacity is 0.07mm |
Silicon nitride crucible application area:
Laboratory research
Widely used in chemistry and physics laboratories in universities and research institutions to conduct high-temperature chemical analysis and material science experiments.
Industrial smelting
Used to melt metals and other high-melting materials in the metalworking and ceramic manufacturing industries.
High temperature furnace applications
used as a melting vessel in high temperature furnaces to handle the melting of such as glass or special alloys.
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Jiangxi Silicon Nitride New Material Co., LTD  Building 19, Phase 4, Electronic Information Industrial Park, Hedong Industrial Park, Nancheng County, Fuzhou City, Jiangxi Province
19194976688 16679068073 sales@sixny.com.cn |
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