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As an excellent high-temperature engineering material, Si3N4 ceramic material can give full play to its advantages in its application in the high-temperature field. It is extremely resistant to high temperatures, and its strength can be maintained to a high temperature of 1200°C without dropping. It will not melt into a melt after being heated, and will not decompose until 1900°C. It has amazing chemical resistance and can withstand almost all inorganic acids. And caustic soda solution below 30%, it can also resist the corrosion of many organic acids; at the same time it is a high-performance electrical insulating material. Silicon nitride has almost no effect with water; it is slowly hydrolyzed in a strong acid solution to form ammonium salt and silicon dioxide; it is easily soluble in hydrofluoric acid and does not work with dilute acid. The strong alkali solution can slowly corrode silicon nitride, and the molten alkali can quickly transform silicon nitride into silicate and ammonia.
These properties of silicon nitride materials are comparable to those of superalloys. However, as a high-temperature structural material, it also has the disadvantages of low mechanical impact resistance and brittle fracture. For this reason, it is widely used in the research of using silicon nitride to make complex materials, especially silicon nitride combined with silicon carbide, and using whiskers and adding other compounds to toughen silicon nitride ceramics.
Remark:
We supply a broad range of silicon nitride ceramic parts, including ceramic substrate, ceramic tubes, ceramic shaft, ceramic rod, ceramic bearing, ceramic nozzles and so on.
General
Properties
Unit
Value
Mechanical
Volume Density
g/cm3
≥3.22
Color
Black gray
Compressive Strength
MPa
≥2500
Bending Strength
MPa
600
Elastic Modulus
MPa
300
Fracture toughness
Mpam1/2
7
Thermal
Max. service temperature (Non-loading)
℃
1300
Thermal Conductivity (25℃)
W/m.k
≥70
Coefficient of Thermal Expansion (CTE)
1*10-6 m/k
3.1
Specific heat
1 x 103J/(kg·K)
0.5
Electrical
Volume Resistivity (25℃)
ohm.cm
-
Insulation Breakdown
KV/mm
-
Dielectric constant (1Mhz)
（E)
6
1. Support customized prototyping and R&D needs
2. High Precision CNC Machining Workshop
3. Customized capability from small size to big-size
Remark:
We have own in-house comprehensive types of manufacturing equipment, including forming machines,
vacuum sintering furnace, High precision machining equipment, polishing machines, metalizing production lines.
1. High Precision Inspection Tools
2. OQC Inspection Workshop
Remark:
1. We have complete and rigorous quality-control system, including IQC, IPQC, QA and OQC per ISO9001.
2. We also have professional quality assurance team and precision inspection equipments for quality-control.
FAQs (Frequently Asked Questions)
Q1:Is it available to provide customized products?
A: We always support custom-made demand as per different dimensions, design and surface treatment.
Q2. When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of get the price,
please call us or tell us in your email so that we will proceed your inquiry as priority.
Q3. How long can I expect to get the sample?
A: After you pay the sample charge and send us the confirmed files, the samples will be ready for delivery in 4 weeks.
Q4:How long does the whole procedure being worked out?
A: After you place an order, the manufacturing time is about 25 working days.
Q5. Are you a factory or trading company?
A: We are a professional manufacturer. You are welcome to visit our factory.
Q 6: What other products are you dealing with?
A: We not only produce silicon nitride ceramics, but also manufacture alumina Metallized Ceramics, Boron Nitride Ceramics and zirconia ceramic components.
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