
High Temp/Temperature and Corrosion Resistant Si3n4 Full Ceramic Bearing
Si3N4 Ceramics is a new type of non-metallic ceramic material. It is characterized by high strength at room temperature and high temperature, and the strength of Si3N4 can be maintained at 1200 ℃.
In the pursuit of quality, our company's products have won unanimous praise from customers at home and abroad, and is in a leading position in the industry of nano ceramic beads heat limit, ceramic heat sink cooling pad, heat resistant ceramic beads. We focus on technological innovation, continue to increase investment in research and development, strengthen platform construction, and attach great importance to the construction of technology research and development centers. We provide you with high-quality products and services with excellent technology and equipment, advanced design concept, professional production process, customer-oriented service consciousness and competitive cost advantage. We always maintain a progressive mindset, a process of continuous exploration, practice and innovation, a road of "drilling" and "specialization", which is the standard of behavior.
Product Description
Si3N4 Ceramics is a new type of non-metallic ceramic material. One of the popular product of Si3N4 ceramics is Si3N4 tube. The tubes are mainly used in conjunction with thermocouples to protect them. It allows the thermocouple to operate properly in special environments and to resist high pressures and high flow rates.
Process Method
It uses silicon powder as raw material and is first made into the desired shape using the usual molding method. Initial nitriding is done in nitrogen at 1200°C, so that part of the silicon powder reacts with nitrogen to form silicon nitride. This way the whole body already has some strength. It is then nitrided a second time in a high-temperature furnace at 1350°C to 1450°C to react with the silicon nitride.
Specifications
Thermocouple protection tube: diameter Φ12-80mm, length 600-1800m

Data Sheet
Items | Data |
Sintering method | gas pressure sinter |
Density | >3.2g/cm3 |
Si3N4 content | >92% |
Flexural strength | >750Mpa |
Compressive strength | >1500Mpa |
Thermal conductivity (W/mk) | >22 |
Porosity | 0 |
Thermal expansion coeff. (RT-1000℃) | 3.2 |
Max temperature in air | 1400℃ |
Hardness (HRA) | >92 |
Q&A
1. How long is the service time of Si3N4 ceramics?
It will be different as per your application. The general period is 25-30days.
2. What is the payment terms?
Our payment terms are T/T, L/C or as per your request.
In line with the business philosophy of 'innovation, learning, quality and service', we have been providing a series of high-quality High Temp/Temperature and Corrosion Resistant Si3n4 Full Ceramic Bearing for domestic and foreign customers for many years. We build a high quality team and brand, create high quality work and life, and provide high quality products and services. We vigorously promote energy saving and emission reduction within the company, and the concept of improving efficiency has been integrated into the corporate culture.
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