
High Wear Resistant Polished Custom Silicon Nitride Pipe Si3n4 Ceramic Sleeve
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 field of our monograph, to provide customers with more cost-effective ball milling media high density alumina ceramic media, alumina ceramic tiles china, electric heating pad coil is our goal. With the continuous improvement of the comprehensive competitiveness of enterprises, the development space has also been successfully expanded. In order to keep our promise to our customers, we have set up a special service monitoring hotline to analyze and give feedback to our customers' good suggestions and requirements in order to improve the quality of our services.
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.
We always pay attention to the market trend, constantly develop new High Wear Resistant Polished Custom Silicon Nitride Pipe Si3n4 Ceramic Sleeve to meet the needs of customers, pay attention to product quality and improve customer satisfaction. We will continue to uphold the customer-oriented purpose, to provide customers with higher quality, more competitive price products and better services. We always put the core values of "integrity, pragmatism, growth, innovation and win-win" into our sales and service.
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