
Insulating Si3n4 Ceramic Cylinder Wear Liner
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 ℃.
Our goal is to become the national top manufacturer of high temperature ceramic bushings, ceramic pipes company, water heater element, and to become one of the top ranking producers in the international market. All of our employees are striving hard, pioneering and innovative, and our comprehensive strength is constantly increasing. We provide opportunities for our employees to shape their career competitiveness and achieve continuous self-achievement. We have been committed to the field of outdoor lighting for a long time, with solid technology and quality constantly innovating. With the progress of internationalization and globalization, we are constantly improving our strategic layout.
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.
The company specializes in the production and research and development of Insulating Si3n4 Ceramic Cylinder Wear Liner, with rich precision technology, complete process equipment and testing experience. We constantly improve the efficiency and quality of our work to achieve twice the result with half the effort. We always keep in mind the principle of safety first, and integrate ensuring safety into every aspect of production and operation.
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