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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 ℃.
We embrace cutting-edge technology, based on quality, professional technology to provide customers with better Ceramic Fiber, 1 8 ceramic fiber paper, ceramic membrane tube. We have introduced a number of German high-precision parts composite machining centers to form key production equipment for parts processing, breaking the foreign technology monopoly, and comprehensively improving the overall process level, manufacturing technology and production capacity. We are doing business through a combination of point-to-point and point-to-surface approaches, and achieve the development idea of implementing key breakthroughs. People-oriented is our characteristic and also the purpose of value creation that we have always upheld.
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.
Our company's Stainless Steel Dental Drill Bearing Sr2-5tlzwn High Speed Medical Handpiece Dental ... not only have short response time, but also have high data update rate and data stability. Since its establishment, the company has strictly abided by the principles of equality and mutual benefit, contract compliance and standardized operation. Perseverance is the requirement of our staff's will quality, our employees not only need ambition, but also the quality of perseverance and perseverance.
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