
Full or Hybrid Ceramic Ball Bearings Si3n4 Zro2 688
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 constantly promote technological innovation to provide customers with healthy, safe, energy-saving and environmentally friendly rear ceramic brake pad heating up during highway driving, ceramic tube price, high temperature ceramic bushings of the highest quality, and win trust and reputation through convenient and efficient customer service. We insist on brand building because we believe that what a brand creates is not only a product, but also a company culture. Our company has always implemented the 'integrity-based' management philosophy, with high-quality products, reasonable prices, good service by the majority of users. In line with the quality policy of 'striving for quality, excellent service', we give full play to our strong R&D advantages to provide customers with excellent products and better services. The company has won the recognition of customers with reliable product quality and good service, thereby further enhancing the quality of products and services and corporate image.
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 believe that only with excellent product quality of our Full or Hybrid Ceramic Ball Bearings Si3n4 Zro2 688 can we gain a long foothold in the market competition. Self-confidence makes us more confident in this environment where competition and development coexist, and opportunities and challenges coexist, and hard work makes us learn to be down-to-earth and relentless in pursuit. We establish the balanced development of the company and society as our own development strategy, and pay attention to balancing the interests of all parties and gradually improving and enhancing the company's social performance.
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