Stable Thermal Shock Resistance Silicon Nitride Ceramic Si3n4 Heat Shield Cover

Silicon nitride ceramic protection tube is used in conjunction with the thermocouple to protect the thermocouple, so that the thermocouple can work normally in a special environment, and it can resist high pressure and high flow rate.

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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

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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.

It is our solemn commitment to our customers to provide consistently high quality Stable Thermal Shock Resistance Silicon Nitride Ceramic Si3n4 Heat Shield Cover and services. We strive to create a "learning organization" to promote enterprise development and achieve personal value. The establishment of a streamlined and efficient, fair and competitive, upwardly mobile incentive mechanism is the goal our company pursues.

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