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Silicon Nitride Thermocouple Protection Tube

Silicon Nitride Thermocouple Protection Tube Introduction Gas pressure sintered silicon nitride (GPSSN) is a sintering processing at high temperature after isostatic pressing of silicon nitride powder with other additives. The nitrogen pressure (<20mpa) during sintering could restrain the...

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Silicon Nitride Thermocouple Protection Tube Introduction 

Gas pressure sintered silicon nitride (GPSSN) is a sintering processing at high temperature after isostatic pressing of silicon nitride powder with other additives. The nitrogen pressure (<20mpa) during sintering could restrain the dissociation of si3n4 and get the full sintering at high temperature, which make the silicon nitride products to highest density and lowest porosity.                                              image001.jpg 

Charcteristics of silicon nitride riser tube

Item

Material

Unit

Silicon Nitride

Bulk density

g/cm3

3.2

Water absorption

%

0

Flexural strength

MPa

750

Young's Modulus of Elasticity

Gpa

280

Fracture Toughness

MPa・m 1/2

6.5

Poisson's Ratio

_

0.28

Vickers Hardness

Gpa

13

Coefficient of Linear Thermal Expansion

×10-6/℃

3.4

Thermal Conductivity

W/(m・k)

30

Specific Heat

J/(g・k)

0.65

Volume Resistivity

Ω・cm

>1014

Heat Shock Resistance

800

Maximum Available Temperature

1200

Product Advantages 

1. Moulding: Cold isostatic pressing(CIP)

2. Sintering: GPSN/RSSN

3. High strength and good compactness

4. Low thermal expansion coefficient

5. Excellent thermal shock resistance

6. No wetting by molten aluminum and non-ferrous metal

7. Good corrosion resistance

image002.jpg

OUR SERVICE

1.We provide free technical service about our products and application issues.

2.Free on-site touring and introduction of our factory.

3.We provide process design and validation for free.

4.We can guarantee on-time delivery of samples and goods.

5.Close follow-up of all orders by special person and keep customers informed timely.

6.All after-sale request will be responded in 24 hours.


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