Silicon Nitride Ceramic Structural Parts Ceramic Ring Has Good
Electrical Insulation
Product Overview
Silicon nitride ceramic is an inorganic material ceramic that does
not shrink during sintering. Silicon nitride has high strength,
especially hot-pressed silicon nitride, which is one of the hardest
substances in the world. With high strength, low density, high
temperature resistance and other properties.
The product has the advantages of high density and uniformity,
excellent thermal shock resistance, corrosion resistance, high
temperature resistance, pollution-free, high insulation, and is not
affected by a reducing atmosphere. It has a long service life and
is especially suitable for harsh conditions such as hydrogen
reduction furnaces. Electrode protection. Can be processed
according to customer demand specifications.
Product parameter table
| Colour | dark grey |
| Density (g/cm3) | ＞3.2 |
| Relative density | 99% |
| Hardness (HV) | 14-16 |
| Fracture toughness (MPa•m1/2) | 6-7 |
| Normal temperature flexural strength (MPa) | 600-800 |
| Coefficient of expansion (μm/K) | 20-400℃ | 3.2 |
| 400-1000℃ | 4.3 |
| Dielectric strength (KV/mm) | ＞13 |
Resistivity
(Ω·cm) | 20℃ | ＞1014 |
| 500℃ | ＞1011 |
| Thermal conductivity (W•(m•K)-1) | 15-22 |
| Acid and alkali corrosion resistance | excellent |
| Thermal shock resistance ΔT℃ | 1300 |
| Maximum operating temperature | 1600 |
| Apparent porosity% | 0 |
Product features
Product features: high temperature and high strength, good thermal
shock stability, good fatigue toughness, high fatigue willfulness,
high room temperature bending strength, wear resistance, oxidation
resistance and corrosion resistance.
Applications
This product has been widely used in polysilicon reduction
furnaces, military manufacturing, aviation, and power.
Silicon nitride ceramic is an advanced structural ceramic material
with unique high strength, high hardness, wear resistance,
corrosion resistance, high temperature resistance, good oxidation
resistance, thermal shock resistance, mechanical shock resistance
and small thermal expansion coefficient. Low friction coefficient,
anti-magnetic, electrical insulation, small specific gravity and
other excellent properties, considered by the material science
community as the excellent comprehensive performance in the field
of structural ceramics, the most promising alternative to
nickel-based alloys in the high-tech, high-temperature field is
widely used high technology New material content.
Main application areas:
1) Machinery industry: Silicon nitride ceramic shaft balls can be
widely used in the electric spindle of high-speed machine tools,
bearings of wind turbines, and high temperature and corrosion
resistance fields;
2) Metallurgical industry: due to the non-wetting nature of silicon
nitride ceramics and aluminum liquid, silicon nitride ceramic parts
are widely used in aluminum smelting and casting, such as
protection tubes, riser tubes, hooks, etc.; silicon nitride ceramic
resistance The water ring can be applied to non-destructive flaw
detection units for seamless steel tubes; silicon nitride
metallurgical rolls can be used for steel production;
3) Petroleum industry; can be used for petroleum exploration, etc.;
4) The field of high temperature wear resistance and corrosion
resistance; silicon nitride ceramic positioning blocks can be used
in the production of titanium sponge; silicon nitride ceramic
inserts are used in the high temperature reflux area of
supercritical industrial boiler swirl burners;
5) In the field of wave-transmitting materials; due to its
excellent wave-transmitting properties, silicon nitride ceramic
plates can be applied to the roof of microwave ovens, the detection
windows of level gauges, etc.;
6) Auto parts: such as rocker inserts, turbine rotors, cam tappets,
etc.
Product Picture
High temperature resistance. At 1200 ℃, the strength and hardness
are almost unchanged. It can be used in a high temperature
environment. It will not melt under high temperature and will not
decompose until 1900 ℃.
.
Product packaging
Packed in carton
FAQ
1. Are you a businessman or a manufacturer?
We are a company, we have our own factory
2. How long is your delivery time?
Negotiable
3. Can the product be customized?
Can be customized
4. What is the product packaging?
Carton or according to customer requirements
