China Black Silicon Nitride Ceramic Ball

1. Description:

Reaction bonded silicon nitride is made by direct nitridation of a compacted silicon powder, and because of the difficulty of ensuring complete reaction; it is hard to achieve a high component density.
Usual densities are in the range 2.3 - 2.5g/cm3 compared with 3.29g/cm3 for gas pressured sintered silicon nitride.
The higher density gives the HPSN, SSN & GPS-SSN materials better physical properties and means they are used in more demanding applications at very high temperature, especially for non-ferrous molten metal handling and thermocouple sheaths. The nitridation produces only a small volume change, which means that RBSN components do not need to be machined after fabrication and complex near net shapes can be produced in a single process stage.


2. Features:

a. high temperature strength
b. superior thermal shock resistance
c. excellent wear resistance
d. good fracture toughness
e. mechanical fatigue and creep resistance
f. Excellent non-wetting property with good oxidation resistance


3. Technical data:

PropertySSN GPS-SSNHPSN RBSNDensity (g.cm-3)3.283.303.23 2.5Young's Modulus (GPa)285 320 315 189Bend Strength (MPa)675 750 850 440Fracture Toughness K1c (MPa.m0.5)6 7 8 2.5Hardness (GPa)16 1616 7.2Thermal Expansion Coefficient (x 10-6/°C)3.23.2 3.2 3.2Thermal Conductivity (W/m.K)25 303014Maximum Temperature (°C) for application
Dielectric Constant
Abrasive Wear resistance Parameter11501150 11501100
99 97.5
11101130 1120 360

Packaging & Shipping
Packaged by polybay and bubble bag in the stardard export carton,
Every package can be offered with English installation instruction.
Company Information

Our company has a long history.We own the advanced equipment, a young, energetic, proficient and experienced team of professionals which with leading technology strength, excellent operational management and high-quality services what made us be recognized by customers of the chemical, petroleum, electric power, metallurgy, building material, aerospace, machinery and other industries.

HIGHBORN is one of the leading precise ceramic and quartz manufacturer in China.We own the advanced equipment, a young, energetic, proficient and experienced team of professionals which with leading technology strength, excellent operational management and high-quality services what made us be recognized by customers of the chemical, petroleum, electric power, metallurgy, building material, aerospace, machinery and other industries.

Certifications:
FAQ
Q: Are you trading company or manufacturer ?
A: We have our own company and factory
Q: Do you send a sample to check?
A: Sure,sample is free and a freight collect.
Q: Where is your main market?
A: We have been exported to USA, Korea, UK, France, Russia, Germany, India, Spain, Brazil etc, so far, there is about 90 countries we have been exported, we also get good reputation from our customers.
Q: What is your terms of payment ?
A: We mainly accept T/T, West Union, Credit card and L/C.
Paypal will be available in the near future.