MOQ | 10 kg |
Port | QingDao Port |
Packaging | 25kg/ bag 1ton/bag,or as your requirement. |
Lead Time | 10 days |
It is a high quality refractory material and widely used in
metallurgy, energy and chemical industries.As different binding
material, SIC's performance, working condition and life are all
different. Classified as follow,
1.Binding with clay
In silicon carbide refractories, clay is the most common, the
lowest price and the most simple process.At present, in China's
ceramic industry, clay is used in a large amount of silicon
carbide kiln. Aluminum, oxygen and silicon carbide in the clay
react in 1120 ~ 1150 ℃
The clay amount in the product is generally not more than 15%,
the fine powder in the ingredients should not be too much,
otherwise it is easy to oxidize.The content of silicon carbide is
between 50% and 93%.It is used to make saggar, padded and
NC-G.
2.Binding with SIO2
Add about 10% of SiO2 (micropowder and quartz powder) in silicon
carbide.The silicon carbide particles are oxidized to generate
SiO2 films and combine the silicon carbide particles during
sintering process.
Because its raw material purity is high, miscellaneous quality is
little.Can be used in the above 1200 ℃ high oxygen
atmosphere.Generally used for making ceiling boards and
supports.
3.Binding with mullite
Mullite (5% ~ 8%) and silicon carbide as raw material, pulp or
dextrin as binder, formed by 1380 ℃ after firing, the mullite
combined with silicon carbide is firmly
combined.
The product has good performance, thermal shock resistance and
good oxidation resistance compare with clay and SIO binding. At
present, the application of ceramic kiln.
4.Reaction and sintering
Add silicon metal powder and carbon in silicon carbide (graphite,
carbon black, etc.) at 1450 ℃ is buried carbon burning, silicon
powder and the carbon reaction type low temperature beta SiC,
combine the original silicon carbide particles.
Because the products generally contain free silicon 8% ~ 15% and
small amounts of free carbon, so use temperature below 1400 ℃.Its
thermal conductivity and impact resistance are good, but the
strength, hardness and corrosion resistance are
poor.
Reaction sintered silicon carbide products are almost invariable
before and after sintering, so they can be processed into any
shape and size, especially for large scale and complex
shapes.
5.Binding with silicon nitride
The high temperature performance of silicon nitride can be used
as the binding agent of silicon carbide products, and silicon
nitride and silicon carbide products are the latest high-tech
silicon carbide refractory materials.
Silicon nitride combined with silicon carbide products with good
physical and chemical properties, high temperature performance,
the use of temperature of 1500 ℃, the abrasive, metallurgy and
daily, electronic ceramics and other industries widely used.As a
kiln has broad prospects.
6.Bingding with Silicon oxynitride
Its properties are close to silicon nitride and silicon carbide
products, and its antioxidant properties are superior. The nitric
oxide silicon oxide distributed by the reaction is distributed
around the silicon carbide particles and binds it closely to make
the silicon carbide maintain excellent oxidation
resistance.