Features and applications of silicon carbide ceramic products
一，What is silicon carbide ceramic products?
Silicon carbide ceramic products is mainly made from silicon carbide,with excellent high temperature strength,corrosion resistance,wera resistance and thermal conductivity.It is one of the high-performance ceramic material currently widely used in industy.
二：What properties of silicon carbide makes it play in important role in ceramic products?
1.High temperature chemical stability:silicon carbide has high melting point and excellent high temperature resistance,which makes it is able to maintain stable physical and chemical properties in high temperature environments.
2.High hardness:silicon carbide has extremelly high hardness,just lower than diamond,which makes it work well in cutting and grindig fields.About mohs hardness,diamond is about 10.0,green silicon carbide is 9.4-9.5,and black silicon carbide is 9.2-9.3.
3.Good corrosion resistance:silicon carbide does not react with strong acid and stong base,and can be used steadily for a long time in complex temperature and chemical environment.
4.Perfect thermal conductivity:silicon carbide has higher thermal conductivity,which is about 60-200 W/MK at room temperature.then it can transfer heat effectively.
5.Lower coefficient of thermal expansion:silicon carbide’s coefficient of thermal expansion is 9-4.5 x10-6/ ℃,then the refractory product and ceramics made from silicon carbide is not prone to creep or deformation.
6.Excellent insulation performance:silicon carbide possesses higher insulation performance,and can work well in high temperature and high electric field.
7.Lower volume density:silicon carbide’s volume density is 3.2g/cm3,lower than most metal and corundum(white corundum,brown corundum,pink corundum and etc,all is about 3.9g/cm3)
8.Brittleness and toughness:although silicon carbide has high hardness and brittleness,but its toughness is not very good.Black silicon carbide has better toughness than green silicon carbide.
三.Kinds of silicon carbide ceramic products
Silicon carbide is used for making all kinds of ceramic products,such as ceramic seals,ceramic bearings,ceramic pipes,ceramic nozzles etc,also used to manufacture foamed cearmics,metallurgical silicon carbide ceramic filter membranes, diesel particulate filter ceramic membranes,bulletproof ceramic plates, silicon carbide-boron carbide composite ceramics and other industrial ceramics.
四：Applications of silicon carbide ceramic products
Silicon carbide ceramic products are irreplaceable important material in automotive,machinery,aviation,chemical,electronics and other fields on base of silicon carbide’s performance.Besides, silicon carbide ceramic products also are used in automobile brake discs, bearings, mechanical seals, nozzles, engine parts, pyrolysis furnace parts and other fields.
五、Market prospects of silicon carbide ceramic products
The performance requirements of silicon carbide ceramic products in the fields of new energy vehicles, smart city construction, industrial automation, etc. are getting higher and higher, and the market demand is also expanding. According to research reports, the market size of silicon carbide ceramic products will continue to grow in the next few years.