Shenzhen, Guangdong, China
Member Since: 2019
Business Type: Manufacturer/Factory
Mullite ceramic refers to a ceramic whose main crystal phase is mullite. Mullite is the only stable binary compound in the Al2O3-SiO2 system. The composition can vary from 3Al2O3·2SiO2 to 2Al2O3·SiO2, that is, the Al2O3 content can fluctuate within the range of 71.8-77.3 wt%. 3Al2O·2SiO2 is the stoichiometric composition and content of mullite.
Mullite Ceramics properties:
The mechanical properties of the high-purity mullite ceramic sintered body are determined by the ratio of Al2O3/SiO2 and the microstructure, especially the mullite ceramics with an Al2O3 content of 68%. The flexural strength at 1300 °C is 570 MPa, and the fracture toughness Kic is up to 5.7MPa.Nm, which is 1.6 times higher than normal temperature. This temperature increase, strength and toughness not only do not attenuate but increase greatly. In addition to SiC, it is unique in the existing high-temperature ceramic materials, which is also high. Pure mullite ceramics are excellent properties as high temperature materials.
Although the mullite crystal is not a cubic crystal system, it is only an orthorhombic system, but due to the small birefringence of light (only 0.012), a ceramic material having a certain transparency can be obtained under certain conditions. High-purity ultrafine powder prepared by alkoxide hydrolysis method, transparent mullite porcelain can be obtained by vacuum sintering at 1750 °C.
|Raw material||/||Alumina, silicon oxide|
|Vickers Hardness (Load 500g)||Gpa(Kg/mm²)||11.5(1175)|
|Modulus of Elasticity(25°C)||Gpa||65|
|Thermal Expansion Coefficient||10-7/ºC||5.5|
|Thermal Shock Resistance||△T°C||200|
|Maximum Use Temperature||°C||1200|
|Volume Resistivity(20°C)||Ω.cm||1×1019 1×1015|
Shenzhen Hard Precision Ceramic CO.,Ltd founded in 2007, located in Shenzhen of China.
We are a company that integrates development, design, molding, sintering, production and sales of precision ceramic products. After 10 years of development, we have cooperated with more than 2000 customers and 60 universities; Our factory covers an area of 2000 square meters, 50 employees, and annual production value of nearly 20 million. We have a higher visibility and better reputation in the same industry.Our products include ceramic rods, tubes, plates, blocks and precision parts for industrial. We have all-line high precision equipments from ceramic forming, sintering to precision machining. Hope for a wide range of sincere cooperation with customers at home and abroad.
Why Choose Us?
1.12 years of professional production industrial ceramics factory
2.High quality products with low price
3.High precision parts with lowest tolerance
4.Show time for production
5.Has a group of experienced, professional and efficient R&D team
6.Has a good reputation in China and abroad.
7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
Packaging & Shipping
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.