custom made alumina Zirconia Ceramic Tube shaft eyelet
Reputation depends on quality, quality comes from Hard!
Alumina Ceramic:
Alumina contains the elements aluminum and oxygen. If the bauxite raw material is chemically treated to remove oxides of silicon, iron, titanium, etc., the product obtained is a high purity alumina raw material, and the Al2O3 content is generally above 99%. The mineral phase consists of 40% to 76% γ-Al2O3 and 24% to 60% α-Al2O3. γ-Al2O3 can be converted to α-Al2O3 at 950-1200 °C, and significant volume shrinkage occurs at the same time. There are many variants of Al2O3, the common ones are α, and the γ forms are all white crystals.
The corundum in nature is the most densely packed α-shaped hexagon, with melting point, high hardness, insoluble in acid and alkali, corrosion resistance and good insulation.
The aluminum hydroxide and the aluminum hydroxide or aluminum ammonium lanthanum are co-heated at 723K to obtain a γ-shape, which is insoluble in water, but has strong water absorption, strong adsorption capacity and catalytic activity.
The beta shape has ion conductivity and allows Na+ to pass. The data shows that China is the world's largest alumina producer. In 2010, global alumina production was 565.35 million tons, and China's alumina output reached 28.95 million tons, up 20.14% year-on-year, accounting for 51.38% of the global total. In 2010, the apparent consumption of alumina in China reached 33.21 million tons, with an annual growth rate of 14.05%, a net import of 4.26 million tons, a bauxite import of 30.19 million tons, and an external dependence of 39.71%. Up to 27.26%.
properties: High hardness, high strength, wear resistance, corrosion resistance, high temperacture (1600°), good thermal diffusivity, good insulativity, low cost etc.
Data Sheet↓
Color: White/Ivory Density: 3.9g/cm3 Alumina Content: 96% 99% 99.5% Gas permeability: 0 Water Absorption: 0 MONS' Hardness: 82 Vickers Hardness (Hv50): 15.7(1600) Gpa(Kg/mm²) Flexural Strength(20°C): 330Mpa Compressive Strength(20°C): 2000Mpa Fracture Toughness (20°C): 4 MPam1/2 Thermal Conductivity(20°C): 27.5W(m.K) Thermal Expansion Coefficient: 7.6 10-6/°C Thermal Shock Resistance: 200 △T°C
Maximum use temperature 1650°C
Dielectric Strength: ＞10 KV/mm
Dielectric Constant: 9.1er
Dielectric Loss Angle(1MHz): 0.0002-0.0003
Volume Resistivity(20°C): ＞1014Ω.cm
Application industry: Machinery, electronic, chemical, petroleum etc. Specific application: Electrical ceramic substrate, plunger, sealing ring etc.
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.Short 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
Products Show
FAQ
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.
