alumina Zirconia Ceramic Tube keramikschaft keramikrohr
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Alumina Ceramic:
Aluminium oxide, chemical formula Al2O3. It is a high hardness compound with a melting point of 2054 ° C and a boiling point of 2980 ° C. Ionized ionic crystals at high temperatures are commonly used in the manufacture of refractory materials.
Industrial alumina is prepared from bauxite (Al2O3·3H2O) and diaspore. For high purity Al2O3, it is generally prepared by chemical methods. Al2O3 has many isomorphous crystals, and there are currently more than 10 kinds of crystals, mainly three kinds of crystal forms, namely α-Al2O3, β-Al2O3, and γ-Al2O3. Among them, the structure has different properties, and is almost completely converted into α-Al2O3 at a high temperature of 1300 ° C or higher. Alumina is a stable oxide of aluminum with the chemical formula Al2O3. It is also known as bauxite in mining, ceramics and materials science.
Properties: white solid which is insoluble in water, odorless, tasteless, extremely hard, easy to absorb moisture without deliquescence (burning non-hygroscopic). Alumina is a typical amphoteric oxide. (Corundum is the most densely packed hexagonal form, is an inert compound, insoluble in acid and alkali corrosion resistance ), soluble in inorganic acids and alkaline solutions, almost insoluble in water. And a non-polar organic solvent; relative density (d204) 4.0; melting point 2050 ° C.
Storage: Sealed and stored dry.
Uses: used as analytical reagents, dehydration of organic solvents, adsorbents, organic reaction catalysts, abrasives, polishing agents, raw materials for smelting aluminum, refractory materials.
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
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