97 Alumina Ceramic - Alumina Ceramic Parameter

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97 Alumina ceramic

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97 Alumina Ceramics Performance
97% Alumina Ceramic is a white solid, a compound of aluminum and oxygen, and its formula is Al2O3. It is also known as bauxite in mining, pottery and materials science.The common purity is 97% Alumina Ceramic .Insoluble in water, white solid, odorless, tasteless, very hard, easy to absorb moisture but not deliquescence (burnt do not absorb moisture).Amphoteric oxides, soluble in inorganic acids and alkaline solutions, almost insoluble in water and non-polar organic solvents;Relative density (d204) 4.0;Melting point is 2050 ℃.

97% Alumina Ceramic application field:

1) High-strength, high-temperature stability: decorative porcelain, nozzle, rocket, missile shroud;

2) High hardness and high wear resistance: cutting tools, molds, abrasives, bearings, artificial gemstones;

3) Low dielectric loss, high resistivity, high insulation: spark plug, circuit substrate, tube holder;

4) High melting point and corrosion resistance: refractory materials, crucibles, furnace tubes, thermocouple protection sleeves, etc.;

5) Ionic conductivity: solar cell materials and battery materials.

6) Biocompatibility: can also be used to make artificial bones and artificial joints, etc.

Item	Unit	Parameter
Al2O3 Alumina Ceramic	%	97
Al2O3 crystal grain size	μm	0.8
Bulk Density	≥g/cm3	1.12-1.14
Moisture	%	0.3
Particle size distribution	Accounts	60--200
Porcelain density	≥g/cm3	3.80--3.82
Average shrinkage	%	17--19
Firing temperature	℃	1630
Holding time	H	3
Loss on ignition	%	< 5
Porcelain color		white

Properties of Alumina/Aluminum Oxide (Al2O3)
1.Very good electrical insulation (1x1014 to 1x1015 Ωcm)
2.Moderate to extremely high mechanical strength (300 to 630 MPa)
3.Very high compressive strength (2,000 to 4,000 MPa)
4.High hardness (15 to 19 GPa)
5.Moderate thermal conductivity (20 to 30 W/mK)
6.High corrosion and wear resistance
7.Good gliding properties
8.Low density (3.75 to 3.9 g/cm3)
9.Operating temperature without mechanical load 1,000 to 1,500°C.
10.Bioinert and food compatible

Products and Aplications 97% Alumina Ceramic
– Pieces, Plates, Boards, Trays, etc. in Alumina-Ceramic / Cordierite-Mullite
– Tubes, Rods, Rollers, Supports, etc. in Alumina-Ceramic / Cordierite-Mullite
– Protection, Thermocouples, Insulation, etc. in Alumina-Ceramic / Cordierite-Mullite
– Pieces, Plates, Tubes, Rods, Rollers, etc. in Zirconium Oxide
– others

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