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[China]
Address: NO 21st ChuangXing Road, Shangsha community , Changan Town, Dongguan city Guangdong province, China
Contact name:Admin deng
Dongguan Ming Rui Ceramic Technology Co.,ltd |
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95% 99% Alumina Al2O3 Ceramic Disc / Cylinder / Disk / Alumina Ceramic Wafer
Tag: Alumina ceramic wafer Alumina ceramic cylinder
Large diameter Alumina Wafers
We are able to manufacture alumina wafers up to a maximum size of
φ300mm (φ12 inch).
With a high density and few pores, it is possible to form fine
circuit patterns.
We also handle substrates with fine rounded/square holes or slits,
as well as polished substrates.
1. Name: Alumina ceramic wafer
2. Size: as customers' drawing
3. Al2O3 Content: 95%/99% alumina
4. Color: white or ivory
5. Working Temperature: 1500-1700 degree
6. Feature: high mechanical strength, good insulation&high wear
resistant, etc.
7. Application: for refractory furnace or kiln, electron vacuum
decices, spaceflights, pharmaceutical engineerings or other
mechanical applications
A treatment process of alumina ceramic wafers comprises the following steps of (1) washing with distilled water: washing ceramic wafers with 100% pure water, and drying; (2) washing with acetone: soaking the washed ceramic wafers in 70-80% acetone, and drying; (3) alkali washing: soaking the ceramic wafers washed with the acetone in 10-20% sodium carbonate solution, and drying. The treatment process of the alumina ceramic wafers has the beneficial effects of being large in hardness, excellent in wear resistance, light in weight, strong in surface adhesive force (10-20 times of that of the untreated ceramic wafers), and firm and durable after being combined with rubber through glue.
Technical Parameter:
| Item | Unit Symbol | 95% Alumina Ceramics | 99% Alumina Ceramics | 99.7% Alumina Ceramics |
| Maximum Using Temperature | ℃ | 1600 | 1700 | 1700 |
| Water Absorption | % | 0 | 0 | 0 |
| Hardness | Gpa | ≥85 | ≥89 | ≥89 |
| Flexural Strength | MPa (psi x 103) | 336 | 550 | 550 |
| Compressive Strength | MPa (psi x 103) | 2000 | 2500 | 2500 |
| Fracture Toughness | Mpa | 4~5 | 5.6 | 6 |
| Thermal Conductivity | W/m °K | 18-25 | 30 | 30.4 |
| Thermal Shock Resistance | °C | 220 | 180-220 | 180-220 |
| Dielectricity Constant | 9.4 | 9.8 | 9.8 | |
| Dielectric Strength | kV/mm | 16 | 22 | 2 |
Alumina Ceramic Wafer more Photos
Machining work:
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
15-20 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, 30%
T/T in advance ,balance before shippment.
If you have any other question, pls feel free to contact us .
