Dongguan Ming Rui Ceramic Technology Co.,ltd
Dongguan Ming Rui Ceramic Technology Co., Ltd
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99% 99.7% Alumina Ceramic Insulation Ring / Spacer / Wafer / Disk
Ceramic Insulation Ring
amic Insulation Ring is the best-known advanced ceramic material, is widely used in automotive, petro-chemical, fluid control,materialtransfer,Industry,electrical and electronic,semiconductor.Sapphire is single-crystal alumina.
Mingrui Ceramic is making high quality ceramic products.
Alumina ring is our main product. It’s mainly made by 95% and 99.7% Al2O3. Density from 3.6g/cm3 to 3.9g/cm3 .
We have the ability to machine the alumina ring, Tolerance can reach to +/-0.02mm after machining. Surface roughness can reach to Ra0.2um. Holes and grooves can be machined as you need.
Very big sized and small sized rings can be made according to your need.
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■Good smoothness / flatness with less porosity. Excellent in adhesion with thin film and thick film materials.
amic Insulation Ring with Less variance in outline, plate thickness, slit pitch, etc.
■Minimal warpage, bending, and undulation.
■Physical and chemical properties are stable even under a hot environment. Excellent in thermal shock resistance. High thermal conductivity and coefficient of thermal expansion similar to that of silicon.
■Superior mechanical strength. Products with higher mechanical strength are also in our lineup.
■Excellent resistance against oil and chemical.
■Excellent in insulation properties, high dielectric breakdown voltage, high surface resistivity / volume resistivity, and small dielectric constant.
■Stable breaking strength, and less variance in shape or dimensions.
■The high reflective substrate, especially suitable for optical applications such as LED, is also available.
This Ceramic Insulation Ring is characterized by its extremely high strength and thermal conductivity. The outstanding surface quality on both sides makes it the perfect companion for any commercial thick film paste and even makes it suitable for a number of thin film applications (sputtering).
With its extremely fine surface quality, ceramic Insulation Ring is designed especially to meet the highest demands in thin-film technology.
Ceramic Insulation Ring offers consistently reliable and convincing performance even when subject to high thermal and electrical loads in terms of its:
Thermocycling capability
Thermal shock resistance
Flexural strength
Surface quality
Thermal conductivity
ceramic Insulation Ring Features :
| 1) High hardness, high strength, high wear and chemical corrosion resistance, low expansion coefficient. |
Alumina Ceramic Ring Insulation :
Alumina substrates can withstand high temperature and maintain high strength and hardness. Alumina plates also have superb performances in electrical insulation, high chemical resistance and low thermal expansion. We have various sizes of semi finished shapes in stock and are able to conduct custom manufacturing for all kinds of alumina components.
Alumina Ceramic Ring Specifications
Refractory alumina ceramic substrate/ceramic plate is our main product.Misson can supply high quality alumina plates with competitive prices.
Very small and very large sized plates can be made.
Fine grinding can made tight tolerance.
High temperature and abrasive resistance is good
Quality assurance:
Alumina ceramic is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance,but relatively low strength and fracture toughness.Alumina ceramics are generally white but may also be pink or ivory.The color is derived from either the sintering additives or impurities in the raw materials.
| Properties | Units | 95 Alumina | 99 Alumina | ZrO2 |
| Density | g / cm³ | 3.65 | 3.92 | 5.95-6.0g/cm³ |
| Water absorption | % | 0 | 0 | 0 |
| Coefficient of thermal expansion | 10-6/K | 7.9 | 8.5 | 10.5 |
| Modulus of Elasticity Young's Mod | GPa | 280 | 340 | 210 |
| Poisson's ratio | / | 0.21 | 0.22 | 0.3 |
| HV Hardness HV | MPa | 1400 | 1650 | 1300-1365 |
| Flexural Strength @ room temperature | MPa | 280 | 310 | 950 |
| Flexural Strength @700°C | MPa | 220 | 230 | 210 |
| Compressive Strength @ room temperature | MPa | 2000 | 2200 | 2000 |
| Fracture Toughness | MPa *m 1/2 | 3.8 | 4.2 | 10 |
| Heat conductivity @ room temperature | W/ m*k | 18-25 | 26-30 | 2-2.2 |
| Electrical Resistivity @ room temperature | Ω*mm2 /m | >1015 | >1016 | >1015 |
| Max use temperature | °C | 1500 | 1750 | 1050 |
| Resistance to acid alkaline | / | high | high | high |
| Dielectric Constant | / | 9.5 | 9.8 | 26 |
| Dielectric Strength | KV/mm | 16 | 22 | / |
| Thermol Shock Resistance | △ T ( °C ) | 220 | 180-200 | 280-350 |
| Tensile Strength @ 25 °C | MPa | 200 | 248 | 252 |
We ( Dongguan Mingrui Ceramic Technology Co., Ltd ) are a professional manufacturer specialized
in R&D, manufacturing and selling customized all kinds of high precision zirconia and alumina ceramic parts . Our main products include ceramic rod , ceramic tube, ceramic plunger, ceramic valve, ceramic plate, ceramic shaft and bearing , ceramic nozzle etc , which are mainly used in industrial fields of Machinery, Petrochemical oil and gas, Valves, Automotive, Food Processing, Fluid Handling, Process Control, Thermal Processing, Aerospace, Defense, Eletronic and Electrical, Textile, Mechanical, Engineering, Mineral Processing, etc.
We have a full service include mold design and development , ceramic forming , precision machining
and precision detection technology. We have achieved great successes in particular requirements
which is based on cooperating with Tsinghua University and getting rich experience by our professional technical engineer teams . Our factory have an unique technical called mirror polishing which improve
our products more smooth , bright than other competitors.
Delivery:
Custom OEM will be shipped within 15 days after determining the parameters
The samples will be shipped within 3 days
Quick Delivery Via Fedex,DHL,UPS,TNT Etc.
Support customer to designate shipping company
For more informations (the price,delivery time,moq etc)about the ceramic plates, please contact us or email:admin@cerampart.com
CEO: Admin deng
Dongguan Mingrui Ceramic Tech. Co. Ltd.
Add: No.21 Chuangxing Rd., 2nd Industrial Zone of Shangsha,
Chang'an town, Dongguan city, Guangdong, China 523867
Email: admin@cerampart.com
FAQ
1. Monthly Capacity: 50,000-60,000 pcs;
2. Material: OEM or as per your suggestion;
3. Lead time: about 7-20 days, pls confirm the quantities required;
4. Incoterm: FOB, CFR, CIF;
5. Delivery Cost: It is determinated by the destination port;
6. Payment Term: PayPal; T/T; L/C.
7. Shipment: by sea, by air, by courier, by post, etc.