Precision Ceramic Pad Spacer Gasket Shim Alumina Ceramic Ring
Electrical Insulating
Alumina Ceramic Ring
Alumina Ceramic 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.
■Good smoothness / flatness with less porosity. Excellent in
adhesion with thin film and thick film materials.
Alumina Ceramic 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.
Applications of Alumina Ceramic Ring Ceramic Seal Faces
LED packages, Alumina Ceramic Ring for chip resistors, HIC substrates for heat dissipation, Power
modules, FAX substrates for thermal printer head*Various processing is available (thin film metalization, thick
film metalization, glaze, etc.)
This Alumina Ceramic 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, Alumina Ceramic Ring is designed especially to meet the highest demands in thin-film
technology.
Alumina Ceramic 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
Alumina Ceramic Ring Features :
1) High hardness, high strength, high wear and chemical corrosion
resistance, low expansion coefficient.
2) Good wear-resistant.
3) High corrosion-resistant.
4) Long Time warranty.
Various sizes available, and we can customize as your requirement. |
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
1. material : zirconia ceramic
2. Very small and very large size can be made
3. High temperature, good abrasive.
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
1. High heat resistance : Alumina ceramic has excellent thermal
stability,which means that it is widely used in areas where
resistance to high temperatures is essential.
2. Good wear resistance : Alumina eramic is the material of choice
for wear parts.
3. High corrosion resistance : It is insoluble in water and only
slightly soluble in strong acid and alkaline solutions. Good
chemical stability of alumina leads to high corrosion resistance.
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 of Alumina and Zirconia Ceramic :
| 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 |
Company Introduction:
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.
Industrial Ceramic Ring more photos:
Our High precision Machining Machine :
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.
