Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
High-purity alumina ceramic support stands are structural support components made from high-purity alumina (Al₂O₃ ≥ 99.5%) precision ceramic material, manufactured through isostatic pressing, high-temperature sintering, and diamond machining. These products are specifically designed for precision support and positioning needs in extreme operating environments such as high temperature, high load, strong corrosion, and high insulation. They are widely used in high-end fields such as semiconductor manufacturing, electronic packaging, high-temperature heat treatment, precision instruments, and aerospace.
High Purity Al2O3 Ceramic Heating Element Holder
Product Description
We offer fully customized design services, allowing for custom sizes, U-slot structures, mounting holes, and special irregular contours, while ensuring strict tolerance control and long-term stable performance. Whether you need insulation support for high-voltage switchgear, heating element fixation for industrial furnaces, or precision positioning for semiconductor vacuum equipment, our alumina ceramic supports can achieve stable, durable, and maintenance-free operation in harsh environments such as high pressure, high vibration, sudden temperature changes, and corrosive conditions. As a trusted choice of global industry leaders, our ceramic bearings are the top choice for high-end applications where insulation performance, structural integrity, and long-term reliability are all indispensable.
Core Product Features
| Features | Detailed Description |
| Ultra-high Purity | with an Al₂O₃ content ≥99.5% and extremely low impurity content, the grain boundary phase is almost eliminated, ensuring the consistency and stability of the material's properties. |
| Extremely High Hardness | with a Mohs hardness of 9 and a Vickers hardness of 1800-2000 HV, its wear resistance far exceeds that of hardened steel, and it will not deform even after long-term use. |
| Excellent Temperature Resistance | the long-term operating temperature is 1600°C, and the short-term temperature resistance can reach 1800°C. It maintains structural integrity even at high temperatures. |
| Excellent Insulation | volume resistivity ≥10¹⁴ Ω·cm, dielectric strength ≥15 kV/mm, insulation performance does not degrade under high temperature and high frequency environments. |
| Ultra-high Strength | flexural strength 350~450 MPa, compressive strength ≥3000 MPa, capable of withstanding high mechanical loads. |
| Chemical Inert | resistant to strong acids, strong alkalis, and organic solvents; no metal ion precipitation; does not contaminate the supported material. |
| Precision Dimensions | it is precision machined with diamond, with dimensional tolerances up to ±0.01mm and surface roughness Ra≤0.4μm. |
| Low Thermal Expansion | it has a coefficient of thermal expansion of 7.0~8.0×10⁻⁶/°C, good thermal stability, and excellent thermal shock resistance. |
Main Technical Parameters
| Parameter Items | 99.5% Alumina | 99.9% Aluminum Oxide | 99.96% Aluminum Oxide |
| Al₂O₃ Content | ≥99.5% | ≥99.9% | ≥99.96% |
| Density | 3.85~3.90 g/cm³ | 3.90~3.95 g/cm³ | 3.96~3.98 g/cm³ |
| Flexural Strength | 350~400 MPa | 400~450 MPa | ≥450 MPa |
| Compressive Strength | ≥2500 MPa | ≥3000 MPa | ≥3200 MPa |
| Vickers Hardness | 1600~1800 HV | 1800~2000 HV | ≥2000 HV |
| Dielectric Strength | 12~15 kV/mm | 15~18 kV/mm | 18 kV/mm |
| Volume Resistivity (25°C) | ≥10¹⁴ Ω·cm | ≥10¹⁵ Ω·cm | ≥10¹⁵ Ω·cm |
| Thermal Conductivity | 25~30 W/(m·K) | 30~35 W/(m·K) | 34~36 W/(m·K) |
| Coefficient of Thermal Expansion (25~800°C) | 7.2×10⁻⁶/°C | 7.0×10⁻⁶/°C | 6.8×10⁻⁶/°C |
| Long-term Operating Temperature | 1600°C | 1700°C | 1800°C |
| Grain Size | 5~10 μm | 2~5 μm | ~1 μm |
Product Structure and Types
Depending on the application scenario, high-purity alumina ceramic supports can be provided in a variety of structural forms:
| Type | Structural Features | Typical Applications |
| Flat Plate Support | flat support surface, can be equipped with positioning grooves/positioning holes | wafer carrier, substrate support |
| Column Support | cylindrical/rectangular shape, with steps or threaded holes. | high-temperature furnace internal support columns and insulation columns |
| Irregular Support | customize complex curved surfaces or hollow structures according to drawings. | precision positioning components for semiconductor equipment |
| Porous Support | with ventilation holes or vacuum adsorption holes | vacuum adsorption platform, air flotation support |
| Composite Support | metallized + Brazed Metal Components Combined Structure | applications requiring connection to metal parts |
Typical Application Scenarios
1.Semiconductor Manufacturing
wafer carrier and transport: serving as wafer tray supports in CVD, PVD, etching, and ion implantation equipment.
process chamber components: insulating support and positioning structures within high-temperature process chambers.
probe stage support: providing a stable, insulated, and precision support platform for test probes.
2.Electronics and Electrical Engineering
high-voltage insulation supports: insulation support structures in high-voltage switches, transformers, and capacitors
electronic packaging bases: ceramic substrate supports for power modules and IGBT modules
vacuum electronic devices: insulation supports inside vacuum devices such as X-ray tubes and magnetrons
3.High-Temperature Heat Treatment
high-temperature furnace supports: supports and columns for firing plates in box furnaces, tube furnaces, and pusher kilns
heat treatment fixtures: workpiece positioning supports in quenching, tempering, and sintering processes
thermocouple Protective Sheath Supports: Insulating fasteners for high-temperature temperature measurement systems
4.Precision Machinery and Instruments
optical platform support: Vibration isolation and insulation support components in precision optical instruments
precision positioning platform: Ceramic support structures for equipment such as coordinate measuring machines and microscopes
vacuum system components: non-magnetic, non-outgassing support components within vacuum chambers
5.Aerospace and New Energy
high-temperature sensor supports: insulating supports for temperature sensors in aero-engines and gas turbines
fuel cell components: ceramic connection and support structures for SOFC solid oxide fuel cells
lithium-ion Battery Equipment: Insulating and high-temperature resistant supports in high-temperature formation and capacity testing equipment
Manufacturing Process and Quality Assurance
Quality Control
Customized services
| Customized Projects | Illustrate |
| Purity Grade | 99.5% / 99.7% / 99.8% / 99.9% / 99.96% (Optional) |
| Size Specifications | maximum machining size is Φ300mm × 200mm, or custom-made according to drawings. |
| Structural Form | flat plates, cylinders, irregular shapes, porous structures, and combined structures are all acceptable. |
| Surface Condition | sintered state (rough), ground state (Ra 0.8μm), polished state (Ra 0.1μm) |
| Accuracy Level | standard grade (±0.1mm), Precision grade (±0.02mm), Ultra-precision grade (±0.005mm) |
| Metallization | surface Mo-Mn metallization facilitates brazing connections with metal parts. |
| Special Requirements | vacuum sealing, clean packaging, traceability coding, etc. |
Selection Recommendations
| Application Scenarios | Recommended Purity | Recommended Accuracy | Key Considerations |
| Semiconductor Wafer Processing | 99.9% ~ 99.96% | ultra-precision | high purity, low outgassing, and no particulate pollution |
| Electronic Packaging Base | 99.5% ~ 99.9% | precision | insulation, thermal conductivity, dimensional accuracy |
| High temperature Furnace Support Components | 99.5% ~ 99.9% | normal | high temperature resistance, thermal shock resistance, mechanical strength |
| High Voltage Insulating Support | 99.5% ~ 99.9% | precision | dielectric strength, insulation reliability |
| Precision Instrument Support | 99.5% ~ 99.9% | precision | dimensional stability, non-magnetic, low expansion |
| General Industrial Support | 99.5% | normal | cost-effective, corrosion-resistant, and wear-resistant |
Our workshop
|
CNC Workshop |
Testing Room |
|
Surface grinding Workshop |
Sintering Workshop |
|
Circular Grinding Workshop |
Injection molding Machine Workshop |
IPv6 network supportedLeave A Message
Scan to Wechat :
Scan to WhatsApp :
