[Features and Benefits]
1.High Chemical Stability and Corrosion Resistance
Ultra-high purity reduces the risk of leaching of impurity ions (such as Fe⁺ and Na⁺), ensuring stability in strong acid, alkali, or high-temperature environments, making it suitable for harsh environments such as semiconductor etching and chemical catalysis.
2. Low Radioactivity Safety
Strict control of radionuclides prevents radiation accumulation over long-term use (for example, alpha particle radiation from electronic devices can cause integrated circuit failure), meeting the needs of radiation-sensitive fields such as medicine and aerospace.
3. Excellent Physical Properties
High Sphericity: Flowability approaches that of spherical silica, resulting in high packing density, making it suitable for precision injection molding and electronic packaging.
Low Impurity Interference: Minimizes the impact on the electrical properties of semiconductor devices (such as reduced leakage current and improved insulation).
High Thermal Stability: α-Al₂O₃ has a high phase transition temperature (approximately 1200°C), making it suitable for high-temperature applications.
[Application Field] ：
High-purity, low-radiation spherical alumina, with its extreme purity and safety, is irreplaceable in the following high-end fields:
(1)Semiconductor Industry
Semiconductor Equipment Components: Coating materials for components such as etching chambers and plasma nozzles to prevent metal impurities from contaminating wafers.
Electronic Packaging Fillers: Highly thermally conductive insulating fillers (such as epoxy resin composites) for chip packaging or substrate filling, reducing thermal resistance while preventing circuit failure caused by ion migration.
Photoresist Carriers: Ultra-high purity ensures no impurities interfere with resolution during the photolithography process.
(2) Electronic packaging and ceramic materials
Electronic substrates and MLCC:
The low-temperature sintering characteristics can reduce the sintering temperature of ceramic substrates or capacitors (e.g., from 1600°C to 1200°C), reduce energy consumption and avoid high-temperature oxidation of metal electrodes (e.g., silver, copper).
(3)Thermal conductive fillers:
The high filling capacity of spherical particles and the activity of low α phase enable them to simultaneously improve thermal conductivity and processing fluidity in polymer-based composites (e.g., epoxy resin).
(4)Bioceramics:
Low-temperature sintering properties can reduce thermal stress during the preparation of bioceramics (such as dental implants and bone repair materials), thereby improving yield.
(5)Specialty ceramic injection molding:
The high fluidity of spherical particles facilitates the injection molding of complex-shaped ceramic components (such as electronic ceramic devices).
(6)Aerospace and Nuclear Industry
-Spacecraft Thermal Insulation Materials: Low-emission properties reduce cosmic ray background interference and are used as thermal shielding for detectors or satellites.
-Nuclear Reactor Structural Components: High purity prevents radioactive activation (such as secondary radiation produced by neutron irradiation) and are used for core insulation or shielding.
(7). Medical Equipment
Radiotherapy Equipment Components: Low background radiation prevents additional radiation exposure to patients or operators.
Implant-Grade Ceramic Materials: Ultra-high purity reduces biotoxicity (such as inflammatory reactions caused by Fe³⁺) and are used in dental implants or orthopedic restorations. 4. Scientific Research and High-End Instruments
Synchronous Radiation Facility: Used as a coating material for vacuum chambers or optical components to prevent impurity scattering that affects X-ray performance.
High-Precision Sensors: Used as a substrate for sensitive elements in pressure and temperature sensors to ensure signals are free of impurity interference.
.