Ultra-High-Purity Alumina (4N5 & 5N) | Semiconductor & Sapphire Grade | Aogochem

Aogochem supplies Ultra-High-Purity Alumina Powder in 4N5 (99.995%) and 5N (99.999%) grades. Our semiconductor and sapphire-grade Al2O3 is essential f...

Product Description:

The Pinnacle of Material Purity for Critical Technologies

Where material purity becomes the fundamental constraint on performance, Aogochem's Ultra-High-Purity Alumina (4N5/99.995% and 5N/99.999%) sets the global standard. This is not merely a material; it is an enabler of next-generation technologies, where the presence of even trace metallic impurities can compromise device efficiency, optical clarity, and product yield. Engineered for the most demanding applications in semiconductors, optics, and energy storage, our 4N5+ and 5N Alumina delivers the exceptional chemical and physical consistency required to push the boundaries of innovation.

The global ultra-high-purity alumina market is experiencing robust growth, primarily fueled by the exponential demand for light-emitting diodes (LEDs), semiconductor wafers, and lithium-ion batteries. These industries demand unparalleled material reliability. Aogochem's state-of-the-art purification and analytical processes ensure that every batch meets the stringent specifications required to support your most critical production processes, providing a secure and high-performance supply chain from our facility to your production line.

Product Specifications: Defining Ultra-High Purity

Our Ultra-High-Purity Alumina (UHPA) is produced under meticulously controlled conditions to achieve and maintain its exceptional purity levels, available in both 4N5 (99.995%) and 5N (99.999%) grades. The primary distinction lies in the total allowable content of metallic impurities. Below are the core specifications.

Typical Chemical Composition (Impurity Levels in ppm):

Element	5N Grade (Typical Max.)	4N5 Grade (Typical Max.)	Significance of Control
Fe (Iron)	< 0.5 ppm	< 1 ppm	Prevents coloration, reduces defects in crystals and coatings.
Si (Silicon)	< 1 ppm	< 3 ppm	Critical for maintaining electrical insulation properties.
Na (Sodium)	< 0.5 ppm	< 1 ppm	Essential for semiconductor processes to prevent ionic contamination.
Ca (Calcium)	< 0.5 ppm	< 1 ppm	Avoids unwanted phases and defects during high-temperature processing.
Mg (Magnesium)	< 0.5 ppm	< 1 ppm	Controls grain growth and microstructure in final products.
Total Metallic Impurities	< 10 ppm	< 50 ppm	The definitive measure of ultra-high purity.

Key Physical Properties:

Appearance: Pure white, free-flowing powder.
Crystalline Phase: Alpha-phase (α-Al₂O₃) – the most stable and dense phase, providing superior hardness, thermal conductivity, and chemical inertness.
Available Particle Size: Customizable from sub-micron to several microns (e.g., D50: 0.5µm, 1.0µm, 2.0µm) to suit various sintering and deposition processes.
Specific Surface Area: Adjustable based on particle size requirements.

Mission-Critical Applications in High-Growth Industries

The extreme purity of our alumina makes it indispensable in industries where material perfection is non-negotiable. The following table outlines its transformative role.

Industry & Sector	Primary Applications	How Aogochem's UHPA (4N5/5N) Creates Value
Semiconductors & Electronics	Sapphire Ingot & Windows: Core raw material for growing sapphire crystals used in LED substrates, RF ICs, and optical windows. Sputtering Targets & ALD/CVD Precursors: For depositing insulating or protective alumina thin films on semiconductor devices. Electronic Ceramics: Substrates, insulators, and components requiring extreme purity for reliable performance.	Absence of impurities is critical for crystal lattice integrity, optical transmission, and electrical insulation. Prevents defects, increases yield, and ensures device longevity and reliability.
Advanced Optics & Display	Sapphire Glass: For high-end watch faces, smartphone camera lenses, and armored windows. Optical Ceramics & Phosphor Host Materials: Used in high-power lasers and lighting systems.	Delivers superior hardness, scratch resistance, and optical clarity. High purity prevents light scattering or absorption centers, ensuring brilliant transparency.
Next-Generation Energy	Lithium-Ion Battery Coatings: Ultra-thin, high-purity alumina coatings on separators and cathodes to enhance thermal stability, cycle life, and safety. Solid Oxide Fuel Cells (SOFCs): Component material.	Improves battery safety by preventing thermal runaway. Purity ensures no adverse electrochemical reactions, directly contributing to longer-lasting, safer energy storage.
High-Performance Engineering	High-End Technical Ceramics: For medical, aerospace, and precision engineering components demanding extreme wear resistance and bio-inertness.	Provides the foundational powder for sintering advanced ceramic parts with superior mechanical properties and reliability.

Strategic Advantages: Beyond the Specification Sheet

Partnering with Aogochem for your ultra-high-purity alumina needs provides strategic benefits that extend far beyond the material itself.

Analytical Assurance: We employ the most stringent analytical techniques, including Glow Discharge Mass Spectrometry (GDMS) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS), to validate purity levels and provide certified CoAs (Certificates of Analysis) with every shipment.
Application Engineering Support: Our technical team collaborates with customers to tailor particle size distribution, morphology, and handling characteristics to optimize performance in your specific process, whether it's crystal growth, coating, or sintering.
Supply Chain Integrity: We understand the critical nature of your production schedules. Our dedicated logistics and quality management systems are designed to guarantee a consistent, reliable, and documented supply of material that meets your just-in-time requirements.

Uncompromising purity for uncompromising applications. To discuss your technical requirements, request a detailed product datasheet, or inquire about sample availability for your qualification process, contact Aogochem's advanced materials specialists today.

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