Niobium Oxide (Nb2O5) Granules

Niobium Oxide (Nb₂O₅) Granules, namely niobium pentoxide granules, are a highly valuable, high-performance material. Niobium Oxide (Nb₂O₅) Granules appear pale yellow to white and possess excellent chemical and thermal stability. Their granular form gives them unique advantages in various industrial applications.

From a physical property perspective, Niobium Oxide (Nb₂O₅) Granules have a relatively high density, approximately 4.4 to 4.6 g/cm³, making them highly effective in applications requiring high-density filling or counterweights. Niobium Oxide (Nb₂O₅) Granules have a melting point as high as 1,470°C, allowing them to maintain a stable structure and performance in high-temperature environments without decomposition or deformation, making them suitable for high-temperature processing and treatment.

In terms of chemical properties, Niobium Oxide (Nb₂O₅) Granules are an amphoteric oxide, capable of reacting with both strong acids and strong bases. This chemical characteristic enables Niobium Oxide (Nb₂O₅) Granules to have broad applications in chemical synthesis and material modification. For example, in the preparation of certain specialized ceramic materials, Niobium Oxide (Nb₂O₅) Granules can serve as additives to enhance mechanical strength, wear resistance, oxidation resistance, and other properties of ceramics.

Additionally, niobium pentoxide granules exhibit excellent optical properties. Niobium Oxide (Nb₂O₅) Granules have a high refractive index for visible and near-infrared light, making them suitable for manufacturing optical thin films and coatings. In the electronics industry, they can be used as dielectric materials for capacitors, offering high dielectric constant and excellent insulation properties, enabling efficient energy storage and conversion.

In summary, Niobium Oxide (Nb₂O₅) Granules are a versatile material. With their unique physical and chemical properties, they have broad application prospects in electronics, optics, ceramics, chemical engineering, and many other fields, making them a high-performance material with significant development potential.

Sol-gel method

Process: hydrolysis of niobium alkoxide (such as niobium ethanolate) → colloid aging → drying and calcining.

Advantages: uniform particles (50-100nm), purity > 99.9%.

Challenges: high cost of organic solvents, residual carbon may affect performance.

Hydrothermal method

Typical conditions: 200-250℃, pH=7-9, generating nanosheets or rod-like structures.

Key parameters: mineralizer (NaOH) concentration controls morphology.

Solid phase reaction method

Commonly used in industry: niobium iron ore (FeNb₂O₆) and sodium carbonate are melted → acid leaching and purification → calcination.

Cost advantage: suitable for ton-level production, but coarse particles (micrometer level).

Green process innovation
Microwave-assisted synthesis: shorten reaction time (traditional 12h → microwave 1h), energy consumption is reduced by 60%.

Bio-template method: Use cellulose template to prepare porous Nb₂O₅, and the specific surface area is increased to 200m²/g.

Optical Properties
Niobium pentoxide (Nb₂O₅) exhibits excellent optical characteristics, making it valuable for optoelectronic applications. It has a high refractive index (2.1 to 2.6 in the visible light range) and a low optical absorption coefficient, ensuring minimal energy loss in optical coatings. Its optical transparency reaches ~90% in the visible spectrum, making it suitable for anti-reflective coatings and optical filters. However, transparency sharply declines below 400 nm (UV range), limiting its use in deep-UV applications. These properties make Nb₂O₅ ideal for lenses, laser optics, and photonic devices.

Thermal Stability
Nb₂O₅ demonstrates exceptional thermal stability, with a melting point of 1512°C. It retains structural integrity even under prolonged high-temperature exposure, making it suitable for high-temperature sensors, thermal barrier coatings, and aerospace components. Its low thermal expansion coefficient further enhances its performance in extreme environments.

Chemical Stability
Nb₂O₅ is highly resistant to chemical reactions, even with strong acids and alkalis. This inertness allows its use in corrosive environments, such as chemical processing equipment and protective coatings. Its stability also ensures long-term reliability in electronic and catalytic applications.

Electrical Properties
As an n-type transition metal oxide semiconductor, Nb₂O₅ has an oxygen-dependent bandgap (3.2–4.0 eV). Its high conduction band edge (~ -4 eV vs. vacuum level) enhances charge separation efficiency, leading to higher open-circuit voltage and photoconversion efficiency in solar cells and photocatalytic systems.

Mechanical Properties
Nb₂O₅ possesses high mechanical strength and fracture toughness, making it suitable for wear-resistant coatings, structural ceramics, and reinforcement composites. Its durability ensures long-term performance in demanding industrial applications.

Electronics Applications

Used in multilayer ceramic capacitors (MLCCs), electroacoustic/electro-optic components (e.g., LiNbO₃ and KNbO₃), and ferroelectric ceramics (e.g., Pb(Mg₁/₃Nb₂/₃)O₃).

Also applied in electrochromic devices, energy-efficient windows, oxygen sensors, and photocatalysis.

Optical Applications

Acts as a hard coating for optical glass and lenses due to its low optical absorption, high refractive index, and chemical/thermal stability.

Used in optical interference filters as a high-refractive-index layer.

Energy Applications

Serves as an electrode material in lithium-ion batteries, especially monoclinic Nb₂O₅, which shows excellent performance.

Also used in supercapacitors and electrochemical sensors.

Biomedical Applications

Due to its chemical stability and low cytotoxicity, it is used in biomaterials, such as bone implants, biosensors, and dental materials.

Glass & Ceramics Applications

Added to optical lens glass to make lenses lighter, thinner, and more durable, while increasing the glass's refractive index.

Are you a factory or a manufacturer?

A: Yes, we are a factory, but we generally use our trading company to handle the business abroad. It will be more convenient to receive the remittance and arrange the shipment.

What is the delivery method?

A: Generally, we send cargo by UPS, DHL, or FedEx. Also, we can send by sea to a seaport or by air to the closest airport.

Why is your product so cost-effective?

A: We cut out the middlemen in the end-to-end manufacturing process, and we obtain raw material directly from its source.

Do you do spot quality inspection or full inspection?

A: 100% full inspection for sure. All unqualified products are discarded.

How do you ensure your lead time?

A: From material preparation to machining and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.

What is the MOQ of Niobium Oxide (Nb2O5) Granules?

A: Depends on quantity; generally, no MOQ limit.

How to pay for it?

A: A bank transfer (T/T) will be acceptable.

What is the delivery time?

A: around 7-20 days, which depends on the quantity and production.

What kind of package is it?

A: Generally, we use a carton case or a plywood case with protective material inside to ensure the safety of the cargo

What is the lead time?

A: From the order placed to cargo receiving will take around 10-25 days.

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