Hafnium oxide granules are granular substances composed of hafnium and oxygen, usually white or black in colour, with high melting points, high dielectric constants, good chemical stability and optical properties, which play an important role in semiconductors, optics, ceramics and many other fields.
VIMATERIAL offers high-purity hafnium oxide particles, customizable to different sizes to meet your needs. Contact us for more information.
Appearance: usually white powder.
Density: Relatively high density, about 9.68g/cm³, in the oxide ceramic materials belong to the higher density category.
Melting point: melting point up to 2182 ℃, with a high thermal stability, able to maintain stability in high-temperature environments.
Hardness: Higher hardness gives it good abrasion and scratch resistance and can be used in applications such as wear-resistant coatings.
Solubility: Insoluble in water, hydrochloric acid and nitric acid, but soluble in concentrated sulphuric acid and hydrofluoric acid.
Stability: It is relatively stable at room temperature and pressure, and is not easy to have chemical reactions with other substances, but under special conditions such as high temperature, strong acid or strong alkali, certain chemical reactions may occur.
Optical properties: good optical properties, high transmittance in a certain wavelength range, transmittance range of about 220 ~ 12000nm, refractive index at different wavelengths, for example, in the 250nm when the refractive index of about 2.15, 500nm when about 2.
Electrical Characteristics: It has high dielectric constant, which makes it potentially valuable in the semiconductor field, and can be used for the preparation of films with high dielectric constant, such as in the gate dielectric and other applications.
Hafnium oxide granules are typically sealed in vacuum-sealed antistatic bags and then placed in durable cushioning containers for safety. The packaging clearly indicates the material name, purity, particle size, and batch number for traceability and quality assurance.
Hafnium oxide granules should be stored in a clean, dry, well-ventilated environment, away from moisture, dust, and corrosive substances. It is recommended to keep the material sealed in its original packaging until use. Avoid direct contact with bare hands; use gloves or clean tools to maintain purity. Proper storage conditions help maintain the quality and performance of the granules over a long period.
Q1: What is hafnium oxide？
A: Hafnium oxide (HfO₂) is an inorganic compound composed of hafnium and oxygen. It is an important functional material belonging to the transition metal oxide family. It possesses a high melting point (approximately 2810℃), high hardness (Mohs hardness 6.5-7.5), and excellent chemical stability, being virtually insoluble in water and most acids (except hydrofluoric acid) at room temperature. These properties make it a core material in high-temperature materials, optical coatings, and electronic devices.
Q2: What is hafnium oxide used for?
A: Hafnium oxide (HfO₂) is an important inorganic compound. Due to its high thermal neutron absorption cross-section, it is a key material for nuclear reactor control rods and also has wide applications in semiconductors, optics, and advanced memory technologies.
Nuclear Energy and High Temperature Engineering: Nuclear reactor control rods and protective materials, high-temperature refractory and coating materials, hafnium metal preparation and precursors.
Semiconductor and Microelectronics: Transistor gate dielectric layers, memory applications, other electronic components.
Optics and Multifunctional Materials: Optical coatings and laser materials, ceramics and catalysts, special functional materials.
Q3: Is hafnium oxide toxic?
A: Hafnium oxide is relatively safe under normal conditions, but its powder form may irritate the respiratory system. Wear a protective mask when handling it to avoid inhaling dust. After significant contact, rinse skin with water; if it gets into eyes, seek immediate medical attention. Store in a dry place, away from strong acids and alkalis.
Q4: Can hafnium oxide granules be customized?
A: Yes, hafnium oxide (HfO2) granules can be customized to meet specific application requirements. We offer flexible customization options, including purity levels, size distribution, and packaging specifications. Whether you need standard granules or tailored sizes for particular processes, we can produce according to your technical requirements or drawings. This ensures optimal performance and compatibility for your intended application.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
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