Hafnium Carbide particles are tiny solid particles composed of hafnium (Hf) and carbon (C) with high melting point, high hardness, good chemical stability, etc. They play an important role in many fields such as high temperature materials and cemented carbides.
Characteristics
Appearance: usually black odourless powder.
Density: Theoretical density is 12.7g/cm³, which belongs to high-density substances, which makes it have high mass and volume stability in applications.
Melting point: up to 3890 ℃, is known to be a single compound in the higher melting point of one of the substances, this high melting point characteristics make it able to maintain stability in high temperature environments, suitable for high temperature materials field.
Hardness: high Mohs hardness, with high hardness characteristics, can be used as additives for cemented carbide, can improve the wear resistance and cutting performance of the material.
Thermal expansion coefficient: about 6.73×10-⁶/°C, the coefficient of thermal expansion is small, the size change is relatively small when the temperature changes, which is conducive to maintaining the structural stability of the material.
Electrical properties: volume resistivity of 1.95 × 10-⁴Ω・cm (2900 ℃), with good electrical conductivity, in some of the requirements of electrical conductivity of high temperature application scenarios have advantages.
Chemical properties: good chemical stability and corrosion resistance, maintaining good performance at high temperatures and in complex chemical environments. Hafnocene Carbide can form solid solutions with many compounds (e.g. ZrC, TaC, etc.), which can improve the material’s properties and expand its range of applications.
Applications
Aerospace:
Rocket nozzle materials: Hafnocene carbide has a high melting point, high hardness, good thermal stability and a small coefficient of thermal expansion, etc. It can withstand high temperatures, high pressures and high speeds generated by rocket launches, and is very suitable for use as the throat material of rocket nozzles and other high-temperature parts of the structural components. It can ensure that the nozzle in extreme conditions to maintain structural integrity and stability of performance, the normal operation of the rocket and propulsion play a key role.
Vehicle thermal protection parts: In hypersonic vehicles, due to the extremely fast flight speed, friction with the air will generate a lot of heat, the surface temperature of the vehicle rises sharply. Hafnium carbide can be used in the manufacture of aircraft thermal protection systems, such as the nose cone, wing leading edge and other key parts of the heat-resistant components, can effectively resist the erosion of high temperature heat flow, to protect the structure of the aircraft and internal equipment.
Nuclear industry field:
Nuclear reactor control rods: Hafnium carbide has a high neutron absorption cross-section and can effectively absorb neutrons, so it can be used as a control rod material for nuclear reactors. By controlling the insertion depth of the control rods in the reactor, the number of neutrons and the reaction rate can be adjusted, thus realising the precise control of the nuclear reactor and ensuring the safety and stability of the nuclear reaction.
Refractory coatings for nuclear reactors: The internal working environment of nuclear reactors is harsh, with high temperatures and radiation. Hafnium carbide’s high temperature and corrosion resistance makes it possible to use it as a refractory coating material inside the nuclear reactor to protect the structural components of the reactor from high temperatures and radiation damage, and to extend the service life of the nuclear reactor.
Tool and mould making: The high hardness of hafnium carbide allows it to be used as an additive in cemented carbide. In the manufacture of tools and moulds, the addition of hafnium carbide can improve the hardness, wear resistance and cutting performance of cemented carbide, so that the tools and moulds can better resist wear and deformation in the process of machining, prolonging the service life, and improving the machining efficiency and machining quality.
Electronic industry: in some high-power electronic devices, such as high-power lasers, microwave devices, etc., need to use materials with good thermal conductivity and high temperature resistance to dissipate heat and ensure the normal operation of the device. Hafnium carbide’s good electrical and thermal conductivity and high melting point makes it can be used as the heat dissipation material or electrode material of these electronic devices, which can effectively conduct the heat generated inside the device, reduce the temperature of the device, and improve the performance and reliability of the device.
High-temperature structural materials field: In addition to the above applications, hafnium carbide can also be used to manufacture other high-temperature structural parts, such as the lining of high-temperature furnaces, high-temperature bearings, seals and so on. These parts work in high-temperature environments and need to have good high-temperature resistance, mechanical properties and chemical stability, and hafnium carbide can meet these requirements to ensure the normal operation of the equipment.
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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