Hafnium carbide composition properties

Hafnium carbide is usually synthesized into powder with hafnium dioxide (HfO2) and carbon in an inert or reducing atmosphere. The reaction temperature is 1900-2300 ° C. Hafnium carbide can form solid solutions with many compounds (such as ZrC, TaC, etc.).

Hafnium carbide composition properties

Properties: The density is 12.7g/cm3, and the melting point is 3890℃, which is the highest melting point among the known single compounds. The volume resistivity is 1.95×10-4Ω·cm (2900°C), and the thermal expansion coefficient is 6.73×10-6/°C. Usually hafnium dioxide (HfO2) and carbon are used to synthesize powder in an inert or reducing atmosphere. The reaction temperature is 1900-2300 °C. Hafnium carbide can form solid solutions with many compounds (such as ZrC, TaC, etc.). It has high melting point and high elastic modulus, good electrical and thermal conductivity, small thermal expansion and good impact performance.

Hafnium carbide synthesis method

Usually hafnium dioxide and carbon are used to synthesize powder in an inert or reducing atmosphere, the reaction temperature is 1900-2300 ℃, and high-density ceramic samples are prepared by hot pressing sintering method or hot isostatic pressing method.

Overview of Hafnium Carbide HfC Powder

Hafnium carbide (HfC) is a compound of carbon and hafnium. With a melting point of about 3900°C, it is one of the most difficult binary compounds known. However, its resistance to oxidation is very low, as low as 430°C.

Hafnium carbide is a black, gray, brittle solid; absorbs thermal neutrons with high cross-section; resistivity 8.8 μohm cm; most refractory binary material known; hardness 2300 kgf/mm2; used in nuclear reactor control rods; prepared by heating HfO2 Oil fumes are produced under H2 at 1900°C-2300°C. It is used in the form of crucibles for melting oxides and other oxides.

An improved spark plasma sintering (SPS) device was used to synthesize ultra-fine carbonized ha powder through the carbothermic reduction reaction of HfO2 at 1600 °C. Except for Zr, the powder purity is >99.9%; when Zr impurity is contained, the powder purity is 99.6%. Intermediate reactions and particle growth are minimized due to low synthesis temperatures, fast heating/cooling rates, and current effects during the improved SPS process. Relatively large amounts of HfC powder can be synthesized by the new synthesis method (>175 g/day). High relative density (>96%) MPa, HfC ceramics were obtained after sintering the as-synthesized powders at 2300 °C for 30 min under a pressure of 100 °C.

Hafnium carbide powder, a gray metal solid, is a single compound with the highest melting point and a good material for smelting linings of high melting point metals; it has high melting point, high hardness, good high temperature strength and corrosion resistance. It has excellent properties such as better and lower thermal conductivity, can be used as an additive for cemented carbide, and is widely used in the field of cutting tools and molds; it is also suitable for rocket nozzle materials, which can be used in rocket nose cones, commonly used in aerospace fields , can also be used in nozzles, high temperature linings, arc or electrolysis electrodes; can also be used in nuclear reactor control rods.

Applications of Hafnium Carbide HfC Powder

Hafnium carbide (HfC) has the highest melting point of all known binary alloys and therefore has many high temperature applications. It is considered a candidate material for extremely high temperature applications, such as rocket nozzles and scramjet engine components. Carbonization can also be used for hard coatings, usually by processes such as plasma spraying. In addition, HfC structural foams can be made into high temperature parts or used as thermal insulation.

Hafnium carbide (HfC) with a melting point in excess of 3890°C is a refractory binary compound. HfC and NBC can also be used as refractory coatings for nuclear reactors. The mixed carbide Ta4HfC5 has the highest melting point at 4215°C.

1. Hafnium carbide can be used as an additive for cemented carbide, and is widely used in the field of cutting tools and molds;

2 Hafnium carbide is suitable for rocket nozzle materials, can be used in rocket nose cones, in the aerospace field, and can also be used in nozzles, high temperature linings, arc or electrolysis electrodes;

3. Hafnium carbide for control rods in nuclear reactors. It is an ideal metal for making nuclear reactor control rods;

4. Hafnium carbide is used to prepare ultra-high temperature ceramics;

5. Reactants for synthesizing hafnium-containing organometallic polymers;

6. For coating.

Hafnium carbide HfC powder price

The price of hafnium carbide HfC powder will vary randomly with the production cost, transportation cost, international situation, exchange rate and market supply and demand of hafnium carbide HfC powder. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for Hafnium Carbide HfC Powder, please feel free to send an inquiry to get the latest price of Hafnium Carbide HfC Powder.

Hafnium Carbide HfC Powder Supplier

As a global hafnium carbide HfC powder supplier, Tanki New Materials Ltd has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, metals, etc.), high-purity targets, functional ceramics and structural devices, and can provide OEM services.