Production method and use of hafnium boride

Hafnium Boride Production Method

1.The mixture of hafnium chloride, hydrogen and boron bromide can be made into hafnium boride through red hot tungsten wire.

2. According to the stoichiometric ratio, hafnium dioxide and boron are vacuum heated in the presence of carbon, and the temperature is maintained at 1000～1750℃.

Product features

The product has high electrical conductivity and stable chemical properties. It hardly reacts with all chemical reagents (except HF) at room temperature.

Hafnium diboride HfB2 Overview

Hafnium diboride HfB2 belongs to a kind of ultra-high temperature ceramics, which is a ceramic composed of ha and boron. Its melting point is approximately 3250°C. It is an unusual ceramic with high thermal and electrical conductivity, and has the same properties as titanium diboride and zirconium diboride with the same structure. It is a gray metal appearance material. Diboride has a hexagonal crystal structure with a molar mass of 200.11 g/mol and a density of ~10.5 g/cm³.

Diboride H HfB2 is usually used in combination with carbon, boron, silicon, silicon carbide and/or nickel to improve the consolidation (sintering) of the diboride powder. It is usually made into a solid through a process called hot pressing, in which powder is pressed together by heat and pressure.

Hafnium diboride HfB2 Application

Hafnium diboride in a wear-resistant coating. Due to its excellent fire resistance, people are also considering using it together with silicon carbide (SiC) for ultra-high temperature composite materials. The addition of silicon carbide improves its oxidation resistance.

The oxidation resistance of diboride ha depends on temperature and pressure. At a temperature of 1500°C and a pressure of 1 atmosphere, a protective oxide scale of magnesium oxide is formed. When the temperature rises above 1600°C and the pressure drops below 1 atmosphere, the oxidation resistance of HfB2 will be greatly reduced. Under these conditions, the boiling temperature of B2O3 (one of the oxidation products of HfB2) is exceeded, and a protective oxide layer is formed.

Due to its strength and thermal properties, the material may be used to accelerate reentry vehicles, such as intercontinental ballistic missile insulation panels or aerodynamic front ends. Unlike polymers and composite materials, HfB2 can form an aerodynamic shape and will not disappear during the reentry process.

Diboride has also been studied as a possible new material for nuclear reactor control rods.

Diborides are also being studied as a diffusion barrier for microchips. If the synthesis is correct, the barrier thickness can be less than 7 nm.

The price of Hafnium diboride HfB2

The price of Hafnium diboride HfB2 will vary randomly with the production cost of Hafnium diboride HfB2, transportation costs, the international situation, exchange rates and the supply and demand of the Hafnium diboride HfB2 market. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for Hafnium diboride HfB2, please feel free to send an inquiry to get the latest price of Hafnium diboride HfB2.

Hafnium diboride HfB2 Supplier

As a global supplier of Hafnium diboride HfB2 powder, Tanki New Materials Co.,Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium diboride, silicon hexaboride, molybdenum boride, iron boride), high-purity targets, functional ceramics and structural devices, and provides OEM services.