Hafnium Silicide powder has the dual properties of metal and ceramic

Overview of Hafnium Silicide HfSi2 Powder

Hafnium silicide is a kind of transition metal silicide, which is a kind of refractory intermetallic compound. Due to its unique physical and chemical properties, Hafnium silicide has been successfully applied in the fields of complementary metal-oxide-semiconductor components, thin-film coatings, bulk structural components, electrothermal elements, thermoelectric materials and photovoltaic materials. Its nanomaterials show special electrical, optical, magnetic and thermoelectric properties, and even have potential application value in the field of catalysis.However, the traditional preparation methods such as metallurgical or physical methods cannot meet the requirements of preparing transition metal silicified nanomaterials. Therefore, it is of great significance to find a simple, controllable and universally applicable preparation method for the wide application of transition metal silicide nanomaterials.

Hafnium silicate powder has a high melting point, high corrosion resistance, high oxidation resistance, good electrical conductivity, high-temperature ductility, is the intermediate phase of binary alloy system, has the dual characteristics of metal and ceramic.

Mendeleev predicted the existence of hafnium in 1869, but it was not until 1922 that Dirk Koster and George de Hivesey first isolated it. The elemental form of hafnium has a silvery grey lustrous appearance. Hafnium does not exist in nature as a free element. It is found in zirconium compounds, such as zircon.

Application of Hafnium Silicide HfSi2 Powder

Hafnium silicate powder has the dual characteristics of metal and ceramic, carbide is used for hard coating, usually using plasma spraying and other processes. In addition, hafnium carbide powder has the following applications.

1. Using hafnium silicate to prepare SiC -- hafnium silicate -- tantalum silicate (SiC -- HfSi2 -- Tasi2) anti-ablation composite coating. 

Carbon fiber reinforced carbon (C/C) composites are a new type of high-temperature-resistant composites with carbon fiber as reinforcement and pyrolytic carbon as a matrix. Because of its excellent high-temperature strength, ablation resistance and good friction and wear performance, C/C composites can be used as thermal structural materials for structural parts of gas turbine engines, nose cone caps of the space shuttle, leading edges of wings, etc. These parts mostly work under high temperature and oxidation environments.

2. An organic electroluminescent device is fabricated from hafnium silicide.

The package cover encapsulates the luminescent layer and the cathode on the anode, and the package cover comprises a silicon carbon nitride layer and a barrier layer formed on the surface of the silicon carbon nitride layer. Described in the barrier layer of the material consists of silicide and metal oxide, described silicide in silicide chromium, tantalum, silicide disi1icide hafnium, titanium, molybdenum disilicide disi1icide and at least one of two tungsten silicide, described in the metal oxide from magnesium oxide, 3 oxidation 2 aluminum, titanium dioxide, zirconium and hafnium oxide and at least one of the tantalum pentoxide.

3. A silicon and germanium alloy-based thermoelectric element is prepared by using a hafnium slide.

Silicon germanium alloy base thermoelectric elements described by electrode layer, silicon germanium alloy base thermoelectric and the electrode layer and the silicon germanium alloy base thermoelectric layer between the barrier layer, described in the barrier layer for the silicide with a mixture of silicon nitride, described silicide for molybdenum silicide, tungsten silicide, silicide cobalt, nickel silicide, silicide niobium, zirconium silicide, tantalum silicide, silicide hafnium in at least one. The silicon and germanium alloy-based thermoelectric element provided has a good combination of all surfaces, no cracks and obvious diffusion phenomenon exist at the interface, small contact resistance, good thermal contact state, and can withstand a long time of high-temperature acceleration test.

4. A kind of high temperature and oxidation resistant cermet composite coating was prepared by using hafnium silicate.

The composite film is characterized by that the coating is composed of refractory metals, refractory carbides and intermetallic compounds, and the thickness of the coating is 10μm~50μm. The refractory metal is one or more of molybdenum, tantalum, zirconium and hafnium; The refractory carbides are composed of silicon carbide and one or more of tantalum carbide, zirconium carbide and hafnium carbide; The intermetallic compound is composed of one or more of molybdenum silicide, tantalum silicide, zirconium silicide, hafnium silicide, tantalum carbosilicate, zirconium carbosilicate and hafnium carbosilicate; The crystal structure of the coating consists of amorphous and/or polycrystalline nanoparticles.

Hafnium Silicide HfSi2 Powder Price

Hafnium Silicide HfSi2 Powder price will vary randomly with the production cost, transportation cost, international situation, exchange rate, and market supply and demand of Hafnium Silicide HfSi2 Powder. Tanki New Materials Co.,Ltd Aims to help All industries and Chemical Wholesalers to find high-quality, cheap price Nanomaterials and chemicals by providing turn-key customize manufacturing services. If you are looking for Hafnium Silicide HfSi2 Powder, please feel free to send an inquiry for the latest price of Hafnium Silicide HfSi2 Powder.

Hafnium Silicide HfSi2 Powder Supplier

As a global Hafnium Silicide HfSi2 Powder supplier, Tanki New Materials Co.,Ltd has rich experiences in the properties, applications, and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metal, etc.), high-purity targets, functional ceramics, and structural devices, OEM service is available.

More information about Hafnium Silicide HfSi2 Powder