Hafnium silicide, a form of transitional metal silicide, and a class of refractory intermediatemetallic compounds is one example. A unique combination of chemical and physical properties makes hafnium silicide a highly effective choice in fields such as bulk structural components of semiconductors, photovoltaic materials, electronic elements and thermoelectric materials.
Hafnium-disilicide Nanomaterials exhibit special electrical and optical properties. They could also be useful in catalysis.
Why is Hafnium disilicide HfSi2 being used?
1. To prepare silicon carbide-hafnium silicide-tantalum silicide (SiC-HfSi2-TaSi2) anti-ablation composite coating
A new high temperature composite made with carbon fiber reinforced carbon (Chand C), which uses carbon fibre as reinforcement and pyrolyticcarbon as the matrix, is called carbon fiber reinforced carbon. The composite’s excellent properties at high temperatures, ablation resistance, good friction and wear characteristics led to research by the United States on Chammer C. This resulted in the creation of Cmax C from heat-proof and cauterized materials. The C/C composite is a thermal structure material that can be used for components in gas turbine engines as well as spacecraft nose cone caps and leading edges. Many of these parts are designed to work under high temperatures and in oxidation conditions.
CPAC composites, however, are very easy to oxidize. They will usually not function normally in an atmosphere of 400 degrees or more. Chammer C composites need to be properly protected from oxidation. The preparation of an anti-oxidation coat is one way of protecting them. This study shows that C / C composites have a higher ablation rate when additional refractory materials Zr (Hf), Ta, TiB2 or other refractory metallics are added. To understand the influence of metal Hf.Ta on Chand C composites’ ablation performance, SiC–HfSi2-TaSi2 antiablation coated was created by embedding. The ablation performance was determined by an oxyacetylene laser ablation device. Knot.
2. For the preparation of organic light-emitting gadgets
Package cover covers the anode’s light emitting layer as well as the cathode. The package cover also includes a silicon silicide layer and a barrier that is formed over the silicon carbonitride. Silicide and metal dioxides are used as the material for the barrier. They can include tantalum silicide (chromium), tantalum silicide (hafnium) and titanium silicide (tungsten). The metal oxide can be any of magnesium oxide or aluminum trioxide, zinc oxide, hafnium dioxide, hafnium bioxide, zirconium dioxide, tantalum pentoxide, and magnesium oxide. This organic light-emitting device has a shorter life expectancy.
3. It is possible to prepare thermoelectric components based on silicon-germanium alloy
An electrode layer is formed by a silicon-germanium alloy-based silicon thermoelectric element. A silicon-germanium layer-based silicon thermoelectric layer also acts as a thermoelectric layer. The barrier layer is made up of silicide as well as silicon nitride. Silicide includes at least one from molybdenum silicide to tungsten silicide to cobalt silicide to nickel silicide or zirconium silicide. The silicon-germanium-based thermoelectric element’s interface is strong bonded. It is resistant to cracks and diffusion phenomena, can withstand high-temperature accelerated testing for long periods, and has good thermal contact.
4. For preparing the cermet composite coated with high temperature and oxidation resistance
Refractory metal, intermetallic compound and refractory carbid are the main components of this composite film. The coating’s thickness is between 10 and 50mm. A refractory element is one of five elements: molybdenum or tantalum; zirconium or zirconium; and silicon carbide. Intermetallic compounds are one or several of molybdenum and tantalum silicides; tantalum silicides; zirconium or zirconium carosilicides; and tantalum silicides. The coating’s crystal structure is made up of either amorphous or polycrystalline nanoparticles.
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