Hafnium Disilicide HfSi2 Powder
Formula | HfSi2 |
Synonyms | Hafnium Disilicide |
Appearance | Black Powder |
Particle Size | 15-53 um, 45-105 um, can be customized upon request |
Melting Point | 1680 °C |
Density | 8.02 g/cm 3 |
Purity | 99.5% – 99.9% |
CAS Number | 12041-56-8 |
Description of Hafnium Disilicide HfSi2 Powder
Hafnium Disilicide (HfSi2) Powder is a gray metallic powder with a high melting point (about 1,830°C), good electrical conductivity, and excellent thermal stability. It is used in microelectronics, protective coatings, heating elements, and aerospace applications due to its ability to withstand extreme temperatures and resist oxidation. The powder is also incorporated into composite materials to enhance their mechanical and thermal properties. Proper handling and storage are necessary to prevent inhalation and oxidation.
Princeton Powder is a leading supplier of HfSi2 powder. Hafnium Disilicide powder is for sale at a competitive price.
Chemical Composition
Product | Purity (%) | Particle Size (D50) | Chemical Composition (%) | |||
O | N | C | Si | |||
HfSi2-1 | >99.0 | 0.5-1.0 μm | ≤1.0 | ≤0.10 | ≤0.1 | 22.7-23.9 |
HfSi2-2 | >99.5 | 1.0-3.0 μm | ≤0.8 | ≤0.10 | ≤0.1 | 22.7-23.9 |
HfSi2-3 | >99.9 | 10-60 μm | ≤0.5 | ≤0.05 | ≤0.1 | 22.7-23.9 |
HfSi2-4 | >99.9 | -325 mesh | ≤0.3 | ≤0.05 | ≤0.1 | 22.7-23.9 |
Note | HM can provide different sizes according to customers’ specific requirements. | |||||
Applications
- Microelectronics: Used in the semiconductor industry for thin films and other electronic components due to its electrical properties and thermal stability.
- Protective Coatings: Applied as a protective coating for materials exposed to high temperatures to enhance their oxidation resistance and durability.
- Heating Elements: Utilized in high-temperature heating elements, as it maintains stability and conductivity under extreme conditions.
- Aerospace: Employed in high-temperature components for aerospace applications, where materials need to withstand harsh conditions and extreme temperatures.
- Composite Materials: Incorporated into composite materials to enhance mechanical and thermal properties, especially in applications requiring high strength and stability.
Hafnium Disilicide HfSi2 Powder Reference
- In this work, silicon–hafnia (Si-HfO2, 80/20 mol. %) feedstock was plasma sprayed for Environmental Barrier Coating bond coat application. In the as-sprayed coating, hafnium disilicide (HfSi2), HfO2 tetragonal (t), and cubic (c) phases with a total volume of ~20 % were detected together with Si and HfO2 monoclinic (m). The temperature-dependent evolution of these phases was analyzed and paired with microstructural observations. It was found that above 700 °C, HfSi2 oxidizes and HfO2 (t) and (c) transforms into (m) polymorph.