12007-23-7

Basic information

• Product Name: HAFNIUM BORIDE
• Synonyms: HAFNIUM BORIDE;HAFNIUM DIBORIDE;HAFNIUM BORIDE, 99.5% (METALS BASIS EXCLUDING ZR), ZR ;Hafnium boride, 99% (metals basis);Hafnium boride powder;HafniuM borid;Hafnium boride powder, -325 mesh, 99% trace metals basis;Hafnium boride, 99.5% trace metals basis excluding Zr
• CAS NO: 12007-23-7
• Molecular Formula: B2Hf-
• Molecular Weight: 200.11
• EINECS: 234-500-7
• Mol File: 12007-23-7.mol
• Article Data: 0

Chemical Properties

• Melting Point: 3250°C
• Appearance: /Powder
• Density: 10.5
• Water Solubility: Insoluble in water.
• CAS DataBase Reference: HAFNIUM BORIDE(CAS DataBase Reference)
• NIST Chemistry Reference: HAFNIUM BORIDE(12007-23-7)
• EPA Substance Registry System: HAFNIUM BORIDE(12007-23-7)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26
• WGK Germany: 3
• TSCA: Yes
• Hazardous Substances Data: 12007-23-7(Hazardous Substances Data)

Usage

Description

Hafnium boride is a gray, hexagonal crystal solid with a chemical formula of HfB2. It has a lattice parameter of a=0.3141 nm and c=0.3470 nm. HAFNIUM BORIDE can be synthesized by heating HfO2, carbon (C), and B2O3. It is known for its high hardness (2900 kgf/mm2) and relatively low resistivity (8.8μohm· cm). Hafnium boride is a versatile material with various applications in different industries due to its unique properties.

Uses

Used in Wear-Resistant Coatings:
Hafnium boride is used as a wear-resistant material in coatings, providing enhanced durability and protection against wear and tear for various components and surfaces.
Used in Nuclear Reactor Control Rods:
In the nuclear industry, hafnium boride serves as a crucial component in control rods, which are essential for regulating the fission process and maintaining the stability of nuclear reactions.
Used in Hypervelocity Re-entry Vehicles:
Hafnium boride is employed in the construction of heat shields and aerodynamic leading edges for hypervelocity re-entry vehicles, such as Intercontinental Ballistic Missiles (ICBMs). Its high-temperature stability and resistance to wear make it an ideal material for these applications.
Used in High-Temperature Composites:
Hafnium boride is utilized in the preparation of high-temperature composites, particularly when combined with silicon carbide (SiC). These composites are designed for applications that require exceptional thermal stability and resistance to wear.
Used as a Refractory Material:
Due to its high melting point and resistance to wear, hafnium boride is used as a refractory material in various industrial processes that involve high temperatures.
Used as a Sputtering Target:
Hafnium boride is also used as a sputtering target with 99.5% purity to produce thin films. These films can be wear-resistant and semiconducting, making them suitable for various applications in the electronics and materials science industries.

InChI:InChI=1/2B.Hf

Related news

Nanomechanical and nanotribological behaviors of HAFNIUM BORIDE (cas 12007-23-7) thin films07/25/2019

Nanocrystalline HfB2, HfBN and multilayer HfB2/HfBN films were deposited using chemical vapor deposition. Half of the amorphous as-deposited films were subjected to annealing at 700 °C to obtain their annealed equivalent samples. Nanoindentation and nanoscratch experiments were performed to mea...detailed

Optical characterization of HAFNIUM BORIDE (cas 12007-23-7) and hafnium carbide-based ceramics for solar energy receivers07/24/2019

The availability of spectrally-selective, thermally stable and more efficient sunlight absorbers represents a crucial aspect for the development of solar energy technologies able to operate at elevated temperature. In this regard, the optical properties of dense HfB2, HfC, HfB2-SiC and HfB2-HfC-...detailed