Aluminum fluoride (AlF3) is an inorganic ceramic compound that exists in multiple polymorphic forms and is primarily valued for its high melting point and chemical stability. In industry, AlF3 serves as a critical flux agent in aluminum smelting (Hall-Héroult process), where it lowers the melting point of cryolite and improves electrical conductivity of the molten bath. It is also used as a raw material in specialty ceramics, abrasives, and optical applications, and has been investigated in research contexts for potential use in fluoride-based batteries and advanced refractory systems where thermal stability and resistance to molten metal corrosion are essential.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 45.11 | GPa | — | ||
| ↳ | 56.74 | GPa | — | ||
Poisson's Ratio(ν) | 0.03000 | - | — | ||
Shear Modulus(G)2 entries | 62.10 | GPa | — | ||
| ↳ | 75.75 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 3.228 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 8.271 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 4.990 | - | — | ||
| ↳ | 5.186 | - | — | ||
| ↳ | 3.392 range 1.972–4.813median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -139.5 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -3.914 | eV/atom | — | ||
| ↳ | -3.755 | eV/atom | — |