Boron trioxide (B₂O₃) is an inorganic ceramic oxide commonly used as a glass-forming agent and constituent in borosilicate glasses rather than as a monolithic structural ceramic. It is primarily encountered in the glass industry as a key component that lowers melting temperatures and improves thermal shock resistance, and in smaller volumes as a dopant in specialty ceramics and refractory applications. Engineers select B₂O₃-containing formulations for their chemical durability, low thermal expansion, and ability to create glasses with precise optical and mechanical properties at lower processing temperatures compared to pure silica systems.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 33.18 | GPa | — | ||
| ↳ | 60.00 | GPa | — | ||
Poisson's Ratio(ν) | 0.1300 | - | — | ||
Shear Modulus(G)2 entries | 35.86 | GPa | — | ||
| ↳ | 55.40 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 2.519 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)4 entries | 4.900 | eV | — | ||
| ↳ | 0.000 | eV | — | ||
| ↳ | 4.890 | eV | — | ||
| ↳ | 6.545 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 4.790 | - | — | ||
| ↳ | 5.363 | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.7961 | C/m² | — | ||
| ↳ | 0.3955 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -342.4 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.00470 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | 0.1520 | eV/atom | — | ||
| ↳ | -2.640 | eV/atom | — | ||
| ↳ | -2.533 | eV/atom | — |