High Quality China Manufactured Niobium Crucible Price
|
Diameter(mm) |
Thickness(mm) |
Height(mm) |
Surface finish |
inner surface finish |
inner bottom finish |
|
30-50 |
2-10 |
≤200 |
≤Ra2.0 |
≤Ra2.4 |
≤Ra2.8 |
|
50-100 |
3-15 |
≤300 |
≤Ra2.0 |
≤Ra2.4 |
≤Ra2.8 |
|
100-150 |
3-15 |
≤350 |
≤Ra2.0 |
≤Ra2.4 |
≤Ra2.8 |
|
150-200 |
5-20 |
≤400 |
≤Ra2.0 |
≤Ra2.4 |
≤Ra2.8 |
|
200-300 |
8-25 |
≤500 |
≤Ra2.0 |
≤Ra2.4 |
≤Ra2.8 |
|
300-400 |
8-30 |
≤600 |
≤Ra2.0 |
≤Ra2.4 |
≤Ra2.8 |
|
400-450 |
8-30 |
≤650 |
≤Ra2.0 |
≤Ra2.4 |
≤Ra2.8 |
|
450-600 |
8-35 |
≤800 |
≤Ra2.0 |
≤Ra2.4 |
≤Ra2.8 |
What makes a high-purity niobium crucible suitable for laboratory use?
A high-purity niobium crucible(typically 99.9%+ Nb) is ideal for laboratories due to its exceptional chemical inertness, thermal stability, and corrosion resistance. Niobium's purity ensures minimal contamination of sensitive samples during high-temperature processes like melting, sintering, or crystal growth. Its low vapor pressureprevents outgassing, which is critical for ultra-high-vacuum (UHV) or controlled-atmosphere experiments.
Laboratories often use niobium crucibles for noble metal melting (e.g., gold, platinum), semiconductor material synthesis, or superconducting research. The metal's high melting point (2,468°C)allows it to withstand extreme thermal cycling without deformation. Additionally, niobium resists attack from molten glass, salts, and many acids (except hydrofluoric and strong alkalis).
The fine grain structureof premium niobium crucibles ensures uniform heat distribution, reducing hot spots that could damage delicate experiments. For reproducibility, these crucibles are often electron-beam melted (EBM) or vacuum arc remelted (VAR)to eliminate impurities. Their durabilityalso makes them cost-effective long-term investments compared to disposable alternatives.
