Iridium crucibles provide exceptional oxidation resistance, ultra-high temperature performance and excellent chemical stability for demanding crystal growth and laboratory processes.
Premium Iridium Crucibles for Sapphire Crystal Growth, Oxide Crystal Processing and High Temperature Industrial Applications
An iridium crucible is a precision-engineered vessel fabricated from high-purity iridium metal for processing materials at extremely high temperatures. Due to its exceptional melting point, excellent oxidation resistance and remarkable chemical stability, iridium is widely regarded as one of the best materials for oxide crystal growth and other high-temperature processes.
Unlike graphite crucibles, iridium crucibles do not introduce carbon contamination into oxide materials. Compared with platinum crucibles, iridium offers significantly higher temperature capability and improved structural stability, making it particularly suitable for demanding crystal growth applications.
| Material | Pure Iridium |
|---|---|
| Density | 22.56 g/cm³ |
| Melting Point | 2446°C |
| Purity | 99.95% / 99.99% |
| Typical Service | Above 2000°C |
Iridium crucibles are widely used in high-temperature crystal growth processes because they provide exceptional resistance to molten oxide materials while minimizing contamination of the growing crystal.
| Crystal Material | Typical Application | Recommended |
|---|---|---|
| Sapphire (Al₂O₃) | LED Substrates, Optical Windows | Excellent |
| YAG | Laser Crystals | Excellent |
| GGG | Magneto-Optical Devices | Excellent |
| Spinel | Transparent Armor, Optics | Excellent |
| Lithium Niobate | Electro-Optical Components | Excellent |
| Rare Earth Oxides | Advanced Functional Ceramics | Excellent |
Manufacturing high-quality iridium crucibles requires advanced metallurgical expertise, precision forming technologies and strict quality control. Every production step is carefully monitored to ensure excellent dimensional accuracy, material purity and long-term service performance under extreme operating conditions.
Sunny Steel manufactures both standard and custom iridium crucibles according to customer drawings. Dimensions, wall thickness and structural reinforcement can be optimized for different crystal growth systems and laboratory applications.
| Parameter | Typical Range |
|---|---|
| Outside Diameter | 20 – 500 mm |
| Height | 20 – 600 mm |
| Wall Thickness | 0.5 – 5.0 mm |
| Surface Finish | Machined / Polished |
| Manufacturing Method | Seamless / Fabricated |
| Purity | 99.95% / 99.99% |
| Tolerance | Available upon request |
To ensure reliable performance in demanding industrial environments, every iridium crucible is manufactured under strict quality control procedures and inspected before delivery.
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