Description
Specifications Table
Product Name – Indium Foil, 0.5mm Thick, Puratronic™, 99.9975% Purity (Metals Basis)
Quantity/Pack Size – 100x200mm, 50x100mm, 50x50mm, 25x25mm
Form – Foil
Grade – Puratronic™ (99.9975% metals basis)
Application – High-purity lab experiments, thin-film deposition, semiconductor research
Product Overview
This Indium foil is engineered for demanding laboratory applications where ultra-high purity is non-negotiable. Manufactured to Puratronic™ standards, it delivers 99.9975% metals basis purity, eliminating trace contaminants that could compromise experimental integrity. The 0.5mm thickness provides optimal balance between flexibility and structural stability, making it suitable for precision cutting and handling in controlled environments. Its uniform surface finish ensures consistent performance in thin-film deposition processes, while the malleable nature of indium allows for easy shaping without cracking. The foil’s exceptional thermal and electrical conductivity properties make it a preferred choice for semiconductor research and specialized electronic applications. Each sheet undergoes rigorous quality control to maintain dimensional accuracy and purity specifications, with packaging designed to prevent oxidation during storage. The material’s low melting point (156.6°C) enables unique processing advantages compared to other high-purity metals, while its resistance to corrosion in ambient conditions extends its usable lifespan in laboratory settings.
FAQs
1. What is the difference between Puratronic™ grade and standard indium foil?
Puratronic™ grade represents the highest commercially available purity level at 99.9975% metals basis, with significantly lower trace element contamination compared to standard grades which typically range between 99.9% and 99.99%. This ultra-high purity is critical for applications where even ppm-level impurities could affect results, such as in semiconductor doping or advanced materials research. The refining process for Puratronic™ materials involves additional purification steps that remove metallic and non-metallic impurities more effectively than conventional methods.
2. Can this indium foil be used for vacuum deposition applications?
The 0.5mm thickness and high purity make this indium foil particularly suitable for vacuum deposition processes. Its uniform composition minimizes the risk of particulate contamination in vacuum chambers, while the malleable nature allows for easy shaping to fit crucibles or evaporation boats. The foil’s low vapor pressure at elevated temperatures enables controlled deposition rates, which is essential for creating thin films with precise thickness specifications in applications like optoelectronics or protective coatings.
3. What precautions should be taken when handling this high-purity indium?
When handling this ultra-pure indium foil, always use powder-free nitrile or vinyl gloves to prevent contamination from skin oils. Store the material in its original packaging until ready for use, and work in a clean environment with minimal airborne particulates. Avoid using metal tools that could scratch the surface or introduce foreign particles. For cutting, use ceramic or plastic implements, and clean the work surface with isopropyl alcohol prior to handling. The foil should be kept away from strong oxidizing agents and stored in a desiccator when not in use to prevent surface oxidation.
4. How does the thickness of 0.5mm compare to other common indium foil thicknesses?
The 0.5mm thickness represents a mid-range option that balances flexibility with structural integrity. Thinner foils (typically 0.1mm-0.25mm) offer greater flexibility for conformal applications but may require more careful handling to prevent tearing. Thicker options (1mm and above) provide better mechanical stability for load-bearing applications but lose some of the malleability that makes indium valuable for sealing or gasket applications. This 0.5mm thickness is particularly well-suited for applications requiring both formability and sufficient material volume, such as in thermal interface materials or as a sacrificial layer in bonding processes.
5. What is the expected shelf life of this indium foil when stored properly?
When stored in its original, unopened packaging under recommended conditions (cool, dry environment with controlled humidity), this high-purity indium foil maintains its specified properties for a minimum of 24 months from the date of manufacture. The Puratronic™ grade’s resistance to oxidation is superior to lower purity indium, but surface discoloration may occur over extended periods if exposed to air. For long-term storage beyond two years, consider vacuum sealing the foil with desiccant packets to further extend its usable life. Regular inspection for surface changes is recommended before use in critical applications.
