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Chromium (Cr) Evaporation Material, Pellets, 99.99%, 3-6 mm
Product Type: Pure Metal Evaporation Material
Research-grade laboratory product
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LABORATORY PROCUREMENT SUPPORT
For material selection, deposition-source matching, pack-size confirmation or quotation support, contact our technical sales team.
INQUIRY: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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Chromium evaporation pellets require e-beam deposition with a water-cooled copper hearth and compatible liner materials such as graphite, Al2O3, BN, or Ta. The 99.99% purity and 3-6 mm pellet size impose constraints on source geometry, process parameters, and procurement confirmation.
- Evaporation Source Compatibility: The material must be evaporated using e-beam evaporation with a water-cooled copper hearth and a liner from graphite, Al2O3, BN, or Ta to avoid contamination.
- Pellet Size Constraint: The 3-6 mm pellet size must be compatible with the deposition source feeder geometry to ensure continuous and uniform evaporation.
- Process Parameter Calibration: The melting point of 1857°C, density of 7.2 g/cm³, and Z-ratio of 0.305 must be used to calibrate e-beam power and deposition rate monitoring.
- Purity Requirement: The 99.99% purity specification must be maintained to prevent film contamination in sensitive thin-film applications.
- Procurement Verification: Deposition source compatibility, pack size, certificate requirements, and shipment conditions must be confirmed before ordering to avoid process mismatches.
How does the Z-ratio of 0.305 affect e-beam evaporation process control for chromium pellets?
The Z-ratio of 0.305 is used to calibrate the quartz crystal microbalance (QCM) deposition monitor for accurate film thickness measurement during e-beam evaporation of chromium. This value, combined with the material density of 7.2 g/cm³, must be entered into the QCM controller to correct for the acoustic impedance mismatch between chromium and the quartz crystal, ensuring reliable in-situ rate and thickness readouts.
Which liner material is recommended for e-beam evaporation of chromium pellets given the melting point of 1,857 °C?
A water-cooled copper e-beam hearth is preferred, with graphite, Al₂O₃, BN, or Ta liners listed as compatible. Chromium's high melting point (1,857 °C) requires a liner that can withstand elevated temperatures without contaminating the melt. Tantalum (Ta) liners offer high-temperature stability and low reactivity with chromium, while graphite liners are economical and chemically compatible at these temperatures.
What storage conditions are required to maintain 99.99% purity for chromium pellets in a laboratory environment?
To preserve the 99.99% purity specification, chromium pellets should be stored in an airtight, inert atmosphere (e.g., argon or nitrogen) to prevent surface oxidation and moisture adsorption. Avoid exposure to humidity, acids, or reactive gases. The pellets are 3-6 mm size and should be handled with clean tools to avoid cross-contamination prior to loading into the e-beam hearth.
Chromium (Cr) pellets at 99.99% purity with 3-6 mm size for e-beam evaporation, requiring water-cooled copper hearth and compatible liners, with melting point 1,857°C and density 7.2 g/cm³.
Positive
- High Purity (99.99%) for Reliable Deposition: The 99.99% purity specification ensures minimal contamination in thin-film applications, critical for consistent optical, electrical, or barrier properties.
- Defined Pellet Size (3-6 mm) for Source Loading: The pellet form with 3-6 mm size range facilitates uniform loading into e-beam hearths and stable evaporation rates.
Trade-offs
- Infrastructure Requirement for E-Beam Evaporation: This material is optimized for water-cooled copper e-beam hearths with compatible liners, requiring dedicated vacuum deposition equipment and cooling systems.
- High Melting Point (1,857°C) Demands Power: The melting point of 1,857°C necessitates high-energy e-beam sources, increasing operational costs and thermal management complexity.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
