Nichrome Ni/Cr Powder 80% <90 nm Evaporation ATOMFAIR®

Store under dry, inert atmosphere to prevent oxidation of the fine powder. Use only with water-cooled e-beam hearth and Al2O3 or graphite liner to avoid crucible contamination.

• Atmosphere sensitivity: The sub-90 nm powder form presents high surface area, requiring storage in a sealed container under argon or nitrogen to minimize moisture and oxygen exposure.
• Crucible compatibility: E-beam evaporation requires a water-cooled copper hearth lined with Al2O3 or graphite to prevent alloy reaction with the crucible material.
• Thermal evaporation limitation: Thermal or resistive evaporation using W or Ta boats is only supported by RFQ and may require process validation due to the alloy's melting point of 1395 °C.

Load the powder into a water-cooled e-beam hearth lined with Al2O3 or graphite. Evacuate the chamber to high vacuum and ramp the beam power gradually to achieve controlled deposition.

Required Equipment: Water-cooled e-beam evaporation system with Al2O3 or graphite liner, Inert-gas glovebox or dry transfer vessel

1. Transfer powder to liner
   Transfer the required mass of Nichrome powder from the sealed container into the Al2O3 or graphite liner inside an inert-atmosphere glovebox to prevent oxidation.
2. Load liner into hearth
   Place the loaded liner into the water-cooled copper hearth of the e-beam evaporation source, ensuring full thermal contact.
3. Evacuate chamber
   Evacuate the deposition chamber to a base pressure below 1×10⁻⁶ Torr to minimize residual gas incorporation.
4. Ramp beam power
   Gradually increase the e-beam power while monitoring the deposition rate until a stable evaporation rate is achieved.
5. Deposit film
   Open the shutter and deposit the Nichrome film to the target thickness, using a quartz crystal microbalance to control rate and thickness.

This Nichrome (Ni/Cr) evaporation material in powder form with sub-90 nm particle size is optimized for e-beam evaporation using a water-cooled hearth with Al2O3 or graphite liner, offering excellent performance for thin-film deposition of the 80% alloy composition.

Positive

• Sub-90 nm powder for uniform deposition: The < 90 nm particle size enables consistent source loading and controlled evaporation rates, critical for achieving uniform thin-film thickness in vacuum deposition processes.
• Optimized for e-beam evaporation: Rated as 'Excellent' for e-beam evaporation with water-cooled hearth and Al2O3/graphite liner, this material is engineered for high-performance deposition without requiring thermal boat modifications.

Trade-offs

• Thermal evaporation requires RFQ: Thermal or resistive evaporation is not standard and must be requested via RFQ, adding lead time and requiring custom process validation for labs without e-beam capability.
• 80% composition limits purity flexibility: The fixed 80% composition may not meet application requirements needing higher or precisely controlled Ni/Cr ratios, and alternative grades require RFQ with no standard options listed.

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.

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