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Potassium (K) Evaporation Material, Pieces, 99.9%, under mineral oil/inert gas
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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Potassium must be stored under mineral oil or inert gas to prevent oxidation and violent reaction with moisture. Handling requires a strict dry inert atmosphere, such as a glovebox, to avoid pyrophoric ignition.
- Storage Atmosphere: Immerse the potassium pieces in mineral oil or maintain them under an inert gas at all times to prevent air exposure.
- Handling Environment: Transfer and load the material only within a dry inert-atmosphere glovebox or using a sealed ampoule to eliminate contact with moisture and oxygen.
- Thermal Stability: Do not store the material above its melting point of 63°C, as molten potassium has increased reactivity and handling risk.
- Evaporation Setup: Use a sealed ampoule or a tantalum, molybdenum, or tungsten boat in an inert handling setup for thermal evaporation to maintain containment.
Potassium is a highly reactive alkali metal that requires oxygen-free and moisture-free conditions throughout handling and evaporation. The following steps describe loading and thermal evaporation under inert atmosphere.
Required Equipment: Inert-atmosphere glovebox, Tantalum, molybdenum, or tungsten boat, Sealed ampoule, Inert gas supply
- Transfer to inert atmosphere
Transfer the potassium pieces from the storage container into an inert-atmosphere glovebox without exposing them to ambient air. - Load into evaporation boat
Load the pieces into a tantalum, molybdenum, or tungsten evaporation boat under a continuous flow of inert gas. - Seal or transfer to chamber
Seal the boat in a transfer vessel or directly place it into the evaporation chamber while maintaining an inert environment. - Evacuate and evaporate
Evacuate the chamber to the required base pressure and initiate resistive heating to evaporate the potassium material.
How does the low melting point of potassium (63°C) affect thermal evaporation parameters and boat selection?
Potassium's low melting point of 63°C requires precise temperature control during thermal evaporation to avoid premature melting and splattering. The recommended evaporation source is a sealed ampoule or Ta/Mo/W boat operated under strict dry inert handling conditions to ensure controlled deposition and prevent oxidation.
What are the critical handling requirements for potassium evaporation material stored under mineral oil?
Potassium is highly reactive with air and moisture; it is supplied under mineral oil or inert gas to prevent oxidation. Before loading into the evaporation source, the mineral oil must be removed under inert atmosphere (e.g., glovebox) using a dry solvent rinse. The entire loading process must be performed under strict dry inert conditions to avoid contamination and safety hazards.
What safety and storage infrastructure is required for potassium evaporation pieces?
Potassium must be stored under mineral oil or inert gas in a sealed container away from moisture and air. Handling requires a glovebox with inert atmosphere (argon or nitrogen) and appropriate PPE due to its reactivity with water and air. The material's density of 0.86 g/cm³ and low melting point of 63°C also necessitate careful temperature management during storage and transport.
Potassium evaporation material supplied as 99.9% pure pieces under mineral oil or inert gas, requiring strict dry inert handling for thermal/resistive evaporation. The low melting point (63°C) and high reactivity demand careful source selection (sealed ampoule or Ta/Mo/W boat) and controlled atmosphere to prevent oxidation.
Positive
- Defined purity and physical form: 99.9% pure Potassium pieces with specified size range under mineral oil/inert gas, enabling precise material matching for thin-film deposition.
- Integrated handling medium: Supplied under mineral oil or inert gas to protect the reactive alkali metal from oxidation, preserving material integrity before use.
Trade-offs
- Strict inert handling required: Potassium is highly reactive with air and moisture; all handling and evaporation must be performed under strict dry inert atmosphere to avoid combustion or contamination.
- Low melting point constraint: With a melting point of 63°C, the material may soften or melt prematurely during thermal evaporation if not carefully controlled, potentially affecting deposition uniformity.
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).
