Cryogenic Milling “Cryomilling” is an advanced powder processing technique where powder material is submerged in cryogenic liquid and then loaded & processed in a high energy attrition ball mill. Cryomilling has been proven to be one of the best techniques to produce large quantities of nanostructured/nanocrystalline materials which greatly improves the mechanical properties compared to their conventional counterparts. The powder is processed at -190 C. Cal Nano’s facilities include multiple cryomilling systems designed to safely process materials such as elemental metals, metal matrix composites, intermetallic compounds and more.

Overall Benefits of Cryomilling

Particle size reduction –

Due to being at cryogenic temperature, material will become embrittled which will allow for a much greater ability to break down particle size both at a faster rate and to smaller size. It can reduce polymers and other materials down to the nanoparticle size, which is extremely difficult to do with any other process.

Strength Improvement –

Cal Nano took a commercially available Aluminum aerospace alloy and doubled it's ultimate tensile strength with only cryomiling. No additives and heat treatments were needed for the improved strength. 

Moisture/Oxygen/Heat Sensitive materials

Materials remain fully protected by inert cryogenic liquid or gas throughout the cryomilling process. This makes the process perfect for materials sensitive to environmental & high temperature conditions.

High-value Custom Alloys –

Cal Nano has produced high value, custom engineered material alloys of 5 elements or more. We can achieve this safely and in 1/5 the time of standard milling processes.

Materials/Applications: 

• Metals and metallic alloys
• MMCs
• Polymers
• Rubbers
• Organics
• Refractory alloys/ HEAs