I have recently bought Aluminum fine powder, stabilized about 2% fat.CAS 7429-90-5 from Merck group. I thought the product should be gas-atomized but when I looked at the morphology under microscope, a flake to lath-like morphology was observed that even some of which where attached to each other similar to milled powders! Can anybody help me how (by which method) could they be produced?
Hi Behzad ... you must look on the source of aluminum, if it recycled aluminum or primary aluminum. if it secondary aluminum look if it UBC or aluminum profile or any source because each on has its alloy and mechanical and structure different from others, so the behavior will be different finally the product specifications for the end powder will be different. ... I am waiting your say ............ best regards
Only a coarse-grained aluminum powder (100-300 μm) is produced by gas atomization of the melt (such a powder is spherical). A flaky fine-grained powder (thickness of the flake about 1 micron, length of the flake about 30 microns) is actually made by milling from a coarse-grained powder. Milling takes place in ball mills under a protective medium (inert gas, kerosene and others).
Dear Dr. Jassim, Thank you for your kind reply. Actually I could find nothing about the powder source info. I contacted the Merck group, even, but received nothing!
Dear Dr. Verlotski
Thank you for your answer. I guess you've pointed at the target because the specifications match to what I have. Then you believe the ball milling has been conducted to reach finer size of powder particles?
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