Diamond micron powder, 60 ct.,
0.1/0, 0.25/0, 0.5/0, 1/0, 2/1, 3/2, 5/3, 7/5, 14/10, 20/14, 28/20, 40/28, 60/40 Micron
Packaging: 12 gr = 60 Carat
Custom packaging (like in lots with 5 and 3 gr packs of powder)
Manufacturer: Precision abrasives, Ukraine, according to state standard.
Feedstock is outsourced, not synthesized.
Powders' crystals may form aggregates during storage and require to be dispersed: use ultrasonic disperser or shake in liquid.
Monocrystalline diamond powder.
Micron diamond powders (grain size below 40 micron) are monocrystalline by default. Yes. they may be obtained by milling of polycrystalline diamonds, but this hardly makes their crystal structure "poly", read more below.
Synthesis of polycrystalline diamonds: monocrystalline powders are pressed in a capsule, which then is exposed to high temperature and high pressure (HTHP synthesis), resulting, for example, in cutting inserts.
Synthesis of monocrystalline diamonds: graphite powder and catalyst are pressed in a capsule, which then is exposed to high temperature and high pressure (HTHP synthesis).
To receive really polycrystalline diamonds you need to use ultrafine micron powders (0.1/0 micron), obtained on super centrifuges in small amounts, because of high cost and comparatively low demand (e.g. for polishing of mirrors in space industry), so resulting crystals will be real agglomerates/polycrystals . But if you use powder 40 micron to make polycrystal and then mill it, you will receive powder containing monocrystals 40 micron and finer, but not polycrystalline powder.
Milling of polycrystalline diamonds for pastes does not make sense considering extra work and no benefits. Although defective diamond polycrystals are definitely milled. Fairy tales about "more cutting surfaces per particle" of diamond "micron polycrystal" were true about spiky diamond mono crystals synthesized on soviet presses long ago in a country far away. Presses, utilized now (American belt presses in South African E6 and Chinese cubic presses elsewhere) do not deploy synthesis profiles to make similar crystals. (Of course there are expensive exceptions :) )
Micron diamond powders (grain size below 40 micron) are monocrystalline by default. Yes. they may be obtained by milling of polycrystalline diamonds, but this hardly makes their crystal structure "poly", read more below.
Synthesis of polycrystalline diamonds: monocrystalline powders are pressed in a capsule, which then is exposed to high temperature and high pressure (HTHP synthesis), resulting, for example, in cutting inserts.
Synthesis of monocrystalline diamonds: graphite powder and catalyst are pressed in a capsule, which then is exposed to high temperature and high pressure (HTHP synthesis).
To receive really polycrystalline diamonds you need to use ultrafine micron powders (0.1/0 micron), obtained on super centrifuges in small amounts, because of high cost and comparatively low demand (e.g. for polishing of mirrors in space industry), so resulting crystals will be real agglomerates/polycrystals . But if you use powder 40 micron to make polycrystal and then mill it, you will receive powder containing monocrystals 40 micron and finer, but not polycrystalline powder.
Milling of polycrystalline diamonds for pastes does not make sense considering extra work and no benefits. Although defective diamond polycrystals are definitely milled. Fairy tales about "more cutting surfaces per particle" of diamond "micron polycrystal" were true about spiky diamond mono crystals synthesized on soviet presses long ago in a country far away. Presses, utilized now (American belt presses in South African E6 and Chinese cubic presses elsewhere) do not deploy synthesis profiles to make similar crystals. (Of course there are expensive exceptions :) )
International Buyers – Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
Grain conversion chart
Catalog of diamond and CBN tools
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