Assertion: pure silicon carbide | /r/CreatedBy | the lely process
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text: Pure silicon carbide can be made by the Lely process, in which SiC powder is sublimed into high-temperature species of silicon, carbon, silicon dicarbide (SiC 2 ), and disilicon carbide (Si 2 C) in an argon gas ambient at 2500 °C and redeposited into flake-like single crystals, sized up to 2 × 2 cm, at a slightly colder substrate.