FIELD: carbon materials.
SUBSTANCE: invention relates to electrochemistry of carbon materials, namely to removing carbon-containing impurities from diamond powders. Method comprises electrochemical treatment of diamond powder in sulfuric acid electrolyte, more specifically in sulfuric acid solution of manganese sulfate while electrochemical treatment is effected at concentration of manganese in electrolyte 15-30 g/L, solids/liquids ratio 1:(3-5), anodic current density 0.10-0.20 A/cm2. and temperature 125 to 170°C for 2 to 7 h. Degree of purification reaches 99.8%.
EFFECT: increased degree of removing residual graphite under relatively low temperature preventing oxidation of diamond.
1 tbl, 7 ex
| Title | Year | Author | Number |
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| METHOD OF PURIFICATION OF DIAMOND SYNTHESIS PRODUCTS AT EXTRACTION OF METALLIC NICKEL AND MANGANESE | 2005 |
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| ELECTROLYTE FOR DEPOSITION OF CHROMIUM-DIAMOND COATINGS | 1995 |
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| METHOD OF RECUPERATION OF DIAMONDS FROM NONCONDUCTION ABRASIVE AND CUTTING TOOL BASED ON BRONZE-BINDING | 1996 |
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| METHOD OF PRODUCING ELECTROCHEMICAL OXID-ANODE DIAMOND-CONTAINING COATING OF ALUMINIUM AND ITS ALLOYS | 2016 |
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