Abstract
Conditions are given for the TaB2 electrochemical synthesis from such salt melts as equimolar NaCl-KCl mixtures with K2TaF7, KBF4 and KF(NaF) added at 973 K. The processes occurring in the system result from the formation of Ta and B chloride-fluoride complexes in melts. Controlling the anion composition of an electrolyzer, one can choice conditions for 'thermodynamic' mode of the synthesis. It is carried out in a sealed glass carbon electrolyzer lined with metallic Ta serving as an anode. Glass carbon, steel 3, Nb, Mo are used as a material for the cathode. With the electrolyzer temperature of 973-1023 K and the cathode density of 5×10-2-2×10-1 A/cm2 dense TaB2 coats have been obtained on steel 3 and Nb.
| Original language | English |
|---|---|
| Pages (from-to) | 71-73 |
| Number of pages | 3 |
| Journal | Rasplavy |
| Issue number | 2 |
| State | Published - Mar 1992 |
| Externally published | Yes |
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