2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 6: Rare Earths & Ionic Liquids
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 432 pages |
| ISBN: | 978-1-987820-08-9 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Electrochemical synthesis of molybdenum and tungsten carbides coatings from ionic melts
Hasbi Kushkhov1; Ruzana Mamhegova1; Fatima Kuchmezova1; Marina Adamokova1;1KABARDINO-BALKARIAN STATE UNIVERSITY, Nalchik, Russian Federation;
Type of Paper: Regular
Id Paper: 128
Topic: 11
Abstract:
It is well-known the fact that molybdenum and tungsten carbides coatings on metal and non-metal surfaces significantly improve a corrosion and mechanical resistance of materials.
The process of obtaining molybdenum and tungsten carbides coating includes two stages: co-deposition of molybdenum, tungsten and carbon at simultaneously ions reduction on cathode surfaces; reaction between atomic Mo, W and C with double carbides (Mo2C, W2C) formation. The process does not require atmosphere protection.
We investigated the influence of temperature, concentration of components and the duration of the electrolysis on the structure of (Mo2C, W2C)-coatings.
Coatings with best properties are obtained at temperature above 900°C. Crystallites sizes depend on the temperature: the most size-crystals are deposited at temperature above 900°C. Current density was changed in range 0.05-0.1 A/cm2.