Journal
SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY
Volume 44, Issue 6, Pages 428-435Publisher
PLEIADES PUBLISHING INC
DOI: 10.3103/S1068375508060021
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- INTAS in Moldova [05-104-7540]
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By means of electron microscopy, EDX analysis, and tribotesting, there is found a correlation between the composition, morphology, and properties of Co-Mo-P alloy coatings deposited at direct current from a citrate electrolyte containing ammonium hypophosphite in a current density range of 1-15 A/dm(2), at temperatures of 28 and 60 degrees C, and pH of 4-6. It is shown that the electrolyte pH increase from 4 to 6 leads to a decrease in the phosphorus content and to an increase in the molybdenum concentration in the electrodeposits. A direct correlation between the microhardness and the wear resistance of electrodeposits and the phosphorus content in coatings is shown.
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