Electrolytic Deposition of Highly Hard Coatings of a Cobalt–Molybdenum Alloy

• Published in: Materials science (New York, N.Y.) Vol. 53; no. 1; pp. 47 - 54
• Main Authors: Shtefan, V. V., Epifanova, A. S., Koval’ova, A. A., Bairachnyi, B. I.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-07-2017; Springer; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Coatings; Cobalt; Cobalt base alloys; Current efficiency; Electrodeposition; Electrolysis; Electrolysis (Chemistry); Electrolytes; Materials Science; Microhardness; Molybdenum; Molybdenum alloys; Molybdenum base alloys; Solid Mechanics; Specialty metals industry; Structural Materials; cobalt–molybdenum alloy; coating; current efficiency; rate of deposition; current density; microhardness; electrochemical deposition
• ISSN: 1068-820X; 1573-885X
• DOI: 10.1007/s11003-017-0042-6

We study the process of electrolytic deposition of a Co–Mo alloy with the use of an ammonium-trilonate electrolyte. The influence of the pH value of electrolyte and the current density on the current efficiency and the content of molybdenum in the alloy are evaluated. The structure and microhardness of the coatings are analyzed. We propose the modes of electrolysis with the help of which one can get coatings containing up to 85% of molybdenum with a hardness of up to 429 kg/mm
2
.