Pulsed electrodeposition of Ni-Mo alloys
The effect of pulsing the current on the composition, the internal stress, and mechanical properties of Ni-Mo electrodeposits was investigated. The molybdenum, content increased with increasing peak current density and to a lesser degree with decreasing duty cycle. A reduction in the internal stresses was explained in terms of the relaxation of those due to crystallite or fine grain coalescence during the off-time and an expansion of the surface layer when hydrogen diffused into it at the start of each on-time. The mechanical properties were improved by high frequency pulse plating. Deposits consisting of alternate layers of different composition annealed at 300/sup 0/C exhibited further improvement of their mechanical properties.
- Research Organization:
- Stevens Institute of Technology, Hoboken, NJ (US)
- OSTI ID:
- 6843504
- Journal Information:
- J. Electrochem. Soc.; (United States), Vol. 135:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ELECTRODEPOSITION
CHEMICAL REACTION KINETICS
MOLYBDENUM ALLOYS
MECHANICAL PROPERTIES
NICKEL ALLOYS
ANNEALING
CHEMICAL COMPOSITION
CURRENT DENSITY
DIFFUSION
GRAIN REFINEMENT
HYDROGEN
PULSE TECHNIQUES
STRESS ANALYSIS
ALLOYS
DEPOSITION
ELECTROLYSIS
ELEMENTS
HEAT TREATMENTS
KINETICS
LYSIS
NONMETALS
REACTION KINETICS
SURFACE COATING
360103* - Metals & Alloys- Mechanical Properties
400201 - Chemical & Physicochemical Properties
360101 - Metals & Alloys- Preparation & Fabrication