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), Journal Name: J. Electrochem. Soc.; (United States) Vol. 135:5; ISSN JESOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360101 -- Metals & Alloys-- Preparation & Fabrication
360103* -- Metals & Alloys-- Mechanical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALLOYS
ANNEALING
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CURRENT DENSITY
DEPOSITION
DIFFUSION
ELECTRODEPOSITION
ELECTROLYSIS
ELEMENTS
GRAIN REFINEMENT
HEAT TREATMENTS
HYDROGEN
KINETICS
LYSIS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
PULSE TECHNIQUES
REACTION KINETICS
STRESS ANALYSIS
SURFACE COATING