The Effects of Pulse Current Plating on the Mechanical Properties of Cobalt and Cobalt-Al2O3
Abstract
The effect of high current pulses on the mechanical properties of electro-deposited cobalt and Co-Al2O3 was studied along with two other variables, ultrasonic agitation and superimposed direct current. The deposit were prepared at pulse current densities between 0 and 100 a/dm square, a pulse width of 120 microsec and a pulse repetition time of 18 msec. The strength and hardness of both cobalt and Co-Al2O3 deposits made under these conditions showed substantial increases over conventionally prepared deposits. The improvement in mechanical properties is attributed to the refinement in grain structure and the enhancement of Al2O3 codeposition associated with the use of current pulses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1977
- Accession Number
- ADA040570
Entities
People
- Edward S. Chen
- Fritz K. Sautter