Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (50권1호 24-28)

A Study on Properties of Electrodeposited Nickel-Cobalt Alloy Films from Sulfamate Solution

설파민산 니켈-코발트 합금도금 박막 물성에 대한 실험 연구

구석본;전준미;이창면;허진영;이홍기;
Koo, Seokbon;Jeon, Junmi;Lee, Changmyeon;Hur, Jinyoung;Lee, HongKee;

한국생산기술연구원 표면처리그룹;
Surface R&D Group, Korea Institute of Industrial Technology;

DOI : 10.5695/JKISE.2017.50.1.24

Abstract

The electrodeposition of Ni-Co alloy from a sulfamate bath was investigated. The cobalt content in the Ni-Co deposits is more influenced by the temperature or stirring effect than the current density in the process parameters. As cobalt contents in the Ni-Co deposited layer increased from 0 wt.% up to 43 wt.%, hardness value of the layer rised from 400 Hv up to 700 Hv and crystal orientation (111) increased. However, (200) and crystal size significantly reduced. The tensile and yield strength also increased, while the modulus of elasticity showed the maximum value of $10.4N/mm^2$ at 29 wt.%.

Keywords

Electrodeposition;Ni-Co alloy foil;Hardness;Strain;Tensile strength;Modulus of elasticity;