摘要
Ni-Co-P coatings containing Ni 46.13 wt%,Co 45.05 wt%and P 8.82 wt%were electroless-plated on carbon steel substrates and annealed at a series of temperatures.The structure of as-plated coatings was amorphous,and crystallization took place around 623 K.By annealing the coatings at 823 K for 60 min,stable face-centered cubic Ni(Co) and Ni_3P phase were obtained.Electrical resistivity decreased remarkably by increasing the annealing temperature.Both saturation magnetization and coercivity attained their highest values when the coatings were annealed at 723 K.Totally,the Ni-Co-P coatings exhibited semi-hard magnetic characteristics and could be used as magnetic recording materials after annealing.
Ni-Co-P coatings containing Ni 46.13 wt%,Co 45.05 wt%and P 8.82 wt%were electroless-plated on carbon steel substrates and annealed at a series of temperatures.The structure of as-plated coatings was amorphous,and crystallization took place around 623 K.By annealing the coatings at 823 K for 60 min,stable face-centered cubic Ni(Co) and Ni_3P phase were obtained.Electrical resistivity decreased remarkably by increasing the annealing temperature.Both saturation magnetization and coercivity attained their highest values when the coatings were annealed at 723 K.Totally,the Ni-Co-P coatings exhibited semi-hard magnetic characteristics and could be used as magnetic recording materials after annealing.
基金
Item Sponsored by National Natural Science Foundation of China[No.61107080]
Fundamental Research Funds for the Central Universities of China[2010QNA08]
