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In-situ법에 의한 Cu-Fe 복합조직의 자기적 특성에 미치는 가공 및 열처리의 영향
서수경,박현순 ( S . J . Shur,H . S . Park ) 한국열처리공학회 1989 熱處理工學會誌 Vol.2 No.2
The Cu-Fe permanent magnet were prepared in situ process, which has economic and mass productive merits in producing multifilamentary composites. The purpose of this research was to study the effect of reduction ratio and heat treatment on magnetic property. As the reduction ratio of Cu-Fe wire increased, the filament structure became finer and interfilament distances decreased and the morphology of filament cross section became ribbon shape. As Fe content increased significantly. The coercivity and squareness of Cu-55wt%Fe composite increased as a reduction ratio became higher, whereas they increased to maximum values at 0.09㎜ ø for Cu-30wt%Fe, and 0.066㎜ ø for Cu-45wt%Fe respectively, and decreased for further reduction. The magnetic properties of Cu-Fe composites can be more enhanced by intermediate heat treatment. The best magnetic properties were obtained from Cu-55 wt%Fe composite deformed to 0.054㎜ ø and annealed.
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in situ법에 의한 Cu-Fe계 다섬유상복합재과제조에 관한 연구
서수정,박현순 ( S . J . Shur,H . S . Park ) 한국열처리공학회 1991 熱處理工學會誌 Vol.4 No.2
Among the many maunfactured processes of producing multifilamentary composites, in situ process is widely used owing to its simplicity and easyness of mass production. In this study, the mechanical and electromagnetic properties of Cu-Fe composite materials was investigated. The tensile strength of the Cu-Fe wires increased as the Fe content and reduction ratio were increased. The Cu-30wt%Fe composites had the best properties in terms of figure merits compared to the other Cu-Fe composites made in this study or the commercially manufactured 6/1 ACSR cables of Cu cable. The coercivity was decreased by increasing Fe content, but the squareness was increased greatly. As increasing reduction ratio, the coercivity and squareness increased up to the maximum points, and then decreased. For example, the maximum values were obtained at 0.09㎜ø for Cu-30wt%Fe composites and at 0.066㎜ø for Cu-45wt%Fe composites. The magnetic property of Cu-Fe wires produced by precipitation treatment was higher than that of Cu-Fe wires produced by thermomechanical treatment. By annealing Cu-Fe wires after drawing process, the coercivity, remanence and squareness were improved.
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