电沉积铁镍钴系合金的金相结构与磁性能的研究
文献类型：学位论文
| 作者 | 刘宇星 |
| 学位类别 | 硕士 |
| 答辩日期 | 2003 |
| 授予单位 | 中国科学院过程工程研究所 |
| 授予地点 | 中国科学院过程工程研究所 |
| 导师 | 郭占成 |
| 关键词 | 软磁材料 电沉积 铁镍钴系合金 SEM形貌 磁性能 |
| 其他题名 | Morphology and Magnetic Property of Iron-Nickel-Cobalt Series Alloy by Electrodeposition |
| 学位专业 | 化学工艺 |
| 中文摘要 | 软磁材料是支持和促进社会发展的重要材料,在机电、仪器仪表等产业得到了广泛的应用.该论文研究运用电沉积法制取铁镍钴系合金箔软磁材料的工艺技术,并研究它们的金相结构与磁性能.分别在静态、动态、含添加剂、超声波辅助条件下进行了60μm厚纯镍箔的电沉积实验.为了进一步考察铁镍钴系合金箔的微观形貌,对电沉积得到的各种合金箔进行了SEM形貌分析.研究考察了电沉积铁镍钴系合金箔的磁性能,结果表明,电沉积镍基Ni-Fe合金箔在剩余磁通密度、矫顽力和磁导率方面的性能明显优于轧制坡莫合金,电沉积铁基合金箔的饱和磁通密度可达到2.25T.它们都可作为优良的软磁材料. |
| 英文摘要 | Soft magnetic material is important material in industry, which is widely used in the fields of electricity, instrument and etc. In the present work, the technology of manufacturing of iron-nickel-cobalt series alloy by electrodeposition was studied, and its morphology and magnetic property were investigated. First of all, 60 um nickel foil was made by static, dynamic, additive-contained and ultrasonic-aid electrodeposition respectively. The results showed that in the case of static electrodeposition, the limited current density was small, and the surface of nickel sample abtained was coarse, with low tensile strength. Under the dynamic deposition condition, the limited current density of electrodepositon increased, which meant the improvement of the production efficiency, and the tensile strength enhanced a little. In the presence of saccharin in the electrolyte, the surface of the sample was brightened and the nickel foil gained great tensile strength which was up to 900 MPa. On the other hand, current efficiency on cathode was above 97%. In the dynamic electrodeposition, it rose with the velocity of electrolyte flow in the beginning, which could reach 99%, then decreased a little. The tank voltage linearly rose owing to the increase of current density, and increased a little as the velocity of electrolyte flow rose. Afterwards iron foil, iron-based Fe-Ni alloy, Fe-Co alloy, Fe-Ni-Co alloy, nickel-based Ni-Fe alloy were manufactured by electrodepositon. Secondly, in order to investigate the micro-structure of the Fe-Ni-Co series alloy, all the samples attained were observed by SEM. The results showed that iron foil had a grain size of 2-3 um, and could increase to 10 um after heat treatment. The grain size of nickel foil attained in the static condition was 10-15 um. In the dynamic condition, the grains were fine with the size of 3-5 um, the morphology of cross section of nickel foil showed branch-shape crystalline. The crystalline size was remarkably decreased to about 1 um if added with saccharin. The section morphology showed ladder-shape structure. The morphology of nickel sample by ultrasonic-aid electrodeposition was similar to the case of dynamic electrodeposition. Iron-based Fe-Ni-Co series alloy by electrodeposition had well-regulated crystalline, with a grain size of 8~10 um. From the morphology of the cross section of nickel-based alloy foil, the size of particle increased from the substrate surface to the electrolyte surface. When the content of iron reached about 20%, the section morphology showed layer structure, which was similar to that of milled permalloy. Finally, the magnetic properties of Fe-Ni-Co series alloy were investigated. The results showed that nickel-based Ni-Fe alloy had predominant properties in remanent magnetic flux density, coercive force and permeability. Iron-based alloy also had a saturation magnetic flux density of 2.25 T. All these exceeded the magnetic properties of milled permalloy. |
| 语种 | 中文 |
| 公开日期 | 2013-09-16 |
| 页码 | 72 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/1353]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 推荐引用方式 GB/T 7714 | 刘宇星. 电沉积铁镍钴系合金的金相结构与磁性能的研究[D]. 中国科学院过程工程研究所. 中国科学院过程工程研究所. 2003. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。