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电积钴板微观组织结构及力学性能对比
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1.兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室,甘肃 兰州 730050;2.兰州理工大学 材料科学与工程学院,甘肃 兰州 730050;3.兰州理工大学 白银新材料研究院,甘肃 白银 730900

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TG146.1+6

基金项目:

National Natural Science Foundation of China (No. 52261011); Industrial Support Program for Higher Education Institutions in Gansu Province (No. 2022CYZC-19); Gansu Province Key R&D Program Projects (No. 21YF5GD186)


Comparison of Microstructure and Mechanical Properties of Electrodeposited Cobalt Plates
Author:
Affiliation:

1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China;3.Baiyin New Materials Research Institute, Lanzhou University of Technology, Baiyin 730900, China

Fund Project:

National Natural Science Foundation of China (52261011); Industrial Support Program for Higher Education Institutions in Gansu Province (2022CYZC-19); Gansu Province Key R&D Program Projects (21YF5GD186)

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    摘要:

    研究了3种电积钴板的微观组织结构和力学性能之间的差异,采用X射线衍射仪和扫描电子显微镜分析了3种电积钴板的择优取向、晶体结构和微观组织形貌;并分析了3种电积钴板的强度、硬度和韧性。结果表明:3种电积钴板均是密排六方结构(hcp)的纯钴相,晶粒取向随机。A-Co板沉积层均匀致密、孔洞较少,而B-Co板和C-Co板的沉积层较为分散且存在大量的孔洞。同时A-Co板表面的平均晶粒尺寸最小,沉积层晶粒大小分布均匀,B-Co板表面的平均晶粒尺寸最大,沉积层晶粒大小分布不均匀。3种电积钴板截面的始极片都是柱状晶结构,且始极片两侧的生长方式不同。由力学性能分析发现A-Co板的抗拉强度和硬度均高于其它2种钴板,但是韧性较差。综上所述,A-Co板的品质要明显优于B-Co板和C-Co板的品质。

    Abstract:

    In order to study the differences in microstructure and mechanical properties of three kinds of electrodeposited cobalt plates, the preferred orientation, crystal structure, and microstructure of each plate were analyzed by X-ray diffractometer and scanning electron microscope. Furthermore, the mechanical properties of electrodeposited cobalt plates were tested, including their strength, hardness, and toughness. The results show that all of the plates are pure cobalt phases with a close-packed hexagonal structure (hcp) and random grain orientation. The deposition layer of the A-Co plate is uniform and dense with few holes, while those of the B-Co and C-Co plates grow apart and has a large number of holes. Meanwhile, the average grain size on the surface of the A-Co plate is the smallest, and the grain size distribution of the deposited layer is uniform, while that of the B-Co plate is the largest, and the grain size distribution of the deposited layer is not uniform. The starting sheets of the three electrodeposited cobalt plate cross-sections are all columnar crystal structures, and the growth patterns of the two sides of the starting sheets are different. From the analysis of mechanical properties, it is found that the tensile strength and hardness of the A-Co plate are higher than those of other two cobalt plates, but the toughness is lower. In conclusion, the quality of A-Co plates is significantly better than that of B-Co plates and C-Co plates.

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徐仰涛,代靖民,裴亮,彭尹,杜海洋.电积钴板微观组织结构及力学性能对比[J].稀有金属材料与工程,2023,52(10):3387~3398.[Xu Yangtao, Dai Jingmin, Pei Liang, Peng Yin, Du Haiyang. Comparison of Microstructure and Mechanical Properties of Electrodeposited Cobalt Plates[J]. Rare Metal Materials and Engineering,2023,52(10):3387~3398.]
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历史
  • 收稿日期:2023-03-09
  • 最后修改日期:2023-04-19
  • 录用日期:2023-04-27
  • 在线发布日期: 2023-10-26
  • 出版日期: 2023-10-24