+高级检索
TiB2涂层熔盐电沉积制备与表征
作者:
作者单位:

1.东北大学多金属共生矿生态化冶金教育部重点实验室;2.六盘水师范学院化学与材料工程学院;3.东北大学轧制技术及连轧自动化国家重点实验室

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金资助(项目号52074084)


Preparation and characterization of TiB2 coating by molten salt electrodeposition
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    炭阴极在铝电解槽中受熔盐和铝液腐蚀而影响寿命,而TiB2涂层是铝电解槽理想的阴极材料。本文以石墨为基体,在KF-KCl-K2TiF6-KBF4熔盐中以0.4-0.7A.cm-2电流密度、700-800℃温度电沉积TiB2涂层,通过XRD衍射仪、SEM-EDS、表面粗糙度测量仪及附着力测试仪对不同电流密度和温度下制备的涂层进行表征。结果表明:在石墨基体上可以得到均匀连贯的TiB2涂层;增大电流密度、降低电解温度可以细化涂层晶粒,提高涂层致密性;在0.6 A.cm-2、750℃最优电沉积条件下制得的TiB2涂层的厚度为229 μm,择优取向为<110>,表面粗糙度为14.85 μm,涂层与石墨基体的结合力为6.39 MPa。

    Abstract:

    The lifespan of carbon cathode is affected by the corrosion of molten salt and molten aluminum in aluminum reduction cell, and TiB2 coating is an ideal cathode material for aluminum reduction cells.SIn this paper, TiB2 coatings were electrodeposited on graphite in KF-KCl-K2TiF6-KBF4molten salt at 700-800 oC with the current density of 0.4-0.7A.cm-2. The coatings prepared at different current densities and temperatures were analyzed by XRD, SEM-EDS, surface roughness tester and adhesion tester.SThe results show that the obtained TiB2 coating is uniform and coherent well to the graphite substrate. Increasing the current density and the electrolysis temperature can refine the grain size of the coating and improve the compactness of the coating. A TiB2 coating thickness of 229 μm, the preferred orientation of <110>, the surface roughness of 14.85 μm, and the adhesion between the coating and graphite substrate of 6.39 MPa is prepared by electrodeposition under the optimum condition of 0.6 A.cm-2 and 750 ℃.

    参考文献
    相似文献
    引证文献
引用本文

郭不拘,薛正铎,张元坤,牛子儒,刘爱民,李松,雷以柱,石忠宁. TiB2涂层熔盐电沉积制备与表征[J].稀有金属材料与工程,2024,53(2):449~456.[Guo Buju, Xue Zhengduo, Zhang Yuankun, Niu Ziru, Liu Aimin, Li Song, Lei Yizhu, Shi Zhongning. Preparation and characterization of TiB2 coating by molten salt electrodeposition[J]. Rare Metal Materials and Engineering,2024,53(2):449~456.]
DOI:10.12442/j. issn.1002-185X.20230029

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-01-16
  • 最后修改日期:2023-03-28
  • 录用日期:2023-04-07
  • 在线发布日期: 2024-02-28
  • 出版日期: 2024-02-23