Study on Preparation and Properties of Tungsten Coating Based on WC Electrolysis

被引：1
|
作者：
Zhang, Qinghua [1 ,2 ]
Xi, Xiaoli [1 ,2 ]
Qin, Wenxuan [1 ]
Zhang, Liwen [1 ]
Ma, Liwen [2 ]
Nie, Zuoren [1 ,2 ]
机构：
[1] Beijing Univ Technol, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
[2] Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2019年 / 14卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Molten salt; tungsten coating; tungsten carbide recovery; MOLTEN-SALT ELECTRODEPOSITION; CURRENT-DENSITY; ELECTROCHEMICAL-BEHAVIOR; CARBIDE SCRAP; RECOVERY; COBALT; MICROSTRUCTURE; DISSOLUTION; METAL;
D O I：
10.20964/2019.12.11
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Tungsten carbide (WC) is used as an anode in molten sodium tungstate to prepare a tungsten coating. Recovery of tungsten powder from WC electrolysis has been extensively studied, but the possibility of making available Tungsten coatings is still unrealized. A theoretical analysis was first carried out, and the feasibility of electrolysis was confirmed. Subsequently, this conclusion was also verified experimentally. In this experiment, the coating was studied by regulating the cathode current density. The tungsten coatings prepared at various current densities were characterized by X-ray Diffraction (XRD), Scanning Electron Microscope-Energy Dispersive Spectroscopy (SEM-EDS), nanoindentation tests, and Laser Scanning Confocal Microscopy LSCM. The results show that at a cathode current density of 70 mA.cm(-2), an optimized tungsten coating can be obtained. The tungsten coating has a thickness of 4.1 mu m and a minimum average grain size.
引用
收藏
页码：11092 / 11101
页数：10
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