Electrodeposition of tungsten coating from Na2WO4-ZnO-WO3 molten salt using different current densities
The electroplating of tungsten coating from Na2WO4ZnO-WO3 molten salt was investigated. Tungsten was electrodeposited on low active steel (LAS) substrate at 1173 K for 30 min. Cathodic current densities with range from 50 to 95 mA/cm2 were investigated so as to obtain well defined structures for tungsten coatings. The crystal structure and microstructure of tungsten coating were characterized by scanning electron microscopy (SEM), energy dispersive X-ray condysis (EDX) and X-ray diffraction (XRD) techniques. The dense and smooth coatings with single phase of tungsten were obtained as cathodic current densities were 80 and 95 mA/cm2 respectively, and the second phase of ZnO was also observed with tungsten on the LAS substrates as cathodic current densities were below 75 mA/cm2. The thickness of the tungsten layer was approximately 11.3 um, and the bonding between metallic tungsten and LAS substrate was compact.
tungsten electrodeposition molten salt current density Na2WO4-ZnO-WO3
LIU Yanhong ZHANG Yingchun LIU Qizong GE Changchun
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
国际会议
The 3rd Asian Conference on Molten Salts and Ions Liquids 2011(第三届亚洲熔盐与离子液体会议)
哈尔滨
英文
106-108
2011-01-06（万方平台首次上网日期，不代表论文的发表时间）