Wanotayan Thanyalux, Kantichaimongkol Pongsakorn, Chobaomsup Viriyah, Sattawitchayapit Sirikarn, Schmid Klaus, Metzner Martin, Chookajorn Tongjai, Boonyongmaneerat Yuttanant
Metallurgy and Materials Science Research Institute, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand.
Nanoscience and Technology Interdisciplinary Program, Graduate School, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand.
Nanomaterials (Basel). 2020 Oct 23;10(11):2101. doi: 10.3390/nano10112101.
The effects of zinc and sodium hydroxide concentrations in an alkaline non-cyanide zinc bath on the electrodeposition characteristics of zinc deposits are systematically investigated. Using microstructural and phase analyses of specimens with specifically designed geometries, the study indicates that the bath formulations critically control the electrogalvanizing characteristics and affect the coating surface morphology, deposition rate, throwing power, coating uniformity, and residual stresses developed during and after electrogalvanizing. The coatings produced from baths with a moderate Zn-to-NaOH ratio of 0.067-0.092 appear to provide uniform and compact deposits, moderately high deposition rate, and relatively low residual stresses.
系统研究了碱性无氰镀锌槽中锌和氢氧化钠浓度对锌镀层电沉积特性的影响。通过对具有特定设计几何形状的试样进行微观结构和相分析,该研究表明镀液配方严格控制着电镀锌特性,并影响涂层表面形态、沉积速率、分散能力、涂层均匀性以及电镀锌过程中和之后产生的残余应力。由锌与氢氧化钠比例适中(0.067 - 0.092)的镀液所制备的涂层似乎能提供均匀致密的镀层、适度较高的沉积速率以及相对较低的残余应力。