Cyanide-free pre-immersion can improve covering power and throwing power as well as the adhesion strength of coating. 无氰预浸可提高镀液深镀能力与分散能力,及镀层结合力。
A Study of Throwing Power Affecting Factors in High Aspect Ratio PCB Plating 高厚径比PCB深镀能力影响因素的研究
The throwing power, covering ability and stability of the bath were good. 镀液的覆盖能力和分散能力良好,镀液稳定性也得到较大提高。
The influence of pH value, current density, temperature and agita-tion is studied. Its covering power, throwing power, deposition rate, corrosion resistance, solderability, ther-mal stability, adhesion and hardness are all determined. 研究了pH值,电流密度,温度和搅拌的影响,测定了分散能力、深镀能力,沉积速度,抗蚀性能、焊接性能,耐温性能,结合力和硬度。
The results show that the electrolyte has advantages of high stability, excellent throwing power and covering capacity; 结果表明,该镀液性能稳定,分散能力、覆盖能力较好;
The result indicated that the properties of the product were very well. Such as curable at low temperature, electrophoresis throwing power, good water resistance, high softness and high Corrosion resistance. 研究了低温固化阴极电泳涂料的性能,结果表明,该产品的各项性能很好,如固化温度较低、泳透力高、有很好的耐水性、较高的柔性和耐蚀性。
Antioxidants stabilize the colouring solution by preventing Sn~ ( 2+) from oxidation and increase the colouring reproducibility by promoting cathodic reduction processes. Their effect on throwing power is not notable. 抗氧化剂遏制Sn~(2+)氧化而稳定槽液,促进阴极还原过程而提高着色重现性,但对分散能力影响不明显。
The experimental results suggest that complexing agents influence the stability of colouring solution through affecting the complexing equilibrium between Sn~ ( 2+) and Sn~ ( 4+), and influence the throwing power and colouring reproducibility by affecting cathode surface reactions. 认为:络合剂影响稳定性的本质是对Sn~(2+)、Sn~(4+)络合平衡的影响,同时通过影响阴极界面反应来实现对分散能力及着色重现性的影响;
A series of tests indicated that the improved additives have a little side effect on the bright current density region and throwing power, whereas they enhance the efficiency and other process properties. 试验表明,改性后的添加剂光亮电流密度范围和分散能力略有下降,但阴极电流效率得到改善,综合性能提高。
The Effect of Forward Current Density of PPR on Throwing Power 脉冲电镀的正向电流密度对深镀能力的影响
And the throwing power decreases, deposit's brightness and water washability of workpiece is bad after plating when its content is on the low side. 含量偏低,分散能力降低,镀层光泽性不好,镀后工件水洗性不好。
In the end, the influences of current density and pH on cathodic current efficiency, bath throwing power and electrochemical characteristics are discussed. 本文还研究了电流密度和pH值对阴极电流效率的影响、镀液的分散能力和电化学特性。
B 11-2 black acrylic electrophoretic coatings is featured by its excellent antirusting property, higher throwing power, and wide application range, which overcame the poor film quality of conventional pure phenolic resin and epoxy ester coatings. B11-2黑色丙烯酸电泳涂料具有抗锈蚀性强、泳透力高、施工范围宽等诸多优点,可克服传统的纯酚醛、环氧酯电泳涂料涂膜质量差的缺陷。
High Throwing Power Bright Acidic Tin Plating 高分散全光亮酸性镀锡添加剂的研究
The throwing power and current efficiency decrease and content of Cr~ 3+ in the bath increase when the content of sulphate is too high. 硫酸根的含量过高,镀液的分散能力和电流效率降低,并且镀液中Cr3+的含量上升;
A Study on Adaptability of Test Methods for ED's Throwing Power 电泳漆泳透力检测方法适用范围的研究
Effects of Stabilizing Agents on Colouring Rate and Throwing Power During Electrolytic Colouring of Aluminum 稳定剂对铝合金电解着色速度和分散能力的影响
The results show that the cooperative effects of DEP and saccharin can greatly improve the brightness and leveling of the deposits, but have a complicated effect on the throwing power of the Ni electroplating bath. 结果表明,DEP与糖精的协同作用会使镀镍层的光泽度与整平性能得到大幅提高,但对镀液分散能力影响较复杂。
Currently, the most used additives are the cheap DE or DPE-III products produced in the 1970's, which has the following shortcomings such as low throwing power ability and strait range of bright electroplating current density. 现今使用的添加剂大部分还是70年代开发的价格低廉的DE或DPE&Ⅲ,它存在分散能力差、低电流光亮区狭窄等缺点。
Wagner number& the criterion of throwing power 瓦格纳准数&均镀能力的判据
A discussion about primary distribution of current on the electrode and throwing power formula 关于电极上电流的初次分布和分散能力公式的讨论
The recommended bath can be operated at a wide range of temperature within a wide current density range, showing high throwing power and current efficency. 所推荐的槽液能在较宽的温度和电流密度范围下工作,镀液的分散能力好,电流效率高。
Results show that the chrome plating bath using this additive has a higher current efficiency at lower temperature compared with that of standard chrome plating bath, and the throwing power, covering power and corrosion resistance are improved apparently. 结果表明,与标准镀液相比,使用该添加剂后,可以在较低温度下得到更高的电流效率,而且镀铬液的分散能力、覆盖能力以及耐腐蚀性能都得到明显提高。
The deposit appearance, deposition rate, throwing power and covering power of the process were tested and compared with those of one overseas known kindred process. 对镀层外观、沉积速度及镀液分散能力与覆盖能力进行了测试,并与国外某知名品牌的工艺进行了比较。
After investigations of new type low temperature solidified low density cathode electrophoresis paint ( KNT831), the results show that this product has an improved performance such as solidification at low temperature, dried paint film with decreased-density, minus vector reduction and electrophoresis throwing power. 研究了新型低温固化低密度阴极电泳漆(KNT831)的性能。研究结果表明,该产品的性能有较大的提升,即固化温度降低、干膜密度降低、减失量降低、泳透力提高。
Experimental results showed that the solution of Ni-Fe alloy foil electrolyte had good stability, covering power and throwing power. 经实验表明,Ni-Fe合金箔电解液的稳定性较好,电解液的均镀能力、深度能力均较高。
The traditional cyanide-type gold plating bath has good stability, high current efficiency, and good throwing power. 传统的***电镀金溶液电流效率高、分散能力和覆盖能力良好、镀层结晶细致。