| 环保型低浓度硫酸盐三价铬电沉积厚铬的研究 |
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| 引用本文： | 侯峰岩,屠振密,屈云腾. 环保型低浓度硫酸盐三价铬电沉积厚铬的研究[J]. 复旦学报(自然科学版), 2012, 51(2): 168-172 |
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| 作者姓名： | 侯峰岩 屠振密 屈云腾 |
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| 作者单位： | 1.上海宝钢工业技术服务有限公司机械制造分公司,上海,201900;2.哈尔滨工业大学（威海）应用化学系,威海,264209 |
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| 摘 要： | 通过大量试验研制了一种甲酸盐-羧酸盐作配位剂的低浓度（Cr3＋含量仅为15.5g/L）硫酸盐三价铬电沉积厚铬工艺.优化后的工艺光亮电流密度范围在3.5～25A/dm2以上、铬的最高沉积速率达0.26μm/min、覆盖能力60.5%.该镀液稳定性好,且在较长时间内能保持较高的沉积速率,沉积2h镀层厚度达23.6μm.镀层表面瘤状凸起密布、无裂纹、呈非晶态、与基体结合力好、孔隙率为零、耐蚀性良好.
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| 关 键 词： | 三价铬电沉积 硫酸盐 功能铬 环境保护 特性 |
Investigation of Environmental Friendly Low Concentration Thick Chromium Sulfate Electrodeposition |
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| HOU Feng-yan,TU Zhen-mi,QU Yun-teng. Investigation of Environmental Friendly Low Concentration Thick Chromium Sulfate Electrodeposition[J]. Journal of Fudan University(Natural Science), 2012, 51(2): 168-172 |
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| Authors: | HOU Feng-yan TU Zhen-mi QU Yun-teng |
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| Affiliation: | 1.Shanghai Baosteel Industry Technological Service Company Limited,Shanghai 201900,China; 2.Applied Chemistry Department of Harbin Institute of Technology at Weihai,Weihai 264209,China) |
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| Abstract: | On a large number of experiments,low content chromium Sulfate(Cr3+ only 15.5 g/L) electrodeposition process,with formate-carboxylate as complexing agents,was developed.The bright current density range is from 3.5 to 25 A/dm2,the deposition rate reaches over 0.26μm per minute and the covering power is 60.5%.The process maintains well stability and it has high deposition rate of above 0.18μm/min in long-time continuous deposition.Chromium coating with 23.6μm thickness can be obtained in 2 h.There are many warty salients on the surface of chromium coating,which is crack-free and amorphous.The coating has good adhesion,no porosity and good corrosion resistance. |
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| Keywords: | tri-chrome electrodeposition sulfate functional chromium enviromental protection characteristics |
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