钢丝磷化工艺优化及磷化膜性能
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摘要
利用磷酸、硝酸、氧化锌等制备了磷化液,通过硫酸铜点滴试验优化了游离酸度、总酸度、磷化温度、磷化时间等具体工艺参数。利用扫描电子显微镜(SEM)、接触角测量仪和酸碱腐蚀试验研究了磷化膜的微观形貌、润湿性和耐酸碱腐蚀性。结果表明:磷化工艺的最佳工艺参数为游离酸度17.8mg/g、总酸度93mg/g、磷化温度60℃、磷化时间5min;在最佳工艺参数下制备的磷化膜结构致密、均匀,由片状磷酸盐晶体组成,具有一定疏水性和很好的耐酸碱腐蚀性。
Phosphating solution was prepared using phosphoric acid,nitric acid and zinc oxide.The process parameters of free acidity,total acidity,phosphating temperature and phosphating time were optimized by copper sulfate drop test.The microstructure,wettability and acid and alkali corrosion resistance of phosphating film were studied by scanning electron microscopy(SEM),contact angle measuring and acid and alkali corrosion testing.The results show that the optimum process parameters for phosphating were free acidity of 17.8 mg/g,total acidity of 93 mg/g,phosphating temperature of 60 ℃,and phosphating time of 5 min.The phosphating film prepared under the optimum process parameters was dense and uniform,composed of flaky phosphate crystals,with a certain hydrophobicity and good corrosion resistance to acid and alkali.
Phosphating solution was prepared using phosphoric acid,nitric acid and zinc oxide.The process parameters of free acidity,total acidity,phosphating temperature and phosphating time were optimized by copper sulfate drop test.The microstructure,wettability and acid and alkali corrosion resistance of phosphating film were studied by scanning electron microscopy(SEM),contact angle measuring and acid and alkali corrosion testing.The results show that the optimum process parameters for phosphating were free acidity of 17.8 mg/g,total acidity of 93 mg/g,phosphating temperature of 60 ℃,and phosphating time of 5 min.The phosphating film prepared under the optimum process parameters was dense and uniform,composed of flaky phosphate crystals,with a certain hydrophobicity and good corrosion resistance to acid and alkali.
引文
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[3]李清延,赵程.62A钢丝冷拔断裂问题分析[J].青岛科技大学学报(自然科学版),2009,30(1):57-60.
[4]唐春华.现代磷化工艺实践第三部分──金属制品常规磷化工艺[J].电镀与涂饰,2015,34(10):574-580.
[5]李丹丹,赵仁亮,叶禹,等.低温快速电化学辅助磷化膜的制备及其耐蚀性[J].材料保护,2017,50(8):54-57.
[6]LI R X,YU Q M,YANG C P,et al.Innovative cleaner production for steel phosphorization using Zn-Mn phosphating solution[J].Journal of Cleaner Production,2010,18(10/11):1040-1044.
[7]CHEN Z M,WU Z L,ZHANG Q Y.The study of color film phosphating process in steel before coating[J].Advanced Materials Research,2012,581/582:1088-1091.
[8]吴炳章,陈勇,马明刚,等.常温电解磷化工艺在高碳钢丝生产中的应用[J].金属制品,2016,42(4):26-28,31.
[9]戴峭峰,刘红芳,蔡文祥,等.钢丝磷化工艺技术研究[J].金属制品,2012,38(2):15-18.
[10]董晨.连续式快速磷化工艺在钢丝生产中的应用[J].金属制品,2013,39(3):29-32.
[11]CHEN Z M,WU Z L,ZHANG Q Y.Analysis of the color phosphating process influence factors[J].Advanced materials research,2012,581/582:823-826.
[12]肖英武,杜艳霞,欧莉,等.环境及涂层缺陷对管线钢电化学腐蚀的影响[J].腐蚀科学与防护技术,2017,29(6):645-650.
[13]强士坤,董东,陆建丰,等.钢丝中温磷化生产工艺分析[J].现代冶金,2014,42(6):22-28.
[14]胡杰珍,王贵,连亚丽,等.绿色磷化处理方法研究[J].涂料工业,2017,47(4):72-77.
[15]范洪强,李淑英.固废磷化渣的排放现状及资源化研究进展[J].现代化工,2007,27(Z1):97-99.
[16]林修洲,龚敏,刘俊杰,等.环保型中温磷化工艺[J].腐蚀与防护,2007,28(2):96-98.
[17]赵欢,吕晓璇,周圣文,等.金属防护用超疏水表面主要制备方法及应用研究进展[J].表面技术,2015,44(12):49-55,97.
[18]MACIEJEWSKI H,KARASIEWICZ J,DUTK-IEWICZ M,et al.Hydrophobic materials based on fluorocarbofunctional spherosilicates[J].Silicon,2015,7(2):201-209.
[19]陈恒真,耿铁,张霞,等.超疏水表面研究进展[J].化学研究,2013,24(4):434-440.
[20]熊静文,朱继元,胡小芳,等.超疏水铜表面的制备及其耐腐蚀性能研究[J].涂料工业,2017,47(9):12-17.