冬青树叶提取液在1 mol/L盐酸介质中对Q235钢的缓蚀性能
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摘要
冬青树叶提取液作为Q235钢酸洗中的天然绿色缓蚀剂,具有一定的环保价值。通过失重法、电化学法、形貌分析等方法研究了冬青树叶提取液在1 mol/L盐酸中对Q235钢的缓蚀性能,并探讨了缓蚀机理。结果表明:通过浸泡+超声波提取得到的冬青树叶提取物缓蚀剂,随其浓度增大缓蚀性能提高,在50℃下当缓蚀剂浓度达到0.8 g/L时,缓蚀率能达到94%;该缓蚀剂属于混合型缓蚀剂,吸附方式为物理吸附,有效缓蚀成分在碳钢表面的吸附符合Langmuir等温吸附。
The extraction solution of holly leaves was used as the natural green corrosion inhibitor in Q235 steel pickling,presenting a certain environmental value. The corrosion inhibition of the extracts of holly leaves on Q235 steel in 1 mol/L hydrochloric acid was studied by weight loss method,electrochemical measurements and morphology analysis,and then the corrosion inhibition mechanism was discussed. Results showed that the extracts of holly leaves,which extracted by the methods of immerse and ultrasonic wave extraction method,exhibited better corrosion inhibition with the increase of extracts concentrations. When the concentration was 0.8 g/L,the optimal inhibition efficiency under 50 ℃was up to 94%. The extracts of holly leaves belonged to mixed-type inhibitors,and the adsorption behavior was physical adsorption. Furthermore,the adsorption of effective corrosion inhibitor on steel surface conformed to Langmuir isotherm adsorption.
The extraction solution of holly leaves was used as the natural green corrosion inhibitor in Q235 steel pickling,presenting a certain environmental value. The corrosion inhibition of the extracts of holly leaves on Q235 steel in 1 mol/L hydrochloric acid was studied by weight loss method,electrochemical measurements and morphology analysis,and then the corrosion inhibition mechanism was discussed. Results showed that the extracts of holly leaves,which extracted by the methods of immerse and ultrasonic wave extraction method,exhibited better corrosion inhibition with the increase of extracts concentrations. When the concentration was 0.8 g/L,the optimal inhibition efficiency under 50 ℃was up to 94%. The extracts of holly leaves belonged to mixed-type inhibitors,and the adsorption behavior was physical adsorption. Furthermore,the adsorption of effective corrosion inhibitor on steel surface conformed to Langmuir isotherm adsorption.
引文
[1]蔡洁,潘美贞.芒果树叶提取物对A3钢在酸性介质中缓蚀性能的研究[J].茂名学院学报,2010,20(3):17-19.
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[13]文家新,刘云霞,姚建玉,等.桂花果提取液在1 mol/L盐酸介质中对A3钢的缓蚀性能[J].材料保护,2017,50(4):20-23.
[14] KUMAR K P V,PILLAI M S N,THUSNAVIS G R. Seed Extract of Psidium Guajava as Ecofriendly Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Medium[J]. Journal of Materials Science and Technology,2011,27(12):1 143-1 149.
[15] BOUYANZER A,HAMMOUTI B,MAJIDI L. Pennyroyal oil from Mentha pulegium as corrosion inhibitor for steel in0.10 M HCl[J]. Materials Letters,2006,60(23):2 840-2 843.
[16] JYOTHI S,RAVICHANDRAN J. Corrosion Inhibition of Mild Steel in Sulphuric Acid Using Luffa Aegyptiaca Leaves Extract[J]. Acta Metallurgica Sinica(English Letters),2014,27(6):969-980.
[17]史玉璐,白玮,王姿文,等.两种酰胺醇类抗生素过期药在20%醋酸中对A3钢的缓蚀效果和机理[J].材料保护,2018,51(2):26-30.
[18]周琦,何力力,南雪丽,等.油气输送管线钢在CO2酸性溶液中的腐蚀行为[J].材料开发与应用,2005,20(5):21-25.
[19]曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002:185-187.
[2] KHADOM A A,ABD A N,AHMED N A. Xanthiumstrumarium leaves extracts as a friendly corrosion inhibitor of low carbon steel in hydrochloric acid:Kinetics and mathematical studies[J]. South African Journal of Chemical Engineering,2018,25:13-21.
[3] AMEER M A,FEKRY A M. Inhibition effect of newly synthesized heterocyclic organic molecules on corrosion of steel in alkaline medium containing chloride[J]. International Journal of Hydrogen Energy,2010,35(20):11 387-11 396.
[4]李向红,付惠,邓书端.云南甜龙竹竹叶提取物在盐酸中对钢的缓蚀作用[J].中国腐蚀与防护学报,2011,31(2):149-154.
[5]夏文绮,崔保松,李帅.四季青化学成分的研究[J].中草药,2016,47(8):1 272-1 277.
[6]陆家骝,周民峰,兰韬.索氏提取法与超声提取法的比较研究[J].污染防治技术,2015,28(3):67-69.
[7] DENG S D,LI X H. Inhibition by Ginkgo leaves extract of the corrosion of steel in HCl and H2SO4solutions[J]. Corrosion Science,2012,55:415.
[8] BENTRAH H,RAHALI Y,CHALA A. Gum Arabic as an eco-friendly inhibitor for API 5L X42 pipeline steel in HCl medium[J]. Corrosion Science,2014,82(5):426-431.
[9] JOKAR M,SHAHRABI FARAHANI T,RAMEZANZADEH B. Electrochemical and surface characterizations of morus alba pendula leaves extract(MAPLE)as a green corrosion inhibitor for steel in 1M HCl[J]. Journal of the Taiwan Institute of Chemical Engineers,2016,63:436-452.
[10]谢普军,黄立新,张彩虹,等.油橄榄叶提取物中橄榄苦苷稳定性及对亚铁离子的螯合作用[J].食品工业科技,2013,34(4):133-136.
[11] QU Q,LI L,BAI W,et al. Sodium tungstate as a corrosion inhibitor of cold rolled steel inperacetic acid solution[J].Corrosion Science,2009,51(10):2 423-2 428.
[12] LI L,ZHANG X,LEI J,et al. Adsorption and corrosion inhibition of Osmanthus fragran leaves extract on carbon steel[J]. Corrosion Science,2012,63:82-90.
[13]文家新,刘云霞,姚建玉,等.桂花果提取液在1 mol/L盐酸介质中对A3钢的缓蚀性能[J].材料保护,2017,50(4):20-23.
[14] KUMAR K P V,PILLAI M S N,THUSNAVIS G R. Seed Extract of Psidium Guajava as Ecofriendly Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Medium[J]. Journal of Materials Science and Technology,2011,27(12):1 143-1 149.
[15] BOUYANZER A,HAMMOUTI B,MAJIDI L. Pennyroyal oil from Mentha pulegium as corrosion inhibitor for steel in0.10 M HCl[J]. Materials Letters,2006,60(23):2 840-2 843.
[16] JYOTHI S,RAVICHANDRAN J. Corrosion Inhibition of Mild Steel in Sulphuric Acid Using Luffa Aegyptiaca Leaves Extract[J]. Acta Metallurgica Sinica(English Letters),2014,27(6):969-980.
[17]史玉璐,白玮,王姿文,等.两种酰胺醇类抗生素过期药在20%醋酸中对A3钢的缓蚀效果和机理[J].材料保护,2018,51(2):26-30.
[18]周琦,何力力,南雪丽,等.油气输送管线钢在CO2酸性溶液中的腐蚀行为[J].材料开发与应用,2005,20(5):21-25.
[19]曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002:185-187.