| 王永垒,李海云,陆露露,彭志翔.硫氰酸钾/硫脲复合物对45碳钢的缓蚀性能评价[J].井冈山大学自然版,2015,(4):17-20 |
| 硫氰酸钾/硫脲复合物对45碳钢的缓蚀性能评价 |
| CORROSION INHIBITION PERFORMANCE OF THE POTASSIUM THIOCYANATE/THIOUREA COMPLEX ON THE 45 CARBON STEEL |
| 投稿时间：2015-04-06 修订日期：2015-06-08 |
| DOI：10.3969/j.issn.1674-8085.2015.04.004 |
| 中文关键词: 硫氰酸钾 硫脲 失重法 复合物 45碳钢 |
| 英文关键词: potassium thiocyanate thiourea weight loss method complex 45 carbon steel |
| 基金项目:国家级大学生创新创业训练计划项目(201410375004);黄山学院校级科研项目(2014xkj012) |
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| 中文摘要: |
| 本研究借助静态腐蚀失重法确定了硫氰酸钾/硫脲缓蚀剂的最佳配方,并分别研究了该配方在5%硫酸、5%硝酸及5%盐酸中对45碳钢的缓蚀性能。结果表明:在5%硫酸溶液中,使用硫氰酸钾:硫脲为7:3的质量比配方,缓蚀剂为0.2%时对45碳钢的缓蚀达到最大,缓蚀率为82.3%;在5%硝酸溶液中,使用硫氰酸钾:硫脲为4:6的质量比配方,缓蚀剂的加入量为0.1%时对45碳钢的缓蚀率可达到99%以上;在5%盐酸中,只需加入0.2%的复合缓蚀剂(硫氰酸钾:硫脲=4:6),对45碳钢的缓蚀率可以达到76%。Tafel极化曲线表明硫氰酸钾/硫脲复合物的加入可以明显地降低45碳钢在3种酸溶液中的腐蚀电流。 |
| 英文摘要: |
| The best formula and corrosion inhibition performances of the potassium thiocyanate/thiourea complex inhibitor on the 45 carbon steel in different acid solutions (5%H2SO4, 5%HNO3, 5%HCl)were studied by static weight loss method. The results showed that the corrosion inhibition efficiency of 45 carbon steel in 5% H2SO4 was 82.3% with 0.2% adding amount of complex inhibitor (weight ratio of potassium thiocyanate to thiourea, 7:3), and it was above 99% and 76% in 5% HNO3 and HCl with 0.1% and 0.2% adding amount of complex inhibitor (weight ratio of potassium thiocyanate to thiourea, 4:6), respectively. Tafel polarization curve results showed that the addition of the potassium thiocyanate/thiourea complex can significantly reduce corrosion current. |
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