摘要
采用失重法和动电位极化曲线首次研究了棉竹竹叶提取物在1.0 mol/LHCl溶液中对冷轧钢和工业纯铝的缓蚀作用。结果表明:棉竹竹叶提取物对冷轧钢具有非常好的缓蚀作用,最大缓蚀率达95%,且在钢表面的吸附符合Langmuir吸附等温式;对铝具有中等程度的缓蚀作用,最大缓蚀率仅为55%,在铝表面的吸附也服从Langmuir吸附模型。极化曲线表明竹叶缓蚀剂为混合抑制型缓蚀剂。
The extract from Bambusa subaequalis leaves was investigated as an excellent environmentally-friendly plant inhibitor.The inhibition effect of the plant extract on the corrosion of cold rolled steel（CRS） and industrial pure aluminum in 1.0 mol/L HCl has been studied by weight loss and potentiodynamic polarization methods.The results show that the Bambusa subaequalis leaves extract is a good inhibitor in 1.0 mol/L HCl solution for CRS.The maximum inhibition efficiency is up to 95%,and the adsorption of the plant inhibitor on the CRS surface follows the Langmuir adsorption isotherm equation.For aluminum,the plant inhibitor has a moderate inhibitive performance,and the maximum inhibition efficiency is only 55%.The adsorption of the plant inhibitor on the aluminum surface is also found to obey the Langmuir adsorption isotherm equation.Polarization curves show that the plant inhibitor behaves as a mixed-type inhibitor.
出处
《云南化工》
CAS
2010年第1期28-31,共4页
Yunnan Chemical Technology
基金
西南林学院面上科研基金项目(200818M)
西南林学院林产化工加工工程校级重点学科建设项目(XKX200907)
关键词
棉竹
竹叶提取物
盐酸
缓蚀
钢
铝
吸附
Bambusa subaequalis
extract
hydrochloric acid
inhibition
steel
Aluminum
Adsorption
