摘要
天然植物滇润楠叶的提取物可作为一种环境友好型金属缓蚀剂。作者首次用失重法研究了滇润楠叶提取物在1.0 mol/L HCl溶液中对冷轧钢的缓蚀作用。结果表明:滇润楠叶提取物对冷轧钢具有良好的缓蚀作用,质量浓度为100 mg/L、20℃时缓蚀率为84%。且在钢表面的吸附符合Freundlich吸附等温式。通过Van′t Hoff方程和Arrhenius公式求出了吸附热ΔH和表观活化能(Ea),并据此讨论了缓蚀作用机理。
The extracts from Machilus yunnanensis Lec leaves can be used as an excellent environmental-friendly corrosion inhibitor of metals. The inhibition effect of the extractive on corrosion of cold-rolled steel （CRS） in 1.0 mol/L HCI has been studied by weight loss method. The results show that the M. yunnanens/s leaves extract is a good corrosion inhibitor in hydrochloric acid for CRS, and the adsorption of inhibitor on CRS surface follows the Freundlich adsorption isotherm equation. Adsorption heat AH and apparent activation energy Ea were calculated from Van＇t Hoff and Arrhenius equations and the mechanism of corrosion inhibition is discussed in detail according to the parameters.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2009年第B10期117-120,124,共5页
Chemistry and Industry of Forest Products
基金
西南林学院林产化工加工工程校级重点学科建设项目(无编号)
西南山地森林资源保育与利用省部共建教育部重点实验室(西南林学院)资助项目(无编号)
西南林学院面上科研基金项目(200715M)
关键词
滇润楠
提取物
缓蚀剂
钢
盐酸
Machilus yunnanensis Lee
extracts
corrosion inhibitor
steel
hydrochloric acid
