摘要
以乙醇体系[m(CH3CH2OH):m(H2O)=92.2:7.8]为研究对象,选用强碱(KOH或NaOH)作为体系的表观pH值调节剂,并用ZnCl2改变体系的Cl-含量,考察了乙醇体系的表观pH值、Cl-含量及其贮存温度和贮存时间对马口铁罐腐蚀的影响。研究表明:体系中H+含量增加可明显促进马口铁罐腐蚀;Cl-的存在亦对马口铁罐腐蚀具有明显促进,且和H+对马口铁罐腐蚀具有协同效应;体系对马口铁罐的腐蚀随贮存温度的升高、贮存时间增加而加剧,当体系表观pH值<6.0、Cl-含量为10mg·L-1时,经50℃、6个月贮存罐体已达严重腐蚀。
The ethanol system（m（CH3CH2OH）：m（H2O）=92.2：7.8） were prepared with KOH or NaOH which used as apprent pH regulator, ZnCl2 used as Cl ion content regulator. The effects of apprent pH, Cl ion content in ethanol system and its storage temperature, storage duration on corrosion of tinplate can were studied. Rersults showed that corrosion of tinplate can is promoted by increase of H ion content, meanwhile Cl ion also promoted the corrosion of tinplate can. The effect of H ion content and Cl ion on corrosion of tinplate can is cooperative, with increase in storage temperature and storage duration, the corrosion of tinplate can increased. The tinplate can containing the ethanol system with apparent pH〈6.0, Cl ion content 10 mg·L^-1 was corroded severely when it was placed for 6 months at 50℃.
出处
《全面腐蚀控制》
2005年第4期28-31,共4页
Total Corrosion Control
