摘要
采用选择腐蚀技术,提取了Cu-Fe原位复合材料中的纤维相,并测定了纤维相电极电位,同时通过极化曲线测定,研究了Cu-18wt%Fe、Cu-15wt%Fe、Cu-16wt%Fe-2wt%Cr三种原位复合材料在HSO3-和/或Cl-介质中的电化学腐蚀行为。结果表明,在Cu-16wt%Fe-2wt%Cr原位复合材料中,由于Cr元素的加入,使Fe-Cr相纤维为阴极,基体铜为阳极,二者的自腐蚀电位起始电位差低于Cu-Fe原位复合材料,导致腐蚀电流显著降低。
The fibres were extracted from Cu-Fe in situ composites by use of a selective etching technique, and the electrodepotential of the fibres was determinated.By means of polarization curve measurements,the electrolytic corrosion behavior of Cu-18wt%Fe、Cu-15wt%Fe、Cu-16wt%Fe-2wt%Cr in situ composites in HSO3-/Cl- media was studied. The results show that Fe-Crfibre is cathode,while basis metal Cu is anode because of the addition of Cr to the composites, its initial potentiometrics is lower thanCu-Fe in situ composites,so its corrosion current density obviously lowers.
出处
《全面腐蚀控制》
2005年第3期19-21,共3页
Total Corrosion Control
基金
河北省自然科学基金资助项目(503372)
