08CuPVRE钢耐大气腐蚀的机理

MECHANISM OF ATMOSPHERIC CORROSION RESISTANCE OF 08CuPVRE STEEL

０８ＣｕＰＶＲＥ钢耐大气腐蚀的机理于敬敦，吴幼林，崔秀岭，张陆（冶金部钢铁研究总院）一、前言我国研制的０８ＣｌｌＰＶＲＥ耐候钢，在成都郊外经两年大气暴晒试验以及室内加速试验，表明其耐蚀性能明显优于碳钢，与日本耐候钢ＳＰＡ－Ｃ的水平相当．为深入研究０８...

Abstract Rust analyses were made on coupons of 08CuPVRE and two other steels as control after two-year outdoor exposure in Chengdu using scanning electron micrography, electron probe and X-ray diffraction techniques. Results showed that the main composition of the inner rust layer of 08CuPVRE is Fe3O4.The layer is dense, continuous and of incomplete crystalization. An enrichment of Cu, P elements in the niner rust layer was observed.Incombination with corrosion weight loss data the effect of elemental enrichment on the structure of inner rust layer and the self-mending characteristics of fissures in the layer was discussed.