Influence of the processes of additional phosphate post-treatment of ceria conversion coatings deposited on Al 1050 on their corrosion protective behavior

被引：6

作者：

Andreeva, R. ^{[1
]}

Stoyanova, E. ^{[1
]}

Tsanev, A. ^{[2
]}

Stoychev, D. ^{[1
]}

机构：

[1] Bulgarian Acad Sci, Rostislaw Kaischew Inst Phys Chem, Acad G Bonchev Str B1 11, Sofia 1113, Bulgaria

[2] Bulgarian Acad Sci, Lnstitute Gen & Inorgan Chem, Acad G Bonchev Str B1 11, Sofia 1113, Bulgaria

来源：

21ST INTERNATIONAL SUMMER SCHOOL ON VACUUM, ELECTRON AND ION TECHNOLOGIES | 2020年 / 1492卷

关键词：

ALUMINUM-ALLOYS; INHIBITION; FILMS;

D O I：

10.1088/1742-6596/1492/1/012019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Systematic studies were carried out with respect to the elucidation of the role of additional "post-treatment" immersion phosphate processing on conversion corrosion protective ceria coatings CCOC deposited on aluminium Al 1050. Thereupon, the influence of various compositions of the CCOC as well as the conditions of such treatment were studied, based on solutions of Na3PO4 or NH4H2PO4. The results obtained with respect to the corrosion behavior, respectively the corresponding changes in the chemical composition of the studied corrosion-protective systems, give us the reason to suppose that the phosphate layers formed on the CCOC play the role of not only protective barrier coating, but they also change the kinetics of the conjugated electrochemical reactions characterizing the corrosion of aluminium. Key words: aluminum, pre-treatment, cerium-containing conversion films, corrosion

引用

页数：6