IMR OpenIR
A high-performance Ti-Zr Based Chromium-Free Conversion Coating on 2024 Aluminum Alloy
Li, Q. P.1,2; Yan, Z. Q.2,3; Xu, Q.1; Zhang, B.2; Sun, S.3; Liu, J. G.2; Yan, C. W.2
Corresponding AuthorLi, Q. P.(qpli@imr.ac.cn)
2016-12-01
Source PublicationINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN1452-3981
Volume11Issue:12Pages:10675-10689
AbstractIn order to further improve the corrosion resistance of the chromium-free Ti-Zr conversion coating on 2024 aluminum alloy (AA2024), a novel Ti-Zr based conversion coating on AA2024 is successfully prepared by introducing the cathodic inhibitor of benzimidazole into the Ti-Zr conversion solution. After the conversion treatment, AA2024 substrate is well covered with the porous Ti-Zr conversion coating composed of the micron-sized particles. And the Ti-Zr conversion coating mainly consists of the metallic oxide (TiO2, ZrO2, Al2O3), metallic fluoride (ZrF4 and AlF3) and C-N complex. More important is that there are no apparent corrosion products or detects could be observed during the whole 168 h NSS test, indicating the significantly excellent corrosion resistance for AA2024 with Ti-Zr conversion coating compared with other chrome-free conversion coatings. The electrochemical measurements indicate the corrosion resistance of the Ti-Zr conversion coating is not so outstanding at the initial stage, what is worth cherishing is that its anti-corrosion property is gradually improving in the following period. Therefore, the Ti-Zr conversion coating with excellent corrosion resistance might be a promising high-performance protective coating for AA2024 compared with other chrome-free conversion coating.
Keyword2024 aluminum alloy Benzimidazole Ti-Zr conversion coating Corrosion resistance
DOI10.20964/2016.12.39
Indexed BySCI
Language英语
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000391039000071
PublisherESG
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/123536
Collection中国科学院金属研究所
Corresponding AuthorLi, Q. P.
Affiliation1.Northeastern Univ, Sch Met, Shenyang 110142, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Peoples R China
3.Shenyang Univ Technol, Sch Sci, Shenyang 110870, Peoples R China
Recommended Citation
GB/T 7714
Li, Q. P.,Yan, Z. Q.,Xu, Q.,et al. A high-performance Ti-Zr Based Chromium-Free Conversion Coating on 2024 Aluminum Alloy[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2016,11(12):10675-10689.
APA Li, Q. P..,Yan, Z. Q..,Xu, Q..,Zhang, B..,Sun, S..,...&Yan, C. W..(2016).A high-performance Ti-Zr Based Chromium-Free Conversion Coating on 2024 Aluminum Alloy.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,11(12),10675-10689.
MLA Li, Q. P.,et al."A high-performance Ti-Zr Based Chromium-Free Conversion Coating on 2024 Aluminum Alloy".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 11.12(2016):10675-10689.
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