Evaluation of the corrosion resistance of different galvanized steels treated in a cerium salt solution

2005 ◽  
Vol 56 (4) ◽  
pp. 229-236 ◽  
Author(s):  
Y.-K. Song ◽  
F. Mansfeld
Keyword(s):  
Corrosion Resistance ◽  
Salt Solution ◽  
Galvanized Steels ◽  
Cerium Salt

Evaluation of the Corrosion Resistance of Different Galvanized Steels Treated in Cerium Salt-Based Solutions

2019 ◽  
Vol 1 (9) ◽  
pp. 133-152
Author(s):  
Florian Mansfeld ◽  
Yon-Kyun Song ◽  
Leif Speckert
Keyword(s):  
Corrosion Resistance ◽  
Galvanized Steels ◽  
Cerium Salt

Corrosion Resistance of Conversion Film Formed on Aluminium Alloy Using Cerium Salt Surface Treatment

2002 ◽  
Vol 18 (3) ◽  
pp. 224-227 ◽  
Author(s):  
W. Zhang ◽  
J.-Q. Li ◽  
Y.-S. Wu ◽  
J.-T. Xu ◽  
K. Chen
Keyword(s):  
Corrosion Resistance ◽  
Surface Treatment ◽  
Aluminium Alloy ◽  
Cerium Salt

Experimental Study on the Corrosion Resistance of GFRPP Rebar in Alkali, Acid and Salt Solutions

2010 ◽  
Vol 146-147 ◽  
pp. 1356-1360
Author(s):  
Chuan Wang ◽  
Li Li Sui ◽  
Jin Ping Ou
Keyword(s):  
Corrosion Resistance ◽  
Salt Solution ◽  
Life Prediction ◽  
Civil Engineering ◽  
High Strength ◽  
Thermoplastic Polymer ◽  
Fiber Reinforced ◽  
Good Resistance ◽  
Glass Fiber Reinforced ◽  
Durability Performance

More and more researchers took interests in FRP materials in civil engineering for their light weight, high strength and excellent durability performance. But common FRP rebars or plates used for reinforcing or strengthening in civil engineering are mostly made by fiber reinforced thermosetting polymer (FRSP) materials. While FRSP can not be reshaped so that many of the special shapes as bending rebar or hoop rebar cannot be easily obtained and handled at site. So, here we developed and fabricated Glass Fiber Reinforced Polypropylene (GFRPP) according to Fiber Reinforced Thermoplastic Polymer (FRTP) systems. This paper is focused on the experimental and theorial studies on the corrosion resistance of GFRPP rebar in alkali, acid and salt solution at different temperature. According to the corrosion experimental data, some durability life prediction would be concluded through FHWA method, and which may be valuable to a deeper understanding on the durability of GFRPP rebars. The results show that these kinds of GFRTP rebars have good resistance in acid and salt solution, and their mechanical properties can remain well, while bad resistance in alkali solution. As can be regarded that these FRTP rebars can be a vital support of common FRSP materials and which would play an important part in civil engineering in the future.

Corrosion Behavior of Sm-Based Bulk Metallic Glasses in Salt Solution

2012 ◽  
Vol 229-231 ◽  
pp. 26-30
Author(s):  
Lin Bo Li ◽  
Jing Guo ◽  
Fei Peng Lou
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Salt Solution ◽  
Metallic Glasses ◽  
Glassy State ◽  
Bulk Metallic Glasses ◽  
Immersion Test ◽  
Comparison Study ◽  
Corrosion Behaviors

In this paper, the corrosion behaviors of Sm-based bulk metallic glasses (BMGs) were investigated by immersion test. It was found that with Co content increasing the ability of corrosion resistance of the alloy increases for Sm-based bulk metallic glasses. A comparison study was made on the corrosion behaviors between the glassy state alloys and crystalline alloys with the same ingredients. The results show that the glassy state alloy has the better corrosion resistance.

scholarly journals Composition and Performance of Nanostructured Zirconium Titanium Conversion Coating on Aluminum-Magnesium Alloys

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Sheng-xue Yu ◽  
Rui-jun Zhang ◽  
Yong-fu Tang ◽  
Yan-ling Ma ◽  
Wen-chao Du
Keyword(s):  
Corrosion Resistance ◽  
Salt Solution ◽  
Photoelectron Spectroscopy ◽  
Electrochemical Impedance ◽  
Impedance Spectrum ◽  
Conversion Coating ◽  
Mg Alloy ◽  
Electrochemical Impedance Spectrum ◽  
X Ray ◽  
Titanium Salt

Nanostructured conversion coating of Al-Mg alloy was obtained via the surface treatment with zirconium titanium salt solution at 25°C for 10 min. The zirconium titanium salt solution is composed of tannic acid 1.00 g·L−1, K2ZrF60.75 g·L−1, NaF 1.25 g·L−1, MgSO41.0 g/L, and tetra-n-butyl titanate (TBT) 0.08 g·L−1. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectrum (FT-IR) were used to characterize the composition and structure of the obtained conversion coating. The morphology of the conversion coating was obtained by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Results exhibit that the zirconium titanium salt conversion coating of Al-Mg alloy contains Ti, Zr, Al, F, O, Mg, C, Na, and so on. The conversion coating with nm level thickness is smooth, uniform, and compact. Corrosion resistance of conversion coating was evaluated in the 3.5 wt.% NaCl electrolyte through polarization curves and electrochemical impedance spectrum (EIS). Self-corrosion current density on the nanostructured conversion coating of Al-Mg alloy is9.7×10-8A·cm-2, which is only 2% of that on the untreated aluminum-magnesium alloy. This result indicates that the corrosion resistance of the conversion coating is improved markedly after chemical conversion treatment.

Initial Exploitation of Corrosion Resistance and Adhesion of 10 Kinds of Silane on A3 Steel

2012 ◽  
Vol 460 ◽  
pp. 94-97 ◽  
Author(s):  
Qi Zhou ◽  
Guang Xia Sun ◽  
Bo Hu ◽  
Ping Zhao
Keyword(s):  
Corrosion Resistance ◽  
Salt Solution ◽  
Salt Water ◽  
Paint Film ◽  
Neutral Salt ◽  
Silane Treatment ◽  
Silane Coupling ◽  
Research Objects ◽  
Pre Treatment ◽  
Silane Solution

Silane coupling agent is gradually concerns as a substitute for phosphate pre-treatment of painting. Ten kinds of silane solution such as the KH-450, KH-460, KH-470, KH-550, KH-560, KH-567, KH-578, 5501, 9810, BTSE were chosen as research objects in this paper. Corrosion resistance and adhesion of film were studied after silane treatment on A3 steel surface by copper sulfate drop test, alternate immersion in salt solution and adhesion experiments. These silane films were compared with uncoated A3 steel specimens. The results show that: silane treatment can improve the corrosion resistance of A3 steel in acid solution. KH-560, KH-5501 and KH-470 were ranked the top three in the corrosion resistance. KH-550, KH-560, KH-567 were fourth, fifth and sixth, respectively. Silane treatment can improve the corrosion resistance of A3 steel in neutral salt solution. KH-460, KH-560 and KH-567 have the best salt water corrosion resistance. KH-560 has better adhesion with paint film, following by KH-550 and KH460. When using ethanol and water as the hydrolysis solvent of silane, KH-450, KH-460, KH-470, KH-550, KH-560, KH-567, KH-578, 5501 have the better stability, but stability of 9810, BTSE are poor.

Influence of Additional Alloying Elements on Corrosion Resistance of Hot Dip Galvanised Steels

2012 ◽  
Vol 730-732 ◽  
pp. 811-816 ◽  
Author(s):  
Alexandru Alexa ◽  
Tamara Radu ◽  
Florentina Potecasu ◽  
Anisoara Ciocan
Keyword(s):  
Corrosion Resistance ◽  
Diffusion Process ◽  
Dip Coating ◽  
Alloying Elements ◽  
Coating Process ◽  
Accelerated Corrosion ◽  
Protective Layers ◽  
Galvanized Steels ◽  
Simulated Environment ◽  
Improved Performance

The alloying of the zinc with some additional elements in specific quantities could be reliably used in the hot-dip coating process. These elements form specific intermetallic compounds that conferred substantially improved performance to the end-product specially by improving of the corrosion resistance. The paper presents the research that has developed to analyze the influence of aluminum, bismuth and tin like alloying elements added in the zinc on corrosion resistance of galvanized steels. Steel samples were galvanized by the hot-dip method in micro-alloyed zinc baths. The influence of the alloying elements on the formation of the different phases and on the diffusion process is discussed. The corrosion experiments were carried out in a simulated environment of accelerated corrosion conditions. The kinetics and the mechanism of corrosion of the samples were studied in correlation with the effect of alloying elements on nature and characteristics of protective layers.

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