scholarly journals Evaluation of the Corrosion of AZ31 Magnesium Alloy Used as Sacrificial Anode for Cathodic Protection of Hot-Water Tank Storage Containing Chloride

Author(s):  
N Zidane ◽  

Author(s):  
Tjokorda Gde Tirta Nindhia ◽  
I Putu Widya Semara ◽  
I Wayan Bandem Adnyana ◽  
I Wayan Surata ◽  
I Gusti Komang Dwijana


2011 ◽  
Vol 686 ◽  
pp. 280-286
Author(s):  
Zhen Lin Wang

Nano TiO2and S, N co-doped TiO2composite coatings with WO3transitional layer were deposited on AZ31 magnesium alloy by sol-gel method. The morphologies, structure, mechanical properties, compositional depth profiles and anti-corrosion performance of the as prepared coatings were characterized by scanning electron microscope, X-ray diffraction, nanoscratch test, glowing discharge optical emission spectrometry and electrochemical method, respectively. The results show that the nano TiO2coatings are continuous, uniform and dense with thickness ca.3-5μm, elements in the interface diffuse mutually during heat treatment; S-N co-doped TiO2enhances the interface adhesion, WO3transitional layer increases the total coating thickness and strengthens the adhesion to substrate with respect to unitary TiO2coating; S, N co-doped TiO2acts as visible light photocatalyst that can provide permanent cathodic protection for AZ31 magnesium using WO3as electron restoring material.



2012 ◽  
Vol 567 ◽  
pp. 275-282
Author(s):  
Yi Huang ◽  
Zhi Gang Fang

In order to study “shielding effect” problems of sacrificial anode cathodic protection system in the ballast water tanks, two sets of experiments, the “block-type shielding effect” and the “absorbed-type shielding effect” are carried out by changing the clapboard height and the distance from the upper surface of sacrificial anode to the copper tube, and corresponding numerical simulations are carried out. Both of the experimental data and the numerical simulation results illustrate the two kinds of “shielding effect” as mentioned above, and according to which, both the two kinds of “shielding effect” should be surely taken into account in sacrificial anode cathodic protection system for a ballast water tank.



2012 ◽  
Vol 48 (8) ◽  
pp. 915 ◽  
Author(s):  
Hongtao HUANG ◽  
Andrew Godfrey ◽  
Wei LIU ◽  
Ruihe TANG ◽  
Qing LIU


2021 ◽  
pp. 109997
Author(s):  
Banglong Fu ◽  
Junjun Shen ◽  
Uceu F.H.R. Suhuddin ◽  
Ayrton A.C. Pereira ◽  
Emad Maawad ◽  
...  


Author(s):  
Wenxue Fan ◽  
Hai Hao

Abstract Grain refinement has a significant influence on the improvement of mechanical properties of magnesium alloys. In this study, a series of Al–Ti–C-xGd (x = 0, 1, 2, 3) master alloys as grain refiners were prepared by self-propagating high-temperature synthesis. The synthesis mechanism of the Al–Ti–C-xGd master alloy was analyzed. The effects of Al–Ti–C-xGd master alloys on the grain refinement and mechanical properties of AZ31 (Mg-3Al-1Zn-0.4Mn) magnesium alloys were investigated. The results show that the microstructure of the Al–Ti–C-xGd alloy contains α-Al, TiAl3, TiC and the core–shell structure TiAl3/Ti2Al20Gd. The refining effect of the prepared Al–Ti–C–Gd master alloy is obviously better than that of Al–Ti–C master alloy. The grain size of AZ31 magnesium alloy was reduced from 323 μm to 72 μm when adding 1 wt.% Al–Ti–C-2Gd master alloy. In the same condition, the ultimate tensile strength and elongation of as-cast alloy were increased from 130 MPa, 7.9% to 207 MPa, 16.6% respectively.



2021 ◽  
pp. 101194
Author(s):  
Masataka Ijiri ◽  
Koji Yamaguchi ◽  
Shoichi Kikuchi ◽  
Fumihiro Kato ◽  
Yui Kunieda ◽  
...  


2021 ◽  
Vol 870 ◽  
pp. 159411
Author(s):  
Feng Zhao ◽  
Jinhong Xie ◽  
Yikun Zhu ◽  
Qiancheng Liu ◽  
Tian Ye ◽  
...  


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