Corrosion resistance and adsorption behavior of bis-(γ-triethoxysilylpropyl)-tetrasulfide self-assembled membrane on 6061 aluminum alloy

RSC Advances ◽  
2015 ◽  
Vol 5 (98) ◽  
pp. 80129-80135 ◽  
Author(s):  
Yu-qing Wen ◽  
Hui-min Meng ◽  
Wei Shang
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Metal Surface ◽  
The Self ◽  
Adsorption Behavior ◽  
Dynamics Simulation ◽  
6061 Aluminum Alloy ◽  
Self Assembled ◽  
Oxygen Bond ◽  
Silicon Oxygen

The model before (left) and after (right) the dynamics simulation. It can be deduced that the formation of the self-assembled membrane was mainly dependent on interaction between the silicon oxygen bond and the metal surface atom.

HIGH TEMPERATURE STEAM CORROSION OF MICROARC OXIDATION COATINGS ON 6061 ALUMINUM ALLOY AT 300∘C/3 MPa STEAM

2020 ◽  
pp. 2050030
Author(s):  
YAO QU ◽  
CHAOLIN YANG ◽  
XIAOYUE JIN ◽  
JIANCHENG DU ◽  
WENBIN XUE
Keyword(s):  
High Pressure ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
High Temperature ◽  
Microarc Oxidation ◽  
Low Frequency ◽  
6061 Aluminum Alloy ◽  
Fine Needle ◽  
Pressure Steam ◽  
High Temperature Steam

The structural and phase transformation of microarc oxidation (MAO) coatings on 6061 aluminum alloy at 300∘C/3[Formula: see text]MPa steam were evaluated. After 10 days steam corrosion, the weight loss of coated alloys with 15[Formula: see text][Formula: see text]m and 75[Formula: see text][Formula: see text]m thickness was only about 1/10 and 1/50 of weight gain of bare alloy, respectively. The [Formula: see text]-Al2O3 and [Formula: see text]-Al2O3 phases in the MAO coatings were stable at 300∘C/3[Formula: see text]MPa steam, but many fine needle-like or brick-like boehmite crystalline particles also appeared on coating surface. The boehmite had a large influence on the permittivity of coatings at low frequency. The MAO treatment on 6061 aluminum alloy improved its corrosion resistance at high-temperature and high-pressure steam.

Preparation and corrosion resistance of titanium–zirconium–cerium based conversion coating on 6061 aluminum alloy

2019 ◽  
Vol 71 (3) ◽  
pp. 419-429 ◽  
Author(s):  
Wen Zhan ◽  
Xuzheng Qian ◽  
Boyi Gui ◽  
Lian Liu ◽  
Xiaohui Liu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Conversion Coating ◽  
6061 Aluminum Alloy ◽  
Titanium Zirconium

Surface nanocrystallization induced by shot peening and its effect on corrosion resistance of 6061 aluminum alloy

2014 ◽  
Vol 29 (24) ◽  
pp. 3002-3010 ◽  
Author(s):  
Bin Chen ◽  
Binxiang Huang ◽  
Hai Liu ◽  
Xiaoling Li ◽  
Mengtian Ni ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Shot Peening ◽  
6061 Aluminum Alloy ◽  
Surface Nanocrystallization ◽  
Image Position

Abstract

Analysis of corrosion resistance of lightweight aluminum alloy sheet in the friction-stir joint area

2020 ◽  
Vol 10 (8) ◽  
pp. 1352-1357
Author(s):  
Ling Ji ◽  
Hongfeng Wang ◽  
Man Shi
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Heat Affected Zone ◽  
Electrochemical Corrosion ◽  
Corrosion Current ◽  
Alloy Sheet ◽  
The Self ◽  
Friction Stir ◽  
Grain Sizes ◽  
Joint Area

In this thesis, 1 mm thick 6061 aluminum alloy plates are connected using a friction stir joining device, and the metallographic structure and corrosion resistance of the friction stir joint area obtained with different process parameters are systematically analyzed. The results show that the core region of the joint is composed of small equiaxed crystals, and the grains in the heat-affected zone are elongated in the direction of stirring flow. The grain sizes of the heat-affected zone is different, and it is a coexistence zone of grains of various sizes. When the rotation speed of the stirring head is 15000 rpm and the forward speed of the stirring head is 300 mm/min, the self-corrosive potential of the connection area is optimized during electrochemical corrosion, and thus the self-corrosion current is the smallest. With this parameter, the joint area has the best corrosion resistance.

Recycling of 6061 Aluminum Alloy Cutting Chips Using Hot Extrusion and Hot Rolling

2007 ◽  
Vol 544-545 ◽  
pp. 443-446 ◽  
Author(s):  
Kazutaka Suzuki ◽  
Xin Sheng Huang ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Hot Rolling ◽  
Hot Extrusion ◽  
Rolling Process ◽  
Processing Conditions ◽  
Consolidation Process ◽  
6061 Aluminum Alloy ◽  
Differential Speed Rolling ◽  
Recycled Material

Possibilities of the consolidation process using hot extrusion and subsequent hot rolling were investigated in order to recycle the cutting chips of the aluminum alloy efficiently. For the rolling process, differential speed rolling (DSR) was also applied in addition to normal rolling. Several kinds of cutting chips with different size and cleanliness were collected through turning 6061 aluminum alloy round bars. From these cutting chips, recycled material sheets were produced under various processing conditions via hot extrusion and subsequent hot rolling. Non-recycled material sheets were also prepared for comparison. All samples were characterized by optical microscopy, SEM(EBSP), X-ray texture analysis, tensile test and corrosion test. As a result, it was found that the recycled material sheets produced under optimum processing conditions had smaller grain sizes than those of the non-recycled ones, therefore the mechanical properties and the corrosion resistance of the recycled material sheets were almost comparable to those of the non-recycled ones. Moreover, concerning the DSR processed sheets, the traces of the chip interface, which were clearly observed in the normally rolled ones, almost disappeared, and the appearances were remarkably improved. Then the DSR processed sheets significantly surpassed the non-recycled ones in the tensile properties and the corrosion resistance.

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