Characterization of Al-Zn-Sn as Sacrificial Anodes to Protect Underground Oil Pipelines in Al-Hilla Regional

2012 ◽  
Vol 628 ◽  
pp. 135-143
Author(s):  
Kadhim F. Al-Sultani ◽  
Jenan Nasser Nabat
Keyword(s):  
Aluminum Alloys ◽  
Cathodic Protection ◽  
Steel Sample ◽  
Sacrificial Anode ◽  
Sacrificial Anodes ◽  
Oil Pipelines ◽  
Protection Potential ◽  
Pass Through ◽  
Selection Of

Sacrificial anode cathodic protection is one of the most widely used methods in protecting buried oil pipe lines against the corrosion damages. In the present work, a series of Aluminum alloys have been prepared as sacrificial anodes candidates to be used in the protection of the oil pipelines that pass through the Al-Hilla region. These prepared alloys were microstructurally and electrochemically characterized to evaluate their performance as Al-sacrificial anodes for cathodic protection of oil pipes The relationships between the protection potential with time, sacrificial anode life, discharge currents, and capacity of sacrificial anodes were found, taking into consideration the distance between sacrificial anode and protected steel sample. According to the results obtained, the best selection of sacrificial anodes was (Al-4% Zn-0.5% Sn) alloy at 30cm in Al-Hilla region.

Effects of Tin on Aluminum – Zinc Alloy as Sacrificial Anode to Protect Underground Oil Pipeline in Al-Mahawil Regional

2012 ◽  
Vol 468-471 ◽  
pp. 1585-1594 ◽  
Author(s):  
Kadhim F. Al-Sultani ◽  
Jnan Nasser Nabat
Keyword(s):  
Cathodic Protection ◽  
Steel Sample ◽  
Zinc Alloy ◽  
Sacrificial Anode ◽  
Oil Pipeline ◽  
Sacrificial Anodes ◽  
Oil Pipelines ◽  
Protection Potential ◽  
Pass Through ◽  
Selection Of

Abstract Sacrificial anode cathodic protection is one of the most widely used methods in protecting buried oil pipe lines against the corrosion damages. In the present work, a series of Aluminum alloys have been prepared as sacrificial anodes candidates to be used in the protection of the oil pipelines that pass through the Al-Mahawil region. These prepared alloys were microstructurally and electrochemically characterized to evaluate their performance as Al-sacrificial anodes for cathodic protection of oil pipes The relationships between the protection potential with time, sacrificial anode life, discharge currents, and capacity of sacrificial anodes were found, taking into consideration the distance between sacrificial anode and protected steel sample. According to the results obtained, the best selection of sacrificial anodes was Al-4% Zn-0.4% Sn) alloy at 30cm in Al-Mahawil region.

scholarly journals Magnesium-Based Sacrificial Anode Cathodic Protection Coatings (Mg-Rich Primers) for Aluminum Alloys

Metals ◽  
2012 ◽  
Vol 2 (3) ◽  
pp. 353-376 ◽  
Author(s):  
Shashi S. Pathak ◽  
Sharathkumar K. Mendon ◽  
Michael D. Blanton ◽  
James W. Rawlins
Keyword(s):  
Aluminum Alloys ◽  
Cathodic Protection ◽  
Sacrificial Anode

Cathodic Protection Effect of Reinforced Concrete Beam Specimens with Zinc Sacrificial Anode in Marine Environment

2015 ◽  
Vol 1125 ◽  
pp. 345-349 ◽  
Author(s):  
Jin A Jeong
Keyword(s):  
Reinforced Concrete ◽  
Cathodic Protection ◽  
Concrete Beam ◽  
Salt Water ◽  
Reinforced Concrete Beam ◽  
Sacrificial Anode ◽  
Protection Technology ◽  
Concrete Resistivity ◽  
Protection Potential ◽  
Cathodic Protection System

This study is to acquire the confirmation data regarding the cathodic protection characteristics for reinforced concrete beam specimens with zinc sacrificial anode in 15% salt water. It was possible to confirm the performance of sacrificial anode cathodic protection system by the measurement of potentials and concrete resistivity for the reinforced concrete beam specimens applied with zinc sacrificial anode in mortar topside of the concrete specimens. The corrosion potential and cathodic protection potential were measured by potentiostat, and 4 hour depolarization potentials were measured after disconnecting with anode for 4 hours. It was confirmed that the cathodic protection for reinforced concrete structures by means of zinc sacrificial anode were very effective corrosion protection technology in marine environments.

Laboratory and Field Characterization of a New Sacrificial Anode for Cathodic Protection of Offshore Structures

CORROSION ◽  
1998 ◽  
Vol 54 (12) ◽  
pp. 1018-1025 ◽  
Author(s):  
S. Rossi ◽  
P. L. Bonora ◽  
R. Pasinetti ◽  
L. Benedetti ◽  
M. Draghetti ◽  
...  
Keyword(s):  
Cathodic Protection ◽  
Offshore Structures ◽  
Sacrificial Anode

Cathodic Protection of Oil Pipelines by Aluminum Alloys

2011 ◽  
Vol 22 (2) ◽  
pp. 17-48
Author(s):  
Alaa Alzwghaibi ◽  
Ekbal Saeed ◽  
Duha Klif
Keyword(s):  
Aluminum Alloys ◽  
Cathodic Protection ◽  
Oil Pipelines

Effect of Cathodic Protection Systems with Zn-Mesh Sacrificial Anodes on Reinforced Concrete Structures in an Accelerated Marine Environment

2013 ◽  
Vol 800 ◽  
pp. 365-374 ◽  
Author(s):  
Jin A Jeong ◽  
Chung Kuk Jin
Keyword(s):  
Reinforced Concrete ◽  
Current Density ◽  
Cathodic Protection ◽  
Concrete Structures ◽  
Chloride Concentration ◽  
Reinforced Concrete Structures ◽  
Marine Environments ◽  
Concrete Piles ◽  
Sacrificial Anodes ◽  
Protection Potential

In the present study, corrosion and cathodic protection (CP) characteristics of concrete piles exposed to marine environments such as marine bridge columns or pier structures were evaluated under simulated conditions. The accelerated environmental tests were carried out at an elevated temperature (40°C) and a high chloride concentration (15%). The protection potential of CP systems with Zn-mesh sacrificial anodes applied to piles was inversely proportional to the water content in the concrete. When the CP system was applied after corrosion initiation and propagation (CProt), the protection current density was higher than when the CP system was applied at the beginning of structural construction (CPrev). However, the four-hour depolarization potential was higher in the latter case than in the former. In addition, it was found that even though the current density of the CPrev system was relatively lower than that of the CProt system, the CPrev system was also able to prevent corrosion. Consequently, both CProt and CPrev systems are very effective at preserving reinforced concrete structures, especially in marine environments.

A Study on Thermal Spraying Sacrificial Anode Applied in Concrete Structure Cathodic Protection

2014 ◽  
Vol 1015 ◽  
pp. 215-218
Author(s):  
Ya Ping Wang
Keyword(s):  
Cathodic Protection ◽  
Concrete Structure ◽  
Electrochemical Method ◽  
Thermal Spraying ◽  
Sacrificial Anode ◽  
Reinforced Concrete Structure ◽  
Sacrificial Anodes ◽  
Protection Method ◽  
Microscopy Method ◽  
Better Than

In this work, the thermal spraying sacrificial anode was investigated as reinforced concrete structure cathodic protection method. During our experiment, the performance of the thermal spraying sacrificial anode was studied using electrochemical method, metallographic microscopy method and simulation tests. And the results show that the thermal spraying sacrificial anodes are better than traditional sacrificial anodes. The method of thermal spraying applied in sacrificial anode field is successful, which solve the problem of insufficient driving initial potential of traditional sacrificial anode in the concrete structure.

Cathodic Protection Performance of Al-Zn-In-Mg-Ga-Mn Sacrificial Anode

2011 ◽  
Vol 214 ◽  
pp. 296-300
Author(s):  
Yan Bin Huang ◽  
Gao Wei Song ◽  
Hua Dong Ding ◽  
Xue Bin Liu ◽  
Xin Hai Shao
Keyword(s):  
Cathodic Protection ◽  
Impedance Spectrum ◽  
Corrosion Products ◽  
Sacrificial Anode ◽  
Weight Loss Measurement ◽  
Sacrificial Anodes ◽  
Active Location ◽  
Corrosion Experiment ◽  
Discharge Experiment ◽  
Natural Corrosion

The solubility and cathodic protection performance of Al-Zn-In-Mg-Ga-Mn sacrificial anode in natural corrosion and self-discharge experiment was studied using electrochemistry impedance spectrum technology, weight-loss measurement and SEM. The results show that the corrosion rate of 7A52 was decreased under the protection of sacrificial anodes in the self-discharge experiment, and sacrificial anodes dissolved uniformity due to the effect of active location, the corrosion products are easy to shed. Only location corrosion occurs on the sacrificial anode’s surface which is influenced by corrosion products and oxide film in natural corrosion experiment.

Applications of Transmission Electron Microscopy in the Characterization of Metal Machinability

1968 ◽  
Vol 26 ◽  
pp. 442-443 ◽  
Author(s):  
L.E. Murr ◽  
A.B. Draper
Keyword(s):  
Electron Microscopy ◽  
State Physics ◽  
Test Material ◽  
Milling Machine ◽  
Rotary Table ◽  
Solid State Physics ◽  
Materials Properties ◽  
Transmission Electron ◽  
Selection Of

The industrial characterization of the machinability of metals and alloys has always been a very arbitrarily defined property, subject to the selection of various reference or test materials; and the adoption of rather naive and misleading interpretations and standards. However, it seems reasonable to assume that with the present state of knowledge of materials properties, and the current theories of solid state physics, more basic guidelines for machinability characterization might be established on the basis of the residual machined microstructures. This approach was originally pursued by Draper; and our presentation here will simply reflect an exposition and extension of this research.The technique consists initially in the production of machined chips of a desired test material on a horizontal milling machine with the workpiece (specimen) mounted on a rotary table vice. A single cut of a specified depth is taken from the workpiece (0.25 in. wide) each at a new tool location.

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