Corrosion of Carbon Steel and Cast Iron in a Gas Phase over Salt Melts Used in the Magnesium Industry

2019 ◽  
Vol 60 (2) ◽  
pp. 125-138
Author(s):  
I. M. Komelin ◽  
A. P. Lysenko ◽  
D. S. Kondrateva
Keyword(s):  
Cast Iron ◽  
Carbon Steel ◽  
Gas Phase ◽  
Salt Melts

scholarly journals Corrosion of carbon steel and cast iron in gas phase above salt melts used in magnesium industry

2019 ◽  
pp. 34-49
Author(s):  
I. M. Komelin ◽  
A. P. Lysenko ◽  
D. S. Kondrat'eva
Keyword(s):  
Cast Iron ◽  
Carbon Steel ◽  
Chemical Analysis ◽  
Gas Phase ◽  
Gravimetric Method ◽  
Iron Corrosion ◽  
Atmospheric Air ◽  
Corrosion Rates ◽  
Salt Melts ◽  
Salt Melt

Corrosion tests of SCh15 cast iron, Steel 3 and Steel 3 with aluminized coating in some compositions of 10%MgCl2-KCl-NaCl and 10%MgCl2-KCl-Naa-Caa2 salt melts with 10 %, 25 % and 40 % CaCl2 concentrations, and also in 10MgCl2-45%KCl-20%NaCl-25%NaBr melt, and in the gas phase above these melts at 700 °C. A gravimetric method was used to determine corrosion rates of metal samples. Chemical analysis of absorption solutions was used to determine concentrations of halide and hydrogen halide impurities in air blown through the reactor with melts and samples. It was shown that carbon steel aluminizing can reduce the corrosion rate in the gas phase over the salt melt by a factor of 5 to 70. The formation mechanism of gases aggressive in relation to carbon steel and cast iron in atmospheric air in contact with salt chloride melt was considered. Accelerated hydrogen chloride and chlorine formation during the salt melt interaction with atmospheric air under the influence of iron corrosion products was found.

Decision Making with the Analytical Hierarchy Process (AHP) for Material Selection in Screw Manufacturing for Minimizing Environmental Impacts

2013 ◽  
Vol 315 ◽  
pp. 57-62 ◽  
Author(s):  
Sia Chee Kiong ◽  
Loo Yee Lee ◽  
Siaw Hua Chong ◽  
Mohd Azwir Azlan ◽  
Nik Hisyamudin Muhd Nor
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Cast Iron ◽  
Carbon Steel ◽  
Environmental Impact ◽  
Aluminium Alloy ◽  
Low Carbon Steel ◽  
Machining Process ◽  
Low Carbon ◽  
Hierarchy Process

This study is an approach to investigate the environmental impact of screw manufacturing and to choose suitable material for selected screw-making processes for the best performance with minimum environmental impact. The parameters involved were types of material and screw-making process using the environmental data available in Asia region. The two different manufacturing approaches being evaluated were machining and forging. The types of material considered were low carbon steel, stainless steel, titanium alloy and aluminium alloy. As for machining process, the materials being considered in screw manufacturing were low carbon steel, stainless steel, titanium alloy, aluminium alloy, magnesium alloy and cast iron. The information of environmental impact are generated by SolidWorks. Sustainability tool was used in the formation of pair-wise comparison matrices for Analytic Hierarchy Process (AHP). Then, the ranking of global priorities had enabled the determination of appropriate material to be used for those selected screw manufacturing process. As a result, aluminium alloy was found to give minimum environmental impact for forging process whereas cast iron was found to excel in machining process. At the same time, titanium alloy was not suggested to be used in either process.

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