scholarly journals The Atmospheric Corrosion of Structural Steel after Exposure in the Palm Oil Mill Industry Area of Aceh-Indonesia

2021 ◽  
Vol 21 (4) ◽  
pp. 901
Author(s):  
Muhammad Zulfri ◽  
Nurdin Ali ◽  
Husaini Husaini ◽  
Sri Mulyati ◽  
Iskandar Hasanuddin
Keyword(s):  
Structural Steel ◽  
Palm Oil ◽  
Atmospheric Corrosion ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Round Bar ◽  
Exhaust Fumes ◽  
Palm Oil Mill ◽  
Loss Method ◽  
Industry Area

The major cause of early failure in the infrastructures of the palm oil industry in Aceh, Indonesia has been discovered to be the corrosion caused by air pollution from exhaust fumes of the factory plants. Therefore, this research was conducted to analyze the effect of the atmospheric corrosion of the structural steel used in the palm oil mill industry. The five types of structural steel used as samples include strip, l-shape, round bar, plate, and SAPH 610 low carbon steel with a carbon content of 0.18%. These specimens were cleansed from dirt, scaled, and rubbed with sandpaper to achieve a grid of 600, later washed with fresh water and rinsed with alcohol, and subsequently exposed to the environment in PT ASN and PT AKTS palm oil mills for 12 months. Moreover, they were placed on a measuring tray for exposure and the corrosion rate was recorded once a month using the mass loss method in line with the ASTM G50. The results showed the steel construction with a round bar shape was more resistant to atmospheric corrosion and the remaining samples were also observed to be safe and relatively resistant based on their classification as being outstanding (< 1 mpy).

Three years outdoor exposure of low carbon steel in Mauritius

2015 ◽  
Vol 62 (4) ◽  
pp. 246-252 ◽  
Author(s):  
Baboo Y. R. Surnam
Keyword(s):  
Carbon Steel ◽  
Atmospheric Corrosion ◽  
Corrosion Behaviour ◽  
Low Carbon Steel ◽  
Exposure Period ◽  
Outdoor Exposure ◽  
Low Carbon ◽  
Steel Buildings ◽  
Content Type ◽  
Time Of Wetness

Purpose – This paper aims to investigate the corrosion behaviour of carbon steel in the Mauritian atmosphere over a three-year period. Atmospheric corrosion is a serious problem in Mauritius. Design/methodology/approach – Carbon steel samples were exposed outdoors at various sites. Mass loss analysis was performed to determine the corrosion behaviour of the metal over the exposure period. Scanning electron microscopy and Raman tests were performed to investigate the formation of the corrosion products on the carbon steel surface. Findings – It was found that the corrosion loss at two of the sites considered did not vary clearly according to the bilogarithmic law. Time of wetness was found to be a main factor affecting atmospheric corrosion in Mauritius. The corrosivity of the atmosphere was found to lie between categories C3 and C4, according to ISO 9223. Originality/value – The results can be of essential help to the construction industry, especially as steel buildings are becoming very common in Mauritius. Moreover, as Mauritius is a tropical island, the results obtained can be useful in other tropical islands.

PENGARUH BASIC SEDIMENT AND WATER TERHADAP LAJU KOROSI PIPA X52 DAN A53 PADA MEDIA OIL SLUDGE.

ROTOR ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 13
Author(s):  
Naufan Arviansyah ◽  
Sumarji Sumarji ◽  
Digdo Listyadi Setyawan
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Low Carbon Steel ◽  
Measuring Method ◽  
Oil Sludge ◽  
Uniform Corrosion ◽  
Low Carbon ◽  
Weight Loss Method ◽  
Loss Method

This research have a purpuse to know corrosion rate in pipe X52 and A53 at oil sludge media caused BS and W. Corrosion is a damage of metal that occurs because reaction between metal with environtment and produce unwanted of corrosion product. Pipe X52 and A53 is a type of low carbon steel that use for fluid transportation system in industry. Oil sludge is a sediment of crude oil from main gathering storage and containing variouses elements. Oil sludge have a one of element is Basic Sediment and Water that is can make corrosion happen to distribution pipes. Measuring Method used in this research is weight loss method. The result of corrosion rate in Oil Sludge media containing 30,17% BS and W for pipe A53 is 1,64 x 10-2 mmpy and the result for pipa X52 is 2,47 x 10-2 mmpy. The result of corrosion rate in Oil Sludge media containing 60,67% BS and W for pipe A53 is 2,12 x 10-2 mmpy and for pipe X52 the result is 3,13 x 10-2 mmpy. The result of this research showed pipe A53 have more resistance than pipe X52. The corrosion is classified as uniform corrosion. Keywords : A53, Weight Loss, Oil Sludge, X52.

scholarly journals Synthesis of Water Soluble Chitosan Inhibitor from Shrimp Shells and its Corrosion Rate on Mild Steel in Acidic Solution

2021 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Nur Layli Amanah ◽  
Ika Dyah Widharyanti ◽  
Agung Nugroho
Keyword(s):  
Corrosion Rate ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Water Soluble ◽  
Low Carbon ◽  
Shrimp Shell ◽  
Weight Loss Method ◽  
Shrimp Shell Waste ◽  
Loss Method ◽  
Increasing Temperature

<span>Synthesis of WSCI (Water Soluble Chitosan Inhibitor) </span><span>from shrimp shell waste is carried out through demineralization, deproteination, and deacetylation processes. WSCI is obtained from monomer termination and H<sub>2</sub>O<sub>2</sub> assistance. WSCI was characterized using Fourier Transform Infrared Spectroscopy (FTIR) and the degree of deacetylation was determined using the baseline method. The effect of adding WSCI to low carbon steel SS400 with a 1 M HCl corrosive environment was studied using the weight loss method at various concentrations and temperatures. The overall results of the research show that WSCI synthesis used in the prevention of corrosion have an inhibition efficiency of up to 74.6% at a concentration of 200 ppm at a temperature of 28<sup>o</sup>C. Inhibition efficiency and corrosion rate are known to increase with increasing WSCI concentration and corrosion rate decreasing with increasing temperature.</span>

Atmospheric Corrosion Analysis on Low Carbon Steel Plate Profile and Elbow in Medan Belawan District

2021 ◽  
Vol 892 ◽  
pp. 142-149
Author(s):  
Affandi ◽  
Iqbal Tanjung ◽  
Arya Rudi Nasution ◽  
Abdul Gani Harahap ◽  
Syarizal Fonna ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Test Specimen ◽  
Atmospheric Corrosion ◽  
Steel Plate ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Average Value ◽  
Port Area ◽  
Measurement Results

The objective of this study is to carry out an atmospheric corrosion analysis on low carbon steel in the form of plates and elbows in the port area of Belawan. The exposure of the test specimen was carried out at five locations for 12 months. The location points are notated as A, B, C, D, and E. The process of specimen exposure and data collection followed the ASTM G-1 and ASTM G-50 standards. The measurement results indicated a slight difference in the corrosion rate at each location. Location C and D have the highest corrosion rate and location A has the lowest corrosion rate. Meanwhile, for locations B and E have a corrosion rate value that is not much different from location A. This difference in value is probably a consequence of the distance from the exposure location to the seaside. Locations C and D are adjacent to the seaside while the other locations are not. The steel plate has an average value of corrosion rate 0.2214 mpy and steel elbow has a rate of 0.2412 mpy. From the measurement results obtained, the two specimens exposed at each location are still in the "outstanding" category.

Structural steel-aluminum sandwich composites based on low-carbon steel 006/IF

2013 ◽  
Vol 55 (1-2) ◽  
pp. 3-7 ◽  
Author(s):  
S. V. Gladkovskii ◽  
T. A. Trunina ◽  
E. A. Kokovikhin ◽  
S. V. Smirnova ◽  
I. S. Kamantsev ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Structural Steel ◽  
Low Carbon Steel ◽  
Sandwich Composites ◽  
Low Carbon

scholarly journals Atmospheric Corrosion Sensor Based on Strain Measurement with an Active Dummy Circuit Method in Experiment with Corrosion Products

Metals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 579 ◽  
Author(s):  
Nining Purwasih ◽  
Naoya Kasai ◽  
Shinji Okazaki ◽  
Hiroshi Kihira ◽  
Yukihisa Kuriyama
Keyword(s):  
Corrosion Product ◽  
Atmospheric Corrosion ◽  
Salt Water ◽  
Thermal Strain ◽  
Low Carbon Steel ◽  
Corrosion Products ◽  
Thickness Reduction ◽  
Specimen Thickness ◽  
Low Carbon ◽  
Corrosion Sensor

This study analyzed an atmospheric corrosion sensor using strain measurements (ACSSM) with an active dummy method for corrosion product experiments. An initial compensation thermal strain experiment was performed with elapsed time. Further analyses used dry-wet environments with salt water spray to investigate the thickness reduction performance of the corrosion product on low-carbon steel samples. The ACSSM with an active dummy method accurately measured signals induced by the specimen thickness reduction, despite the noise in the signal. Moreover, the effects of corrosion products on the signal were discussed.

scholarly journals Research of the influence of boron microallegation on the corrosion behavior of a low-carbon structural steel in various structural condition

2019 ◽  
pp. 143-155
Author(s):  
V.G. Razdobreev
Keyword(s):  
Corrosion Resistance ◽  
Carbon Steel ◽  
Atmospheric Corrosion ◽  
Low Carbon Steel ◽  
Structural Condition ◽  
Structural Features ◽  
Low Carbon ◽  
Nacl Solution ◽  
Hot Rolled ◽  
Quenching And Tempering

The aim of the work is to study the effect of boron, structural features of the rolled steel of low-carbon steel in hot rolled and thermally hardened states on its corrosion resistance. Investigation of the corrosion resistance of hot-rolled and thermally hardened (quenching and tempering at temperatures of 200-600 jC) low-carbon steel St3sp containing 0.007% B and having no boron additives was carried out on polished samples with constant immersion in room temperature acidic medium, causing corrosion with hydrogen depolarization (1 N solution of H2SO4), and with variable immersion in aggressive media, causing corrosion with oxygen depolarization (in a 3 % NaCl solution). It was found that the atmospheric corrosion rate of hot-rolled low-carbon steel with and without boron is almost the same. It was experimentally established that samples of boron-containing steel (0.007 % B), when tested in a 1 N solution of H2SO4 and when immersed in a 3 % NaCl solution in a thermally hardened state, have a lower corrosion resistance than steel without boron: the maximum corrosion losses were samples hardened and tempered at a temperature of 300 оC. As shown by studies of microstructures using an electron microscope, when tempering 300 оC, hardened boron-containing steel is released, many relatively small inclusions of boron are released that contribute to the so-called structural corrosion. These finely divided inclusions, most of which are identified as Fe2B, are released from the supersaturated solid solution upon cooling and sharply reduce the resistance of steel to atmospheric corrosion. Thus, improving the hardenability of low-carbon steel, boron significantly reduces its corrosion resistance in aggressive environments after quenching and tempering.

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