Effect of Marine Coolant Additives on Cavitation Erosion–Corrosion of Diesel Engine Cylinder Liner
In this study, cavitation erosion tests were conducted to investigate the effects of the presence of coolant additives and chlorides on the corrosion and cavitation erosion of cylinder liners in marine diesel engines. Electrochemical experiments were conducted to evaluate the corrosion characteristi...
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MDPI AG
2025-06-01
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| author | Woo-Seok Jeon Il-Cho Park |
| author_facet | Woo-Seok Jeon Il-Cho Park |
| author_sort | Woo-Seok Jeon |
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| description | In this study, cavitation erosion tests were conducted to investigate the effects of the presence of coolant additives and chlorides on the corrosion and cavitation erosion of cylinder liners in marine diesel engines. Electrochemical experiments were conducted to evaluate the corrosion characteristics of ductile cast iron (DCI), and the corrosion potential and corrosion current density were measured. In addition, weight loss, surface roughness, and maximum surface damage depth were quantified as a function of cavitation exposure time. Furthermore, to investigate the erosion and erosion–corrosion characteristics induced by cavitation attack, the damaged surface morphology was closely examined using a scanning electron microscope (SEM) after the cavitation erosion tests. The results revealed that the coolant additive effectively protected the DCI from corrosion caused by aggressive chlorides. In particular, when an appropriate amount of additive was added to a coolant containing 100 ppm of chloride, the corrosion current density of DCI was reduced by approximately 31.7 times, significantly improving corrosion resistance. Therefore, different surface damage mechanisms corresponding to cavitation erosion and cavitation erosion–corrosion were identified depending on the presence or absence of the coolant additive during the cavitation erosion tests. |
| format | Article |
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| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-dd4aca7660fc4957a35ce126b671f74a2025-08-20T03:38:53ZengMDPI AGApplied Sciences2076-34172025-06-011511635310.3390/app15116353Effect of Marine Coolant Additives on Cavitation Erosion–Corrosion of Diesel Engine Cylinder LinerWoo-Seok Jeon0Il-Cho Park1Graduate School, Department of Marine Engineering, Mokpo National Maritime University, Mokpo 58628, Republic of KoreaDivision of Cadet Training, Mokpo National Maritime University, Mokpo 58628, Republic of KoreaIn this study, cavitation erosion tests were conducted to investigate the effects of the presence of coolant additives and chlorides on the corrosion and cavitation erosion of cylinder liners in marine diesel engines. Electrochemical experiments were conducted to evaluate the corrosion characteristics of ductile cast iron (DCI), and the corrosion potential and corrosion current density were measured. In addition, weight loss, surface roughness, and maximum surface damage depth were quantified as a function of cavitation exposure time. Furthermore, to investigate the erosion and erosion–corrosion characteristics induced by cavitation attack, the damaged surface morphology was closely examined using a scanning electron microscope (SEM) after the cavitation erosion tests. The results revealed that the coolant additive effectively protected the DCI from corrosion caused by aggressive chlorides. In particular, when an appropriate amount of additive was added to a coolant containing 100 ppm of chloride, the corrosion current density of DCI was reduced by approximately 31.7 times, significantly improving corrosion resistance. Therefore, different surface damage mechanisms corresponding to cavitation erosion and cavitation erosion–corrosion were identified depending on the presence or absence of the coolant additive during the cavitation erosion tests.https://www.mdpi.com/2076-3417/15/11/6353coolant additiveductile cast ironcavitation erosioncorrosioncylinder liner |
| spellingShingle | Woo-Seok Jeon Il-Cho Park Effect of Marine Coolant Additives on Cavitation Erosion–Corrosion of Diesel Engine Cylinder Liner Applied Sciences coolant additive ductile cast iron cavitation erosion corrosion cylinder liner |
| title | Effect of Marine Coolant Additives on Cavitation Erosion–Corrosion of Diesel Engine Cylinder Liner |
| title_full | Effect of Marine Coolant Additives on Cavitation Erosion–Corrosion of Diesel Engine Cylinder Liner |
| title_fullStr | Effect of Marine Coolant Additives on Cavitation Erosion–Corrosion of Diesel Engine Cylinder Liner |
| title_full_unstemmed | Effect of Marine Coolant Additives on Cavitation Erosion–Corrosion of Diesel Engine Cylinder Liner |
| title_short | Effect of Marine Coolant Additives on Cavitation Erosion–Corrosion of Diesel Engine Cylinder Liner |
| title_sort | effect of marine coolant additives on cavitation erosion corrosion of diesel engine cylinder liner |
| topic | coolant additive ductile cast iron cavitation erosion corrosion cylinder liner |
| url | https://www.mdpi.com/2076-3417/15/11/6353 |
| work_keys_str_mv | AT wooseokjeon effectofmarinecoolantadditivesoncavitationerosioncorrosionofdieselenginecylinderliner AT ilchopark effectofmarinecoolantadditivesoncavitationerosioncorrosionofdieselenginecylinderliner |