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master's thesis
Analiza utjecaja medija na korozijsko ponašanje niskolegiranog čelika
2023. urn:nbn:hr:190:754582
Ramljak, Raul
University of Rijeka
Faculty of Engineering

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Ramljak, R. (2023). Analiza utjecaja medija na korozijsko ponašanje niskolegiranog čelika (Master's thesis). Rijeka: University of Rijeka, Faculty of Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:190:754582

Ramljak, Raul. "Analiza utjecaja medija na korozijsko ponašanje niskolegiranog čelika." Master's thesis, University of Rijeka, Faculty of Engineering, 2023. https://urn.nsk.hr/urn:nbn:hr:190:754582

Ramljak, Raul. "Analiza utjecaja medija na korozijsko ponašanje niskolegiranog čelika." Master's thesis, University of Rijeka, Faculty of Engineering, 2023. https://urn.nsk.hr/urn:nbn:hr:190:754582

Ramljak, R. (2023). 'Analiza utjecaja medija na korozijsko ponašanje niskolegiranog čelika', Master's thesis, University of Rijeka, Faculty of Engineering, accessed 18 March 2025, https://urn.nsk.hr/urn:nbn:hr:190:754582

Ramljak R. Analiza utjecaja medija na korozijsko ponašanje niskolegiranog čelika [Master's thesis]. Rijeka: University of Rijeka, Faculty of Engineering; 2023 [cited 2025 March 18] Available at: https://urn.nsk.hr/urn:nbn:hr:190:754582

R. Ramljak, "Analiza utjecaja medija na korozijsko ponašanje niskolegiranog čelika", Master's thesis, University of Rijeka, Faculty of Engineering, Rijeka, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:190:754582

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Metadata
TitleAnaliza utjecaja medija na korozijsko ponašanje niskolegiranog čelika
Title (english)Analysis of the Effect of Media on Corrosion Behavior of Low-Alloy Steel
AuthorRaul Ramljak
MentorSunčana Smokvina Hanza (mentor)
Committee memberIgor Bonefačić (predsjednik povjerenstva)
Committee memberSunčana Smokvina Hanza (član povjerenstva)
Committee memberErvin Kamenar (član povjerenstva)
GranterUniversity of Rijeka
Faculty of Engineering
Rijeka
Defense date and country2023-09-20, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Diplomski rad "Analiza utjecaja medija na korozijsko ponašanje niskolegiranog čelika" istražuje mehanizme korozije niskolegiranog čelika u različitim okolinama. Rad se sastoji od teorijskog i eksperimentalnog dijela. Teorijski dio usredotočuje se na elektrokemijsku i kemijsku koroziju, identificira njihove osnovne razlike te proučava utjecaj medija na ponašanje materijala. Ovdje su još opisane i ostale podjele korozijskih procesa kao i adekvatne metode zaštite. Dodatno, rad analizira unutarnje... More i vanjske čimbenike koji utječu na koroziju niskolegiranog čelika. Promjene u unutarnjim svojstvima materijala te izolacija od agresivnih medija mogu povećati otpornost materijala na koroziju. U eksperimentalnom dijelu se izvelo elektrokemijsko ispitivanje brzine korozije s obzirom na različiti medij. Kao ispitani uzorak koristio se čelik 51CrV4, koji se odlikuje visokom čvrstoćom, tvrdoćom, dobrom otpornošću na habanje i abraziju. Također ima veliku žilavost i lako je toplinski obradljiv. Kod toplinske obrade, čelik se prvo kalio, a zatim se je popuštao na 600 °C. Eksperimentalno ispitivanje provedeno je u različitim otopinama NaCl-a kako bi se analizirao taj utjecaj. Koncentracija otopine NaCl-a pokazala se kao bitan čimbenik u korozijskom ponašanju niskolegiranog čelika. Uzorci uronjeni u višu koncentraciju otopine pokazali su povećanu brzinu korozije u usporedbi s uzorcima u nižoj koncentraciji, što može biti korisno u kontekstu odabira materijala za specifične okolišne uvjete kako bi se izbjegla prekomjerna korozija. Less
Abstract (english)
The master's thesis "Analysis of Media Influence on the Corrosion Behavior of Low-Alloy Steel" investigates the corrosion mechanisms of low-alloy steel in various environments. The thesis consists of a theoretical and experimental part. The theoretical section focuses on electrochemical and chemical corrosion, identifies their fundamental differences, and studies the influence of media on material behavior. It also describes other classifications of corrosion processes as well as appropriate... More protection methods. Additionally, the thesis analyzes internal and external factors that affect the corrosion of low-alloy steel. Changes in the material's internal properties and isolation from aggressive media can enhance material resistance to corrosion. In the experimental section, electrochemical testing of corrosion rate was conducted considering different mediums. The steel 51CrV4 was used as the tested sample, known for its high strength, hardness, good resistance to wear and abrasion, as well as its high toughness and ease of heat treatment. During the heat treatment, the steel was quenched first and then tempered at 600 °C. The experimental investigation was performed in various NaCl solutions to analyze this impact. The concentration of NaCl solution proved to be a significant factor in the corrosion behavior of low-alloy steel. Samples immersed in higher concentration solutions exhibited an increased corrosion rate compared to samples in lower concentration, which can be valuable in the context of material selection for specific environmental conditions to avoid excessive corrosion. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:190:754582
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Created on2023-09-17 21:38:02
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