Inhibirajuća sredstva za privremenu zaštitu od korozije

master's thesis

• Title (english): Rust preventatives for temporary corrosion protection
• Author: Ivan Mikec
• Mentor: Ivan Stojanović (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2017-07-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Korozija je proces nenamjernog trošenja konstrukcijskog materijala pod kemijskim, fizikalnim i biološkim djelovanjem okoliša. Kako bi se konstrukcijski materijali zaštitili od korozije ili da bi se barem smanjio utjecaj korozije postoje različite metode zaštite. Jedna od metoda zaštite je inhibitorima korozije. Inhibitori korozije su tvari anorganskog ili organskog podrijetla koje u vrlo malim koncentracijama smanjuju brzinu korozije do tehnološki prihvatljivih vrijednosti. Sve veća potreba za privremenom zaštitom konstrukcijskih materijala prilikom njihova transporta ili skladištenja rezultirao je razvojem tekućih inhibirajućih sredstva koja se na metal nanose u obliku mokrog filma.

Diplomski rad sastoji se od dvije cjeline: teorijskog i eksperimentalnog dijela.

U teorijskom dijelu rada navedene su metode zaštite od korozije. Svaka metoda zaštite je ukratko opisana, dok je posebno poglavlje posvećeno zaštiti od korozije primjenom tekućih inhibitora korozije. Osim toga navedena su područja primjene inhibitora te su opisana elektrokemijska ispitivanja djelotvornosti inhibitora korozije provedena u eksperimentalnom dijelu rada.

U uvodu eksperimentalnog dijela rada navedena su sredstva koja će se ispitivati tijekom rada te su dana neka od njihovih osnovnih svojstva. Za analizu djelotvornosti tekućih inhibirajućih sredstva provedena su ubrzana korozijska ispitivanja u slanoj i vlažnoj komori te elektrokemijska ispitivanja. Na kraju eksperimentalnog dijela rada proveden je test ispirljivosti inhibitora.

Abstract (english)

Corrosion is a process of unintended wear of construction material under chemical, physical and biological environmental conditions. In order to protect the construction materials from corrosion or to minimize corrosion, there are different methods of protection. One of the protection methods is application of corrosion inhibitors. Corrosion inhibitors are substances of inorganic or organic origin which, at very low concentrations, reduce corrosion rates to technologically acceptable values. The growing need for temporary protection of construction materials during their transport or storage has resulted in the development of liquid inhibitors which are applied to the metal in the form of wet film.

Graduate thesis consists of two parts: theoretical and experimental.

Theoretical part of the paper lists corrosion protection methods. Each method of protection is briefly described, while a special chapter is devoted to protection against corrosion by applying liquid corrosion inhibitors. In addition, the areas of application of the inhibitors are described and electrochemical examinations of corrosion inhibition effectiveness are described in the experimental part.

In the introduction to the experimental part of the work, the inhibitors that will be tested during the work are listed and some of its basic properties are given. Accelerated corrosion tests in salt spray and humidity chamber and electrochemical tests were performed to analyze the efficiency of liquid inhibitors. From the electrochemical tests, Tafel's extrapolation and electrochemical impedance spectroscopy were performed. At the end of the experimental part, an inhibitor cleaning test was performed.

• Keywords: korozija; metode zaštite od korozije; inhibitori korozije; elektrokemijska ispitivanja
• Keywords (english): corrosion; corrosion protection methods; corrosion inhibitors; electrochemical tests
• Language: croatian
• URN:NBN: urn:nbn:hr:235:460102
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 19:42:17