Katodna zaštita čelika u umjetnoj morskoj vodi

master's thesis

• Title (english): Cathodic protection of steel immersed in artificial sea water
• Author: Matija Bašnec
• Mentor: Vinko Šimunović (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2007-07-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

Korozija je nezaobilazna neželjena pojava kod raznih vrsta materijala pa tako i kod čeličnih konstrukcija. Brojna istraživanja temelje se na koroziji ugljičnih čelika (obično nelegiranih) zbog toga što se oni i najviše koriste kod izgradnje raznovrsnih konstrukcija. Korozija se može smanjiti i usporiti do vrijednosti koje su prihvatljive što omogućava dugogodišnje korištenje konstrukcija.

Diplomski rad sastoji se od dva dijela: teorijskog i eksperimentalnog dijela.

U teorijskom dijelu obrađeni su principi i mehanizmi djelovanja katodne zaštite te vrste anoda koje se pritom koriste. Opisana je problematika i utjecaj lutajućih struja koje se javljaju u ukopanim i uronjenim konstrukcijama. U eksperimentalnom dijelu rada izrađen je laboratorijski sustav katodne zaštite čelika u umjetnoj morskoj vodi. Ispitan je utjecaj istosmjernih i izmjeničnih lutajućih struja na nezaštićeni nelegirani čelik, te na čelik zaštićen Zn i Al anodama.

Abstract (english)

Corrosion is unavoidable phenomenon that occurs in various types of materials, as well as in steel structures. Numerous researches are based on corrosion of carbon steel (usually unalloyed) because they are the most used material in various constructions. Corrosion can be reduced and slowed down to acceptable values, allowing long-term use of structures.

Master’s work consist of two parts: theoretical part and experimental part.

In the theoretical part, the principles and types of cathodic protection and type of anodes that are used are discussed. Problems and interference of stray currents occurring in buried and immersed structures are also described. In experimental part, a laboratory system of cathodic protection of steel in artificial sea water was constructed. The influence of direct and alternating stray currents on unalloyed steel without protection; and with cathodic protection with sacrificial anodes made from Zn and Al alloy was tested and analyzed.

• Keywords: katodna zaštita; izmjenične lutajuće struje; istosmjerne lutajuće struje; umjetna morska voda
• Keywords (english): cathodic protection; AC stray current; DC stray current; artificial sea water
• Language: croatian
• URN:NBN: urn:nbn:hr:235:184718
• 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 19:40:33