Sökning: "cathodic reduction"
Visar resultat 1 - 5 av 6 uppsatser innehållade orden cathodic reduction.
1. Undersökning av mekanismen bakom strålningsinducerad korrosion av koppar
Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)Sammanfattning : KBS-3 är den svenska modellen för hantering och förvaring av utbränt kärnbränsle. Tanken är att det utbrända bränslet kommer att förvaras i kopparkapslar 500 meter ner i berggrunden i minst 100 000 år. Valet av koppar beror på att koppar har ett högt motstånd mot korrosion. LÄS MER
2. Groundwater denitrification by fluidized bioelectrochemical systems
Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)Sammanfattning : Groundwater (GW) accounting for most of the freshwater available around the World, finding sustainable techniques to depollute it is of crucial importance for safe drinking water supply. The extensive use of fertilizers in the agriculture, as well as other anthropogenic activities, are contributing to the excessive nitrate levels in some aquifers. LÄS MER
3. Corrosion initiation induced by sodium sulfate and sodium chloride particles on Cu and the golden alloy Cu5Al5Zn at simulated atmospheric conditions
Master-uppsats, KTH/MaterialvetenskapSammanfattning : Effects of sodium sulfate (Na2SO4) particle deposition on the atmospheric corrosion of copper (Cu) metal and a Cu-based alloy (Cu5Al5Zn) used in architectural applications were investigated at laboratory conditions compared with effects induced by sodium chloride (NaCl) and to some extent ammonium sulfate (NH4)2SO4 induced corrosion. Pre-deposited surfaces were exposed to repeated wet/dry conditions in a climatic chamber and the formation of corrosion products were assessed using light optical microscopy (LOM), scanning electron microscopy with elemental analysis (SEM/EDS), Fourier transform infrared techniques (FTIR microscopy) and cathodic reduction (CR). LÄS MER
4. Hydrogen-assisted stress corrosion cracking of high strength steel
Master-uppsats, KTH/MaterialvetenskapSammanfattning : In this work, Slow Strain Rate Test (SSRT) testing, Light Optical Microscopy (LOM) and Scanning Electron Microscopy (SEM) were used to study the effect of microstructure, corrosive environments and cathodic polarisation on stress corrosion cracking (SCC) of two grades of high strength steels, Type A and Type B. Type A is manufactured by quench and tempered (Q&T) method. LÄS MER
5. Hydrogen-assisted stress corrosion cracking of high strength steel
Master-uppsats, KTH/Skolan för kemivetenskap (CHE)Sammanfattning : In this work, Slow Strain Rate Test (SSRT) testing, Light Optical Microscopy (LOM) and Scanning Electron Microscopy (SEM) were used to study the effect of micro-structure, corrosive environments and cathodic polarisation on stress corrosion cracking (SCC) of two grades of high strength steels, Type A and Type B. Type A is manufactured by quench and tempered (Q&T) method. LÄS MER