Search for dissertations about: "pre-oxidation"

Showing result 1 - 5 of 10 swedish dissertations containing the word pre-oxidation.

2. 1. High Temperature Corrosion of FeCrAl Alloys: The influence of water vapour and alkali salt

   Author : Niklas Israelsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pre-oxidation; FeCrAl; kinetics; high temperature corrosion; KCl; water vapour; alumina; oxidation;

   Abstract : The corrosive environment in biomass- and waste-fired boilers has been known for several years. The traditionally used FeCr and FeNiCr steels show limited performance in the aggressive environment that contains more H2O and alkali salts than traditional fuel. READ MORE

4. 2. High Temperature Oxidation and Chlorination of FeCrAl alloys

   Author : Niklas Israelsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; KCl; pre-oxidation; FeCrAl; H2O; high-temperature corrosion; kinetics;

   Abstract : AbstractThe constant strive for improved efficiency and lower-cost industrial processes often results in progressively higher temperatures and more aggressive environments. High- temperature corrosion is a well-known problem in biomass- and waste-fired boilers and is one of the obstacles to overcome in achieving a more sustainable society. READ MORE

5. 3. Corrosion of High-Temperature Alloys in Molten Salts

   Author : Esraa Hamdy Mohamedin; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Thermal energy storage; Pre-oxidation; Carburisation; Molten salts; Phase transition; High-temperature corrosion; Alumina-forming alloys; Alkali transition metalates; Alkali aluminate; Chromia-forming alloys; Alumina; Concentrated solar power;

   Abstract : Concentrated solar power (CSP) is an interesting technology that involves storing solar energy in the form of heat and subsequently converting it into electricity. The third-generation (Gen3) CSP plants aim to operate at temperatures >700°C, necessitating the deployment of new heat storage materials that can withstand such high operating temperatures. READ MORE

6. 4. High Temperature Corrosion of Stainless Steels in Low Oxygen Activity Environments -The effect of H2 and H2O

   Author : Hamed Hoseini Hooshyar; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pre-oxidation; chromia former; H2O; High Temperature Corrosion; alumina former; H2;

   Abstract : Gasification of biomass and waste is promising for reducing the use of fossil fuels. While the operation conditions of superheaters and gas coolers in the gasifier are restricted by gas-side corrosion, scientific investigations are very scarce in this field. READ MORE

7. 5. High temperature corrosion of low-alloyed and stainless steels: mechanistic study of chlorine-induced corrosion

   Author : Mercedes Andrea Olivas Ogaz; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; stainless steels; low-alloyed steels; pre-oxidation; High temperature corrosion; chlorine-induced corrosion;

   Abstract : The global demand on power generation is constantly increasing and so far, also its environmental impact. The environmental impact could primarily be directed to the power generation being based on fossil fuels, giving a net increase of CO2 to the atmosphere when combusted. READ MORE