Essays about: "chromium thesis"

Showing result 1 - 5 of 34 essays containing the words chromium thesis.

1. 1. Optimization of alloys recovery in steel scrap sorting : Technological, economic and environmental considerations for a better chromium, nickel and molybdenum recovery in steel scrap

   University essay from KTH/Materialvetenskap

   Author : Simone Quintè; [2023]
   Keywords : Steel scrap sorting; stainless steel; Chromium; Nickel; Molybdenum; alloys recovery; Laser Induced Breakdown Spectroscopy; revenue modeling; CO2 emissions modeling; Stålskrot Sortering; rostfritt stål; Krom; Nickel; Molybden; återvinning av legeringar; Laserinducerad nedbrytningsspektroskopi; intäktsmodellering; Modellering av CO2-utsläpp;

   Abstract : Today’s steelmaking industry is highly dependent on steel scrap supply. In order to reduce the greenhouse gas emissions (GHGs) deriving from the steel industry, it is of utmost importance to ensure that high percentages of steel scrap are recycled, reducing the reliance on the traditional ore-based steelmaking, which is significantly more environmentally impactful. READ MORE

3. 2. Theoretical investigation of α-iron chromium carbide (α-Fe/Cr7C3) interfaces

   University essay from Malmö universitet/Institutionen för materialvetenskap och tillämpad matematik (MTM)

   Author : Hussein Al-Hussein; [2023]
   Keywords : Alpha-iron; Chromium carbide; Cr7C3; Fe; Theoretical investigation; Orthorhombic; X-ray diffraction pattern; XRD; VASP; VESTA; Body-centered-cubic; Ferrite; Density functional theory; DFT; Surface relaxation; Simulation; Calculation; Energy relaxation; Slab models; Coherency; Surface energy; Interfacial energy; Alfa-järn; Kromkarbid; Cr7C3; Fe; Teoretisk undersökning; Ortorombisk; Röntgendiffraktion; XRD; VASP; VESTA; Ytenergi; Koherent; Simulering; Beräkning; Järnkarbid; DFT; Täthetsfunktionalanalys;

   Abstract : This master thesis presents a theoretical investigation of the energy and stability of interfaces in iron-carbide compounds, specifically focusing on the α-Fe/Cr7C3 system. The study aims to fill the gap in knowledge regarding the surface energetics of these interfaces using Density Functional Theory (DFT). READ MORE

4. 3. Assessing the suitability of using the by-product Petrit-E from steel production as agricultural fertilizer

   University essay from Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

   Author : Eva Galyas; [2022]
   Keywords : steel slag; fertilizer; soil; leaching test;

   Abstract : Due to the growing population, waste generation and food supply industries need to move towards a circular economy and take advantage of by-products. Metallurgical slag is a main by-product during steel production which contains several valuable minerals and can be used for several further applications, including water purification and agriculture. READ MORE

5. 4. Improvement of Pt-based catalyst supported on CeZrO2 used for the high-temperature water-gas shift reaction

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Milda Grikainyte; [2022]
   Keywords : Water-gas shift; catalyst; chemical engineering; Chemistry;

   Abstract : The iron-chromium (Fe/Cr) catalyst is used for high-temperature water-gas shift (HT WGS) reaction. A major concern using the Fe/Cr catalyst is that it contains hexavalent chromium (Cr+6) which is a potent carcinogen causing health and environmental issues. READ MORE

6. 5. Synthesis and thermoelectric properties of Cr1-xMexN (Me = Mo, V)

   University essay from Linköpings universitet/Tunnfilmsfysik

   Author : Victor Rutberg; [2022]
   Keywords : Chromium nitride; thin films; thermoelectrics; physical vapour deposition; medium entropy alloy;

   Abstract : Among emerging materials systems for thermoelectric applications, the early transition-metal nitrides based on ScN and CrN show unexpectedly promising properties. These properties are determined by high Seebeck coefficient, low thermal conductivity, and high electrical conductivity. READ MORE