Sökning: "Sulfider"

Visar resultat 1 - 5 av 28 uppsatser innehållade ordet Sulfider.

  1. 1. A Petrographic and Paragenetic Characterization of the Ertelien Ni-Cu Deposit (Norway)

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Alena Niarezka; [2023]
    Nyckelord :Ertelien Ni-Cu deposit; ore geology; enrichment processes; nickel; cobalt; copper; optical microscopy; electron probe micro-analysis; critical metals; Ertelien Ni-Cu fyndighet; malmgeologi; anrikningsprocesser; nickel; kobolt; koppar; optisk mikroskopi; elektronsondsmikroanalys; kritiska metaller;

    Sammanfattning : The escalating demand for metals driven by advancements in renewable energy technologies and hightech products has underscored the significance of understanding and characterizing ore deposits. This study focuses on the Ertelien Ni-Cu deposit in Norway, a region rich in nickel, cobalt, and copper resources—essential components for the transition to a sustainable energy future. LÄS MER

  3. 2. Investigation of Non-Metallic Inclusions in Inconel 718 by Using Conventional Cross-Sectioned (CS) Method and Experimental Extraction Metal-Surfaced (MS) Method

    Master-uppsats, KTH/Materialvetenskap

    Författare :Mehreen Baig; [2022]
    Nyckelord :;

    Sammanfattning : Inconel 718 is a nickel-based alloy, predominantly used in the oil and gas industry, in aircraft engines as well as in gas turbine engines. It provides exceptional properties like high strength, creep resistance, corrosion resistance and long fatigue life at high temperatures as well as in cryogenic environments. LÄS MER

  4. 3. Köldegenskaper hos RME

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Haben Tesfamariam Yebyo; [2022]
    Nyckelord :Köldegenskaper; biodiesel; RME; mättade fettsyrametylester; monoglycerider; kristallisation;

    Sammanfattning : Biodiesel är ett bra alternativ till petroleumdiesel. Produktion av biodiesel är en relativt enkel process. Vegetabilisk olja eller animaliskt fett reagerar med alkohol och omförestras till biodiesel (monoalkylestrar). En homogen katalysator, vanligen KOH eller NaOH, behövs för att reaktionen ska ske snabbt. LÄS MER

  5. 4. Characterisation of additively manufactured Inconel 718 alloy by using electrolytic extraction

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Leyla Koort; Viktoria Sutorius Trollbäck; [2021]
    Nyckelord :;

    Sammanfattning : The formation of non-metallic inclusions (NMIs) are common in all steel grades and it is not possible  as  of  today  to  be able  to  remove  all  of them.  The  inclusions  are  categorised  into endogenous (oxides, nitrides, sulfides, carbides, and phosphides), and exogenous (entrapment of  nonmetals:  slag, mold). LÄS MER

  7. 5. Evaluation of 25 MHz Ultrasonic Testing for Detection of Non-Metallic Inclusions in Steel

    Uppsats för yrkesexamina på avancerad nivå, KTH/Materialvetenskap

    Författare :Henrietta Isaksson; [2021]
    Nyckelord :Ultrasonic Testing; High Frequency Ultrasonic Testing; Quantification of inclusions; Fatigue Testing; Ultraljudstestning; Högfrekvent ultraljudstestning; Kvantifiering av inneslutningar; Utmattningstestning;

    Sammanfattning : Quantification of inclusions is important since it is correlated to the steel’s fatigue properties. One method that could be further developed for detection of inclusions in steel is ultrasonic testing (UST). LÄS MER