Sökning: "Electrolytic extraction EE"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Electrolytic extraction EE.

  1. 1. 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

  3. 2. Evaluation of different non-metallic inclusions in steel chips by using electrolytic extraction : Evaluation of a methodology for electrolytic extraction and scanning electron microscopy - energy dispersive spectroscopy (SEM-EDS) analysis

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Niklas Jespersson; Torbjörn Sandberg; [2021]
    Nyckelord :;

    Sammanfattning : Analysing non-metallic inclusions (NMI) by conventional microscopy is prone to errors.  Better imaging can be achieved by using electrolytic extraction (EE) to effectively dissolve the metal matrix, freeing the inclusions so that they can be collected on a filter. LÄS MER

  4. 3. Electrolytic Extraction of Aluminium Bifilms

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Simon Bergfors; Davida Flink; [2020]
    Nyckelord :Aluminium; Bifilms; Oxide films; Electrolytic extraction; Scanning electron microscope; Aluminium; Oxidfilm; Elektrolytisk extraktion; Svepelektronmikroskop;

    Sammanfattning : Bifilms is the oxide layer created between two surfaces in the melt of light metals that form an oxide layer. These become planar inclusions in the final casting and are problematic for the mechanical properties such as cracks and crack initiations. LÄS MER

  5. 4. Three-dimensional Investigations of Different Sulfides in Steels by Using Electrolytic Extraction

    Master-uppsats, KTH/Materialvetenskap

    Författare :Pang Kit Jerry Lam; [2016]
    Nyckelord :Electrolytic extraction EE ; Manganese sulfides MnS ; Heat treatment HT ; Size; Number density per unit volume Nv ; Morphology; Aspect ratio AR ; Particle size distribution PSD ;

    Sammanfattning : The emphasis of this study is focusing on three-dimensional (3D) investigations of the manganese sulfide (MnS) inclusions characteristics in steels by using electrolytic extraction (EE). Two steel grades, 42CrMo4 and 157C, heat treated (HT) at 900 oC were investigated. LÄS MER

  7. 5. THE EVALUATION OF NON-METALLIC INCLUSIONS IN CALCIUM-TREATED STEEL BY USING ELECTROLYTIC EXTRACTION

    Master-uppsats, KTH/Materialvetenskap

    Författare :Hongying Du; [2016]
    Nyckelord :Steel; Electrolytic Extraction; Non-metallic inclusion; Calcium treatment;

    Sammanfattning : This study aims on characterization of non-metallic inclusions (oxides and sulfides) in steel with and without Calcium treatment. In this paper, the three-dimensional (3-D) investigation method of inclusions on film filter after Electrolytic Extraction (EE) of steel samples is applied on two different steel grades (280, 316L). LÄS MER