Essays about: "crystal hardness"

Found 4 essays containing the words crystal hardness.

  1. 1. Mechanical properties of SiC nanowires with polytypes

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Anders Vesti; [2019]
    Keywords : atomistic modeling; nanowires; molecular dynamics; simulation; SiC; silicon carbide; fracture behavior; nanomechanics; Physics and Astronomy;

    Abstract : In this report, we model the mechanical properties and fracture behavior of SiC nanowires with different polytypes using Molecular Dynamics (MD) simulations. The mechanical properties investigated are the Young’s modulus, the maximum tensile stress and the fracture strain. The three polytype tested are SiC (3C), (2H) and (4H). READ MORE

  3. 2. Titanium Surface Properties: A comparison of titanium from two suppliers

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Adam Almström; [2018]
    Keywords : Titanium; Titanium corrosion; Electron backscatter diffraction; EBSD; Glow-discharge optical emission spectroscopy; GDOES; materials chemistry; materialkemi; Technology and Engineering;

    Abstract : This master thesis, completed at the company Alfa Laval studied the surface properties of grade 1 titanium from two different suppliers to examine if there were any significant differences between the two suppliers. Previously titanium from the two suppliers had performed differently at times when used in Alfa Lavals heat exchangers. READ MORE

  4. 3. Thermal Stability of Arc Evaporated ZrCrAlN

    University essay from Nanostrukturerade material; Tekniska högskolan

    Author : Muhammad Bilal Syed; [2012]
    Keywords : Thermal Stability; ZrCrAlN; Reactive Cathodic Arc Evaporation; Anneal; Age Hardening; XRD; EDS; Nanoindentation; Hardness.;

    Abstract : This research explores the thermal stability of ZrCrAlN material system. For this purpose fourteen different compositions of ZrCrAlN coatings were deposited onto tungsten carbide substrates by using reactive cathodic arc evaporation. These compositions were further annealed at 800oC, 900oC, 1000oC and 1100oC temperatures. READ MORE

  5. 4. Oxidation and degradation of nickel-base alloys at high temperatures

    University essay from KTH/Materialvetenskap

    Author : Frans Palmert; [2009]
    Keywords : oxidation; nickel; nickel-base; superalloy; PWA1483; IN792; turbine; cyclic; spalling; hardness; gamma prime; coarsening; degradation; microstructure;

    Abstract : This master’s thesis work is a study of oxidation and degradation of nickel-base alloys at high temperatures. The materials studied are designed for use in critical gas turbine components such as turbine blades and vanes. Some of the alloys are used today, whereas others have not yet entered commercial application. READ MORE