Transmission Electron Microscope

Assignment 1 – Transmission Electron MicroscopyPart I:Analysis of Diffraction Patterns of superlattice (5 marks)You are provided with a sketch, which locates the TEM micrographs and diffraction patterns taken of the ‘stainless steel sample’ during your lab session. (This is information which is typically recorded when carrying out TEM experiments.• Index at least 2 of the zone axis diffraction patterns (ZAP’s) and determine the zone axis direction (ZAD) for each. (N.B. Assume the material is in fcc structure and index each ZAP and ZAD consistently.• Plot each ZAD on a Kikuchi map. (You can use a published Kikuchi map or draw your own diagram.)Part II:1) Determination of Burgers Vector of Dislocations (5 marks)• Identify the operating diffraction vector (g) for each of the images of the dislocation array taken under 2-beam diffraction conditions.• With specific reference to these images, describe the general procedure for determining the Burgers vector (b) of the dislocations.2) Determination chemical compositions of materials (5 marks)• Identify the chemical composition from EDX spectrum.• Check the chemical composition difference from matrix, grain boundary or any possible precipitates, if these were done by your group.Give me your email so I can forward you the files.