Practice Index the diffraction pattern from an austenitic stainless steel sample with a FCC structure 1. Index each diffraction spot 2. Determine the zone axis
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Index each diffraction spot: To index each diffraction spot, we need to determine the Miller indices for each spot. Miller indices are a set of three integers that represent the orientation of a crystal plane within a crystal lattice. In an austenitic stainless Show more…
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Question 3 (20 points) Please tell the differences in diffraction patterns collected from single crystalline, polycrystalline and amorphous samples, explain why? Index the zone axis based on the diffraction patterns as shown below (it's FCC structure).
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Adi S.
2 The following table lists diffraction angles for the first three peaks (first-order) of the X-ray diffraction pattern for some metal. Monochromatic X-radiation having a wavelength of 0.0711 nm was used: (a) Determine whether this metal's crystal structure is FCC, BCC or neither FCC or BCC and explain the reason for your choice. (b) If the crystal structure is either BCC or FCC, identify which of the metals gives this diffraction pattern (Check the reference book to identify the element): Justify your decision. Peak Number Diffraction Angle (2q) 1 18.27 2 25.96 3 31.92
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