Materials Characterization Technique || Metallurgy Interview Question Series || 5

[@Silavite]

Perhaps this response is overly basic, but before getting into specific testing methods, the first thing to do is simply look at the material with one's eyes. What color is it? (Does it have the yellow of brass? Does is have the patina of a black oxide coating?) Are there any notable features? (Does it have large and obvious grains that may indicate hot-dip galvanization? Does it have consistent lines which may indicate formation by extrusion?) Does it reflect with a specular or diffuse character? (This indicates surface roughness.) Does the surface bear marks from milling or other machining? (Machining may induce internal stresses.) If practical, feel it and weigh it to get an idea of the density. There is a lot of knowledge that can be gained with a simple look.

[@jordandjoukeng8569]

Thankyou for the video it explain clearly Please I wish to enter in contact with a member for further exchange Thank you

[@Amy-zh5jl]

Then what is the different between x-ray,spectro,XPS ....if XPS exact composition then what is role of spectro???

[@MetallurgicalEngineering]

XPS is X-ray Photoelectron Spectroscopy (XPS). This is a surface-sensitive quantitative spectroscopic technique that measures the elemental composition, empirical formula, chemical state, and electronic state of the elements within a material.

[@MetallurgicalEngineering]

X-ray Diffraction (XRD) is a powerful technique used in materials science, physics, chemistry, and other related fields for the characterization of crystalline materials. Applications: 1. Phase Identification: By comparing the diffraction pattern of an unknown material to a database of known patterns, one can identify what compounds are present. 2. Crystal Structure Determination: XRD can provide information about the atomic arrangement within the crystal lattice. 3. Crystallite Size and Strain: The broadening of diffraction peaks can be analyzed to estimate crystallite size and lattice strain.