Materials Characterization — Winter 2022

State the importance of materials characterization.

Distinguish between Positive Replica and Negative Replica

Differentiate between heat fkux DSC and power compensated DSC.

Explain the phenomenon of cryo trapping.

Write short note on Colour Metallography.

What do you understand by optical Abberation? Differentiate between on axis and off axis abberation

Write short note on field ion microscopy.

What is the purpose of moleculer sieve in sorption pump?

What do you understand by vertical resolution?

Explain in detail the principle, working, advantages and applications of SEM

Draw the schematic diagram illustrating the principle of Metallurgical microscope.

List the application of TEM

Differentiate between optical microscopy and Electron Microscopy

Write short note on formvar replica.

Statev the importance of Image Analyzer as quantitative metallography tool..

What is XRD? Derive The Bragg’s law

State the electrolyte and conditions for electrolytic polishing to prepare replica.

Draw the schematic diagram of HOT stage microscopy.

Explain Electron Probe Micro Analysis (EPMA) in detail.

Explain the terminology 1) Numerical Aperture 2) depth of focus

Which technique is used to find out the elemental analysis of geological material? Explain its principle in brief.

Explain the application of XPS (ESCA) for material characterization

Draw a schematic diagram of arrangement of TMA.

State the working principle of Turbo molecular pump

Differentiate between EDS and WDS.1