Metallic Subodh
Metallurgists know how to mold things as per their needs.
Thursday, December 15, 2022
8.8 Compare the diffusivities of hydrogen, nitrogen, and nickel in iron at 300 K and explain the difference between the three values.
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How to measure the amount of shear fracture in an impact test (ASTM A370 )
8.1 The ratio of diffusion rate of silver in silicon at 1350°C to that at 1100°C was found to be 8 in a doping process. Calculate the activation energy Q for silver diffusion in silicon.
8.3 Amorphous selenium used as a semiconductor material exhibits unusual diffusion characteristics. The following is a set of experimental data for self-diffusion in amorphous selenium. Calculate D0 and Q and comment on your results. T, °C D, m2 s–1 35 7.7 10–16 40 2.4 10–15 46 3.2 10–14 56 3.2 10–13
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