A diffusion couple of two metals, A and B, was fashioned as shown:Diffusion of A atomsA-B alloyBDiffusion of B atomsAfter a 690 hour heat treatment at 1120°C the concentration of A is 1.8 wt% at the 3.2 mm position within Metal B. At whattemperature (in Kelvin) must the diffusion couple need to be heated to produce this same concentration at a 2.3 mm positionafter 690 h? The preexponential and activation energy values for the diffusion of A in B are 1.9 x 104 m²/s and 239 kJ/mol,respectively.

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A diffusion couple of two metals, A and B, was fashioned as shown: Diffusion of A atoms K A-B alloy B Diffusion of B atoms After a 690 hour heat treatment at 1120°C the concentration of A is 1.8 wt% at the 3.2 mm position within Metal B. At wha temperature (in Kelvin) must the diffusion couple need to be heated to produce this same concentration at a 2.3 mm positio after 690 h? The preexponential and activation energy values for the diffusion of A in B are 1.9 x 104 m²/s and 239 kJ/mol, respectively.

A diffusion couple of two metals, A and B, was fashioned as shown: Diffusion of A atoms K A-B alloy B Diffusion of B atoms After a 690 hour heat treatment at 1120°C the concentration of A is 1.8 wt% at the 3.2 mm position within Metal B. At wha temperature (in Kelvin) must the diffusion couple need to be heated to produce this same concentration at a 2.3 mm positio after 690 h? The preexponential and activation energy values for the diffusion of A in B are 1.9 x 104 m²/s and 239 kJ/mol, respectively.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Atomic diffusion in solids

In material science, diffusion can take place in solid, liquid, and gases. In solids, atomic diffusion can take place with the help of thermally activated and randomly vibrating atoms. The atomic diffusion in solids is complex and very slow in comparison to atomic diffusion in liquids and gases because the interatomic distance between the atoms is smaller in solids as compared to liquids and gases.

Question

A diffusion couple of two metals, A and B, was fashioned as shown:
Diffusion of A atoms
A-B alloy
B
Diffusion of B atoms
After a 690 hour heat treatment at 1120°C the concentration of A is 1.8 wt% at the 3.2 mm position within Metal B. At what
temperature (in Kelvin) must the diffusion couple need to be heated to produce this same concentration at a 2.3 mm position
after 690 h? The preexponential and activation energy values for the diffusion of A in B are 1.9 x 104 m²/s and 239 kJ/mol,
respectively.

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