An Aluminum-Copper alloy initially containing (0.4 wt% Cu) is placed and held in an atmosphere that gives a constant surface Aluminum concentration of (1.0 wt% ). If after (43 h) the concentration of copper is (0.55 wt%) at a position (4.0 mm) below the surface. What is the diffusion coefficient of copper in aluminum for the treatment conditions. erf(z) 0.70 0.6778 0.75 0.7112 0.80 0.7421 0.85 0.7707 0.90 0.7970

An Aluminum-Copper alloy initially containing (0.4 wt% Cu) is placed and held in an atmosphere that gives a constant surface Aluminum concentration of (1.0 wt% ). If after (43 h) the concentration of copper is (0.55 wt%) at a position (4.0 mm) below the surface. What is the diffusion coefficient of copper in aluminum for the treatment conditions. erf(z) 0.70 0.6778 0.75 0.7112 0.80 0.7421 0.85 0.7707 0.90 0.7970

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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