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A membrane is to be manufactured to the following specifications. At 700°C the leak rate of hydrogen at steady state is not to exceed 103 mol cm² hr' when the concentrations of hydrogen are maintained at Crigh = 7.7 × 1019 atoms cm³ on one side of the membrane and Cjow effectively zero on the other side. Determine the minimum thickness, &, of iron foil that will meet these requirements. The diffusion coefficient of atomic hydrogen in iron, DH, at 700°C is 3.091x104 cm?s1, Express your answer in units of cm.

A membrane is to be manufactured to the following specifications. At 700°C the leak rate of hydrogen at steady state is not to exceed 103 mol cm² hr' when the concentrations of hydrogen are maintained at Crigh = 7.7 × 1019 atoms cm³ on one side of the membrane and Cjow effectively zero on the other side. Determine the minimum thickness, &, of iron foil that will meet these requirements. The diffusion coefficient of atomic hydrogen in iron, DH, at 700°C is 3.091x104 cm?s1, Express your answer in units of cm.

Elements Of Electromagnetics
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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A membrane is to be manufactured to the following specifications. At 700°C the leak rate of hydrogen at steady state is not to exceed 103 mol cm2 hr' when the concentrations of hydrogen are maintained at Chigh = 7.7 × 1019 atoms cm³ on one side of the membrane and Clow effectively zero on the other side. Determine the minimum thickness, {, of iron foil that will meet these requirements. The diffusion coefficient of atomic hydrogen in iron, DH, at 700°C is 3.091x104 cm? s. Express your answer in units of cm.
Transcribed Image Text:A membrane is to be manufactured to the following specifications. At 700°C the leak rate of hydrogen at steady state is not to exceed 103 mol cm2 hr' when the concentrations of hydrogen are maintained at Chigh = 7.7 × 1019 atoms cm³ on one side of the membrane and Clow effectively zero on the other side. Determine the minimum thickness, {, of iron foil that will meet these requirements. The diffusion coefficient of atomic hydrogen in iron, DH, at 700°C is 3.091x104 cm? s. Express your answer in units of cm.
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