Engineering, 25.06.2020 03:01, lilpeepxliltracy

A sheet of steel 1.6 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 6.9 × 10-11 m2/s, and the diffusion flux is found to be 1.3 × 10-7 kg/m2-s. Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4.1 kg/m3. How far into the sheet from this high-pressure side will the concentration be 2.7 kg/m3? Assume a linear concentration profile.

Answers: 2

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 14:10, makaylashrout77

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Answers: 2

continue

Engineering, 04.07.2019 18:10, heidiburgos1own6c0

Fluids at rest possess no flow energy. a)- true b)- false

Answers: 3

continue

Engineering, 04.07.2019 18:10, johnthienann58

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

Answers: 2

continue

Engineering, 04.07.2019 18:10, colin774

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Answers: 2

continue

Do you know the correct answer?

A sheet of steel 1.6 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to a...