Look at the Cu-Ni alloy in picture 1. After 700 hours of heat treatment at 1100 °C, the concentration of Cu is 2.5% by weight, 3 mm below the surface of Ni.What temperature is needed to achieve the same concentration 2 mm from the surface?D0 and Qd for Cu in Ni are given in picture 2 Concentration of Ni, Cu100CuCuPositionNiNi DiffusingSpeciesCb8 UZ ZCcNbFecFeCudAlcMgcZnModNidZnCuCuMgcCucNidHost MetalFe (a or BCC)ªFe (y or FCC)Fe (a or BCC)ªFe (y or FCC)"Interstitial DiffusionSelf-DiffusionFe (a or BCC)"Fe (y or FCC)ªCu (FCC)Al (FCC)Mg (HCP)Zn (HCP)Mo (BCC)Ni (FCC)Cu (FCC)Zn (HCP)Al (FCC)Al (FCC)Ni (FCC)Cu (FCC)Do (m²/s)1.1 x 10-62.3 x 10-55.0 x 10-79.1 x 10-52.8 x 10-45.0 × 10-52.5 x 10-52.3 x 10-41.5 x 10-41.5 x 10-51.8 x 10-41.9 × 10-4Interdiffusion (Vacancy)2.4 x 10-52.1 x 10-46.5 x 10-51.2 x 10-42.7 x 10-51.9 × 10-4Qa (J/mol)87,400148,00077,000168,000251,000284,000200,000144,000136,00094,000461,000285,000189,000124,000136,000130,000256,000230,000

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Answered: Look at the Cu-Ni alloy in picture 1.…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Look at the Cu-Ni alloy in picture 1. After 700 hours of heat treatment at 1100 °C, the concentration of Cu is 2.5% by weight, 3 mm below the surface of Ni.
What temperature is needed to achieve the same concentration 2 mm from the surface?
D0 and Qd for Cu in Ni are given in picture 2