Engineering, 11.05.2021 03:00 shinyelish6

A diffusion couple is formed between a special stainless steel and nickel. A temperature of 2500 degrees Celsius is held there for 20 hours. The initial concentration of nickel in steel is 0.40 wt%, and the surface concentration is 1.00 wt%. How long will it take for the steel to reach a nickel content of 0.60 wt% at a distance of 0.6 mm into the steel

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A diffusion couple is formed between a special stainless steel and nickel. A temperature of 2500 deg...