Caldie steel will be nitrided at a temperature of 520°C. By using Table 1, determine the nitrogen content at 0.4 mm away from the surface after 7 hours of nitriding, if the nitrogen content after...

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Caldie steel will be nitrided at a temperature of 520°C. By using Table 1, determine<br>the nitrogen content at 0.4 mm away from the surface after 7 hours of nitriding, if<br>the nitrogen content after nitriding at the steel surface is 0.1 wt%. The values of the<br>activation energy Q and the diffusion coefficient Do for the diffusion process<br>between nitrogen and steel are 75kJ/mol and 5 × 107 m²/s respectively.<br>

Extracted text: Caldie steel will be nitrided at a temperature of 520°C. By using Table 1, determine the nitrogen content at 0.4 mm away from the surface after 7 hours of nitriding, if the nitrogen content after nitriding at the steel surface is 0.1 wt%. The values of the activation energy Q and the diffusion coefficient Do for the diffusion process between nitrogen and steel are 75kJ/mol and 5 × 107 m²/s respectively.

Table 1: Table showing error function values<br>erf(z)<br>erf(z)<br>erf(z)<br>0.55<br>0.9340<br>0.9523<br>0.5633<br>0.6039<br>0.6420<br>0.6778<br>1.3<br>1.4<br>0.025<br>0.0282<br>0.60<br>0.0564<br>0.65<br>0.70<br>0.05<br>1.5<br>0.9661<br>0.10<br>0.1125<br>1.6<br>0.9763<br>0.1680<br>0.2227<br>0.75<br>0.15<br>0.20<br>0.7112<br>1.7<br>1.8<br>0.9838<br>0.7421<br>0.7707<br>0.80<br>0.9891<br>0.25<br>0.30<br>0.2763<br>0.85<br>0.3286<br>0.3794<br>0.4284<br>0.7970<br>0.8209<br>1.9<br>2.0<br>2.2<br>0.9928<br>0.9953<br>0.9981<br>0.90<br>0.35<br>0.95<br>0.40<br>1.0<br>0.8427<br>2.4<br>0.9993<br>0.45<br>0.4755<br>1.1<br>0.8802<br>2.6<br>0.9998<br>0.50<br>0.5205<br>1.2<br>0.9103<br>2.8<br>0.9999<br>

Extracted text: Table 1: Table showing error function values erf(z) erf(z) erf(z) 0.55 0.9340 0.9523 0.5633 0.6039 0.6420 0.6778 1.3 1.4 0.025 0.0282 0.60 0.0564 0.65 0.70 0.05 1.5 0.9661 0.10 0.1125 1.6 0.9763 0.1680 0.2227 0.75 0.15 0.20 0.7112 1.7 1.8 0.9838 0.7421 0.7707 0.80 0.9891 0.25 0.30 0.2763 0.85 0.3286 0.3794 0.4284 0.7970 0.8209 1.9 2.0 2.2 0.9928 0.9953 0.9981 0.90 0.35 0.95 0.40 1.0 0.8427 2.4 0.9993 0.45 0.4755 1.1 0.8802 2.6 0.9998 0.50 0.5205 1.2 0.9103 2.8 0.9999

Jun 11, 2022

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Caldie steel will be nitrided at a temperature of 520°C. By using Table 1, determine the nitrogen content at 0.4 mm away from the surface after 7 hours of nitriding, if the nitrogen content after...

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