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It is a non steady state diffusion problem and such type of problem can be solved by using given equation
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2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an oxygen-rich and...
10. Determine the carburizing time (in seconds) necessary to achieve a carbon concentration of 0.44 wt%...
10. Determine the carburizing time (in seconds) necessary to achieve a carbon concentration of 0.44 wt% at a position 3.0 mm into an iron-carbon alloy that initially contains 0.031 wt% C. The surface concentration is to be maintained at 1.2 wt% C, and the treatment is to be conducted at 1090°C. Assume that DO = 5.1 x 10-5 m2/s and Qd = 154 kJ/mol. You will find the table below useful. Z erf(z) t erf(z) Z erf(z) 0 0.55 1.3...
A steel plate contains 0.82% C and the surface is going to be carburized. The carburization...
A steel plate contains 0.82% C and the surface is going to be
carburized. The carburization takes place such that the surface
composition is 3.0% C, how long will it take to have 2.4% C at a
depth of 0.55 mm into the plate at a temperature of 560
°C?
erf(2) 7 erf(x) Z erf(2) 0 0 0.55 0.5633 1.3 0.9340 0.025 0.0282 0.60 0.6039 1.4 0.9523 0.05 0.0564 0.65 0.6420 1.5 0.9661 0.10 0.1125 0.70 0.6778 1.6 0.9763 0.15...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at a position 1.2 mm into an iron-carbon alloy that initially contains 0.031 wt% C. The surface concentration is to be maintained at 1.2 wt% C, and the treatment is to be conducted at 1260°C. Assume that Do - 5.1 x 10-5 m2/s and Qd-154 kJ/mol. You will find the table below useful. erf(z) erf(z)z erf(z) 0 0 0.55 0.5633 1.3 0.9340 0.025 0.02820.600.6039 1.4...
Nitrogen from a gaseous phase is to be diffused into pure iron at 700°C. If the...
Nitrogen from a gaseous phase is to be diffused into pure iron at 700°C. If the surface concentration is maintained at 0.12 wt% N, what will be the concentration (in weight percent) 3.9 mm from the surface after 6.5 h? The diffusion coefficient for nitrogen in iron at 700°C is 4.1 x 10-10 m²/s. 1.7 z erf(z) 0.00 0.0000 0.025 0.0282 0.05 0.0564 0.10 0.1125 0.15 0.1680 0.20 0.2227 0.25 0.2763 0.30 0.3286 0.35 0.3794 0.40 0.4284 0.45 0.4755 0.50...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at a position 2.9 mm into an iron-carbon alloy that initially contains 0.031 wt% C. The surface concentration is to be maintained at 1.2 wt% C, and the treatment is to be conducted at 1180°C. Assume that Do = 5.1 x 10-5 m2/s and Qd-154 krmol. You will find the table below useful. er(z) erf(z)erf(z) 0.55 0.5633 1.3 0.9340 0.025 0.0282 0.60 0.6039 1.4 0.9523...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at a position 1.4 mm into an iron-carbon alloy that initially contains 0.031 wt% C. The surface concentration is to be maintained at 1.2 wt% C, and the treatment is to be conducted at 1130°C. Assume that Do -5.1 x 10-5 m2/s and Qd 154 kJ/mol. You will find the table below useful. erf(z) erf(2)z erf(z) 5633 1.3 0.9340 0.025 0.0282 0.60 0.6039 1.4 0.9523...
You are overseeing the carburizing of gears. You find that a batch of gears us ub a urnace and that the temperature has...
You are overseeing the carburizing of gears. You find that a
batch of gears us ub a urnace and that the temperature has been set
too low by 25*c You decide to solve the problem by extending the
carburization time so that an equivalent amount of diffusion takes
place
.11 h You are overseeing the carburization of gears. You find that a batch of gears is in a furnace and that the temperature has been set too low by 25...
please solve 2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an...
please solve
2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an oxygen-rich and virtually carbon-free atmosphere at 1325 K (1052°C). Under these circumstances the carbon diffuses from the alloy and reacts at the surface with the oxygen in the atmosphere-that is, the carbon concentration at the surface position is maintained essentially at 0 wt% C. (This process of carbon depletion is termed decarburization.) At what position will the carbon concentration be 0.25 wt% after a...
please solve it as soon as u can 2 Chapte c Antrop G Antrop 4R0* G...
please solve it as soon as u can
2 Chapte c Antrop G Antrop 4R0* G The di * This is * The Di Solved * Math + missouri.instructure.com/courses/23331/assignments/513990 ?module_item_id=1411967 Question 4 0/3 View Policies Show Attempt History Current Attempt in Progress Ses An iron-carbon alloy initially containing 0.245 W i s exposed to an oxygenrich and virtually carbon-free atmosphere at 1100°C. Under these drcumstances the carbon diffuses from the allorandreacts at the surface with the oxygen in the atmosphere...
An iron-carbon alloy initially containing 0.221wt% Cis exposed to an oxygen-rich and virtually carbon-free atmosphere at...
An iron-carbon alloy initially containing 0.221wt% Cis exposed to an oxygen-rich and virtually carbon-free atmosphere at 1090'C. Under these circumstances the carbon diffuses from the alloy and reacts at the Surface with the cxygen in the atmosphere; that is, the carbon concentration at the surface position is maintained essentialy at 00 wt% C.At what position will the carbon concentration be 0.166 wt% after a 6 h treatment? The value of D at 1090°C is 5.5x 100/s erfizk erflr) erfiz) 000...
10. Determine the carburizing time (in seconds) necessary to achieve a carbon concentration of 0.44 wt% at a position 3.0 mm into an iron-carbon alloy that initially contains 0.031 wt% C. The surface concentration is to be maintained at 1.2 wt% C, and the treatment is to be conducted at 1090°C. Assume that DO = 5.1 x 10-5 m2/s and Qd = 154 kJ/mol. You will find the table below useful. Z erf(z) t erf(z) Z erf(z) 0 0.55 1.3...
A steel plate contains 0.82% C and the surface is going to be
carburized. The carburization takes place such that the surface
composition is 3.0% C, how long will it take to have 2.4% C at a
depth of 0.55 mm into the plate at a temperature of 560
°C?
erf(2) 7 erf(x) Z erf(2) 0 0 0.55 0.5633 1.3 0.9340 0.025 0.0282 0.60 0.6039 1.4 0.9523 0.05 0.0564 0.65 0.6420 1.5 0.9661 0.10 0.1125 0.70 0.6778 1.6 0.9763 0.15...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at a position 1.2 mm into an iron-carbon alloy that initially contains 0.031 wt% C. The surface concentration is to be maintained at 1.2 wt% C, and the treatment is to be conducted at 1260°C. Assume that Do - 5.1 x 10-5 m2/s and Qd-154 kJ/mol. You will find the table below useful. erf(z) erf(z)z erf(z) 0 0 0.55 0.5633 1.3 0.9340 0.025 0.02820.600.6039 1.4...
Nitrogen from a gaseous phase is to be diffused into pure iron at 700°C. If the surface concentration is maintained at 0.12 wt% N, what will be the concentration (in weight percent) 3.9 mm from the surface after 6.5 h? The diffusion coefficient for nitrogen in iron at 700°C is 4.1 x 10-10 m²/s. 1.7 z erf(z) 0.00 0.0000 0.025 0.0282 0.05 0.0564 0.10 0.1125 0.15 0.1680 0.20 0.2227 0.25 0.2763 0.30 0.3286 0.35 0.3794 0.40 0.4284 0.45 0.4755 0.50...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at a position 2.9 mm into an iron-carbon alloy that initially contains 0.031 wt% C. The surface concentration is to be maintained at 1.2 wt% C, and the treatment is to be conducted at 1180°C. Assume that Do = 5.1 x 10-5 m2/s and Qd-154 krmol. You will find the table below useful. er(z) erf(z)erf(z) 0.55 0.5633 1.3 0.9340 0.025 0.0282 0.60 0.6039 1.4 0.9523...
Determine the carburizing time (in s) necessary to achieve a carbon concentration of 0.44 wt% at a position 1.4 mm into an iron-carbon alloy that initially contains 0.031 wt% C. The surface concentration is to be maintained at 1.2 wt% C, and the treatment is to be conducted at 1130°C. Assume that Do -5.1 x 10-5 m2/s and Qd 154 kJ/mol. You will find the table below useful. erf(z) erf(2)z erf(z) 5633 1.3 0.9340 0.025 0.0282 0.60 0.6039 1.4 0.9523...
You are overseeing the carburizing of gears. You find that a
batch of gears us ub a urnace and that the temperature has been set
too low by 25*c You decide to solve the problem by extending the
carburization time so that an equivalent amount of diffusion takes
place
.11 h You are overseeing the carburization of gears. You find that a batch of gears is in a furnace and that the temperature has been set too low by 25...
please solve
2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an oxygen-rich and virtually carbon-free atmosphere at 1325 K (1052°C). Under these circumstances the carbon diffuses from the alloy and reacts at the surface with the oxygen in the atmosphere-that is, the carbon concentration at the surface position is maintained essentially at 0 wt% C. (This process of carbon depletion is termed decarburization.) At what position will the carbon concentration be 0.25 wt% after a...
please solve it as soon as u can
2 Chapte c Antrop G Antrop 4R0* G The di * This is * The Di Solved * Math + missouri.instructure.com/courses/23331/assignments/513990 ?module_item_id=1411967 Question 4 0/3 View Policies Show Attempt History Current Attempt in Progress Ses An iron-carbon alloy initially containing 0.245 W i s exposed to an oxygenrich and virtually carbon-free atmosphere at 1100°C. Under these drcumstances the carbon diffuses from the allorandreacts at the surface with the oxygen in the atmosphere...
An iron-carbon alloy initially containing 0.221wt% Cis exposed to an oxygen-rich and virtually carbon-free atmosphere at 1090'C. Under these circumstances the carbon diffuses from the alloy and reacts at the Surface with the cxygen in the atmosphere; that is, the carbon concentration at the surface position is maintained essentialy at 00 wt% C.At what position will the carbon concentration be 0.166 wt% after a 6 h treatment? The value of D at 1090°C is 5.5x 100/s erfizk erflr) erfiz) 000...
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