Diffusion of carbon into BCC iron for 12 hours at a temperature of 500 °C results in a carbon concentration of 0.2 wt% at a depth 2 mm from the surface. How long would it take to get a concentration of 0.2 wt% at a depth 3 mm from the surface at 500 °C?

Q: Q2) The nearby figure shows a plot of the logarithm (to the base 10) of the diffusion coefficient…

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Q: Calculate the diffusion coefficient for the interdiffusion of Zinc into Copper at  500 °C .

A: Required data from the standard table for the diffusion of zinc into copper.

Q: Carbon is allowed to diffuse through a steel plate 11 mm thick. The concentrations of carbon at the…

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Q: Consider an alloy that is undergoing carburizing process, initially has a uniform carbon…

A: this is a problem of a nonsteady-state diffusion problem in which the surface composition is…

Q: Nitrogen from a gaseous phase is to be diffused into pure iron at 700°C. If the surface…

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Q: Design a spherical tank, with a wall thickness of 2 cm that will assure that no more than 50 kg of…

A: Given Thickness = 2 cm Operating temperature = 500 oC=773.15 K To find Preferred material for tanl

Q: The activation energy for the diffusion of atomic species A in metal B is 118 kJ/mol. Calculate the…

A: D1=Diffusion Coefficient At 1140=6.1×10-11 m2/sT1=Temperature=1140°C=1413.15 kT2=840°C=1113.15…

Q: enerate any stress concentration. At the fillets the stress concentration factor is given Kt = 1.5…

A: GivenAt the fillets the stress concentration factor is given Kt = 1.5 Modulus E=150 GPa Tensile…

Q: why diffusion coefficients of carbon in BCC and FCC in iron at temperature 912 c are difference?…

A: Data given-  Carbon  Bcc and fcc  Temprature T = 912°C  = 1185 K .

Q: The diffusion coefficients for iron in nickel are given at two temperatures: T(K) 1273 1473 D (m²/s)…

A: The diffusion constant at T1 = 1273 K is The diffusion constant at The value of the gas constant is…

Q: the sample for 10 hours at 930°C to achieve 0.4% carbon, 1cm from the surface. To Consider the…

A: To determine the concentration of carbon, given data aretemperature, time taken depth of the surface…

Q: why diffusion coefficient of caarbon inBCC and FCC iron at temperature 912 is different?

A: Diffusion coefficient is a measure of the rate of diffusion of mass of a substance through each unit…

Q: Nitrogen from a gaseous phase is to be diffused into pure iron at 700°C. If the surface…

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Q: A plate of iron is exposed to a carburizing atmosphere on one side and a decarburizing atmosphere on…

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Q: Q6: The diffusion coefficients for carbon in nickel are given at two temperatures, as follows: T(°C)…

A: Given, T1 = 600 °C = 873 KD1 = 5.5 × 10-14 m2/sT2 = 700 °C = 973 KD2 = 3.9 × 10-13 m2/s

Q: A dry rock weighs 250 grams and has a bulk density of 2.5 grams per cubic centimeter. When saturated…

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Q: Rank the magnitudes of the diffusion coefficients from greatest to least for the following systems:…

A: Diffusion coefficient is the amount of particular element that diffuses across a unit area in 1 s…

Q: Compute diffusion coefficients for the interdiffusion of carbon in both (a) α-iron (BCC) and (b)…

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Q: At what temperature (in Kelvin) will the diffusion coefficient for the diffusion of species A in…

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Q: ,compute the temperature (in K)

A: Given: t=11 mm C1= 0.85 kgC/m3 C2=0.42 kgC/m3 Activation energy =80000 J/mol To determine: The…

Q: 14.43 Steel is carburized in a high-temperature process that depends on the transfer of carbon by…

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Q: The diffusivity for the diffusion of zinc in copper can be calculated as,

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Q: The surface of a solid sphere is covered by a monolayer of receptors for a ligand. When the ligands…

A: Givendiffusion coefficient=4.8×10-9m2/sSphere is constant of=1.2nMsphere radius=2.8μmConcentration…

Q: The purification of hydrogen gas is possible by diffusion through a thin palladium sheet. Calculate…

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Q: For a steel alloy it has been determined that a carburizing heat treatment of 18 h duration at 885°C…

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Q: The diffusion coefficients for iron in nickel are given at two temperatures: T(K) D(m2/s) 1273…

A: Given Data: The diffusion constant at T1 = 1273 K is D1 = 9.4×10-16 m2/s. The diffusion constant at…

Q: mix two fluids together, and I use the same mass of each fluid. They are completely miscible; in…

A: Composition is the collection of mole fractions that represents a system's molar chemical…

Q: Calculate the value of the diffusion coefficient D (in m2/s) at 750°C for the diffusion of some…

A: Given D = 7.8 x 10-11 m2/s           Q = 118 kJ/mol  , T = 1140°c = 1413 k           R = 8.34…

Q: The diffusion coefficients for carbon in nickel are given at two temperatures: T("C) D(m²/s) 600 5.5…

A: Given : S.No T °C D (m2/s) 1 600 5.5×10-14 2 700 3.9×10-13

Q: The diffusion coefficient for carbon in BCC iron at 400C and 900C is given as 3.80x10-13 and…

A: First with the given data we will find the unknowns of the diffusion equation and then calculate the…

Q: If you lived in Fick's time and try to formulate a diffusion equation for the up-hill diffusion,…

A: Diffusion happens as a result of a concentration gradient, which is defined as the change in…

Q: If this experiment was conducted using a sphere made of Nylon (density = 1.15 g/cm3) in both water,…

A: Concept: Density of water- 1 gr/cm3. The Nylon sphere of density 1.15 gr/cm3.Since this sphere…

Q: Consider the radial diffusion of a gaseous species (A) through the wall of a plastic tube (B), and…

A: following is the answer to the above question-

Q: .5 moles of Neon gas at 210C has a volume of 0.935 m3. Without changing the pressure, the volume is…

A: No. of moles of Neon=0.5 molesTemperature of Neon gas, T1=21o C=21+273.15=294.15 Kinitial volume of…

Q: The diffusion coefficients for species A in metal B are given at two temperatures: D (m²/s) 8.54 x…

A: The given question is solved using the ficks law of diffusion.

Q: You are asked to determine the concentration of a diffusing gas at a given depth on a metal surface…

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Q: The diffusion coefficients for metal A in metal B are given at two temperatures: T (K) D (m2/s)…

A: From the first given data:

Q: The activation energy for the diffusion of atomic species A in metal B is 114 kJ/mol. Calculate the…

A: D1=Diffusion Coefficient At 1140=76.7×10-12 m2/sT1=Temperature=1170°C=1443KT2=891°C=1164 KE=The…

Atomic diffusion in solids

In material science, diffusion can take place in solid, liquid, and gases. In solids, atomic diffusion can take place with the help of thermally activated and randomly vibrating atoms. The atomic diffusion in solids is complex and very slow in comparison to atomic diffusion in liquids and gases because the interatomic distance between the atoms is smaller in solids as compared to liquids and gases.