why vacancy diffusion is more slow than interstitial diffusion?

Q: Compare interstitial and vacancy atomic mechanisms for diffusion and cite two reasons why…

A: Diffusion is a process of movement of particles or atoms from one place to other within a structure.…

Q: ..An experiment is conducted to determine the variation of the diffusion coefficient as a function…

A: Answer: The value for the activation energy Qd (eV/atom) based on the experimental data is 0.232…

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: 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: 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: Q1) A) The diffusivity of Silver atoms in solid Silver metal is (1 x 10-17 ) at m2 ( 500° C) and ( 7…

A: Given data,   diffusivity = 1×10-17  m2/sat a temperature = 500°Cdiffusivity2 = 7×10-13 m2/sat a…

Q: Cite two reasons why interstitial diffusion is normally more rapid than vacancy diffusion.

A: Interstitial diffusion is a diffusion method in which small solutes particles occupy the…

Q: If we have a system diffusing with a diffusion flux that is constant over time, [a] What do we call…

A: If we have a system diffusing with a diffusion flux that is constant over time, [a] What do we call…

Q: :Question 5 A. What are the conditions of diffusion ?mechanisms إجابتك B. What are the benefits of a…

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Q: The preexponential and activation energy for the diffusion of chromium in nickel are 1.1 × 104 m2/s…

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Q: What are the Miller Indices for the plane?

A: What are the Miller Indices for the plane? Answer: ( 1 1 1)

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

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Q: 0.015M solution of hydrogen

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Q: At approximately what temperature (in Kelvin) would a specimen of an alloy have to be carburized for…

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Q: Jsing the equation d = VD · t, where "d' is the layer thickness, "D" is the diffusion coefficient…

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Q: Why is the rate of interstitial diffusion mechanism higher than that of vacancy diffusion? * (4…

A: Solution:   The correct option and the necessary explanation is given below:

Q: 20- "Diffusion is slower Which one of the following is suitable to complete this sentence? A- for…

A: Diffusion can be defined as the mass transport by atomic motion from regions of higher…

Q: calculate the self-diffusivity for iron atoms diffusing through an fcc iron lattice at 1000∘C

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Q: Determine the Miller indices of plane as shown in the figure below

A: A moment is a movement of the body when a body is rotating on an axis. The moment is also known as…

Q: Interstitial diffusion requires the solute atom to be ___________ than the matrix atoms

A: In Diffusion, the atoms move in a material. There are several reactions in solids and liquids which…

Q: Mechanical Engineering At approximately what temperature (in Kelvin) would a specimen of an alloy…

A: Answer: The temperature at which a specimen of an alloy to be carburized for 1.3 hr: T = 1180.877 K

Q: Describe what diffusion is and draw schematic illustrations of diffusion mechanisms

A: Diffusion is defined as a phenomenon in which the atoms, ions, and molecules' movement occurs. The…

Q: One method of fabricating complex aerospace components is diffusion bonding. We wish to join a…

A: In the given pproblem,A Ni sheet and a FCC iron is to be joint.

Q: Explain self-diffusion of nickel.

A: The transfer of a chemical from a high-concentration area to a low-concentration area is referred…

Q: what are the miller indices of the plane stu in the diagram shown in the image attached

A: Draw the given plane and choose the origin as follows:

Q: Compare briefly between self-diffusion and interdiffusion concept.

A: Compare briefly between self-diffusion and interdiffusion concept.

Q: Compare the diffusion coefficients for hydrogen and nitrogen in FCC iron at 1000°C and explain the…

A: Determine the diffusion coefficient of hydrogen in FCC iron by using the following…

Q: Give three examples of materials processes that rely on diffusion in solids and explain how…

A: Three examples of material process that rely on diffusion are 1. Case hardening 2. Doping…

Q: Calculate the value of the diffusion coefficient D (in m^2/s) at 694°C for the diffusion of some…

A: Write the value of D0.   D0=5.6×10-5 m2/s   Write the value of Qd.   Qd=177 kJ/mol=177 kJ/mol×1000…

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

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Q: how can I determine the regiochemical outcome of a compound from its H' NMR

A: The best way to check what you have (and how pure it is) is to try simple analysis first and then…

Q: At approximately what temperature (in Kelvin) would a specimen of an alloy have to be carburized for…

A: Given Data: The value of D0=1.4×10-4 m2/s. The value of Qd=147 kJ/mol. The time is t1=2.5 h and…

Q: Why is the rate of interstitial diffusion mechanism higher than that of vacancy diffusion? *

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Q: 5-15 Compare the diffusion coefficients of car- bon in BCC and FCC iron at the allotropic…

A: Draw the given diagram for carbon in BCC and FCC iron only.   In the above diagram, the diffusion…

Q: Please kindly help. I will give a like. Thank you! a. Describe the S-curve model of diffusion on…

A: Rogers diffusion of innovation provides a heuristic framework for analyzing the diffusion of…

Q: What does annealing do for oriented films?

A: Annealing is the process of gently heating a metal or alloy to a proper temperature for a period of…

Q: Which of the following statement(s) is/are correct? i. Rapid diffusion at hot-working temperatures…

A: Diffusion process is faster for the high temperatures and Hot working is a manufacturing process in…

Q: Compare the diffusion coefficients of carbon in BCC and FCC iron at the allotropic transformation…

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Q: Problem 3. Phosphorus is diffused into a thick slice of silicon with no previous phosphorus in it at…

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Q: If the diffusion coefficient for carbon into FCC Iron at a given temperature T is equal to 1.25 x…

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Q: The activation energy for the diffusion of C in Cr is 111,000 j/mol. Calculate the diffusion…

A: Answer:  4.6324 x 10-11 m2/sFor a step-by-step solution have a look through the attached pictures of…

Q: Show that the atomic packing factor for BCC is 0.68.

A: Atomic packing fraction of Body-centered cubic crystal

Q: Explain how a “shrink-wrapping" experiment could be performed to encapsulate a Cs* ion in a…

A: Shrink-wrapping is a material that is made up of a polyester plastic film. If pressure or heat is…

Q: Consider a dispersion strengthened alloy with average interparticle spacing of L. If Nv is he number…

A: Write the formula for the volume fraction of particles using the given data. Vp=112πd3Nv1…

Q: Vacancy diffusion vs interstitial diffusion (when they can happen?)

A: Diffusion is a process through which the atoms migrate from one place to another within the crystal.…

Q: Answer in 2 to 3 sentences. How does point defect affects the property of a material. Why does…

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Q: Determine the miller indices for the plane given.

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The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.