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The activation for the climb is equal to _____ where; Uj = Activation for nucleation of jog Uv = Activation for formation of the vacancy Um = Activation for formation of the self diffusion Ui = Activation for formation of the interstitial diffusion

The activation for the climb is equal to _____ where; Uj = Activation for nucleation of jog Uv = Activation for formation of the vacancy Um = Activation for formation of the self diffusion Ui = Activation for formation of the interstitial diffusion Correct Answer Uj+Uv+Um

In the crystal, there is thermodynamically equilibrium number of jog present. The number of jogs present is a crystal is governed by the rate of formation of vacancy and diffusion of an atom to dislocation site.

Related Questions

During the jog movement, vacancy formation is faster than interstitial atom formation.
Consider the following statements regarding crystal defects: 1. In metals, a self-interstitial introduces relatively large distortions in the surrounding lattice because the atom is substantially larger than the interstitial position in which it is situated. 2. All crystalline solids do not contain vacancies and, it is possible to create such a material that is free of these defects. 3. Impurity point defects are found in solid solutions, of which there are two types: Substitutional and interstitial.  Which of the above statements is/are correct?
At very small driving forces, when activation energy barriers for nucleation are high, the highest nucleation rates will be produced by grain corner nucleation.
Jack takes 20 minutes to jog around the race course one time, and 25 minutes to jog around a second time. What is his average speed in miles per hour for the whole jog if the course is 3 miles long?
The positive climb involves diffusion of _____ while negative climb involves diffusion of _____
Interstitial diffusion is generally faster than diffusion by vacancy mode. This is because:
Vacancy diffusion is slower than interstitial diffusion, because_______
The activation enthalpy for interstitial diffusion increases as the size of the interstitial atom increases.
Consider the following statements regarding the importance of diffusion and choose the correct answer:
1. The exchange of gases takes place by the principle of dependent diffusion
2. The process of diffusion is involved in transpiration of water vapours
3. The ions are absorbed by the simple diffusion during passive salt uptake
4. Diffusion is an effective means of transport of substances over a very short distance and helps in the translocation of food materials
A monkey has to climb a pole of a height of 46 m. It can climb 6 m in first minute and comes down 2 m in second minute. This process will be repeated till the monkey reaches the top. When will the monkey climb on the pole?