Question

Explain how diffusion in ceramics is different from diffusion in metals

Explain how diffusion in ceramics is different from diffusion in metals

Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #2

Diffusion in ceramics is mainly due to point defects exchange with atoms, because ceramics are bonded by covalent or ionic bond inorder to break these bond extremely high amount of energy is required. Point defects such as vacancies and interstitials are involved in atomic diffusion mechanisms.

In metals diffusion atoms mainly diffuse through vacancy, subsitutional & interstitial means within the crystal. Diffusion in metals also takes place due to grain boundaries defects.

Higher temperature is required to activate ceramics as they can withstand higher temperature than metals.

answered by: anonymous
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Will the diffusion in metals and ceramics be generally slower than in polymers?
Will the diffusion in metals and ceramics be generally slower than in polymers?
Why are polymers lighter than metals and ceramics? Two reasons.
Why are polymers lighter than metals and ceramics? Two reasons.
13)Describe point defects in ceramics and metals, and the differnece between them
13)Describe point defects in ceramics and metals, and the differnece between them
What is ATP-Binding Cassette (ABC)? How is it different from diffusion?
What is ATP-Binding Cassette (ABC)? How is it different from diffusion?
How are engineering ceramics densified? Explain the driving force for densification.
How are engineering ceramics densified? Explain the driving force for densification.
Traditional introductory materials science texts, concerned mostly with metals and ceramics, devote considerable space to crystal...
Traditional introductory materials science texts, concerned mostly with metals and ceramics, devote considerable space to crystal structures and crystal defects. These topics have been studied for polymers, but they are hardly mentioned here. Why are they much less important in polymers?
Explain why tin, zinc, and magnesium metals have different rates of reaction with the same acid...
Explain why tin, zinc, and magnesium metals have different rates of reaction with the same acid solution
(i) The chemical properties of first-row transition metals are generally different from those of their second...
(i) The chemical properties of first-row transition metals are generally different from those of their second row analogues. By contrast, second row transition elements have similar chemistry as their third-row analogues. Explain. (ii) Explain why the stability of higher oxidation states increases down a group of transition metals (e.g. highest oxidation states of Fe and Os are +6 and +8, respectively). (1 mark)
explain why the rate of the diffusion of water (osmosis) can change under different conditions: Water...
explain why the rate of the diffusion of water (osmosis) can change under different conditions: Water will diffuse ____________________________________ when__________________________________________________ because_______________________________________________ .
1a. Explain the process of plastic deformation of metals by twinning b. List the forms in...
1a. Explain the process of plastic deformation of metals by twinning b. List the forms in which iron ores can exist with two examples each and their chemical composition c. State two principal ores with their chemical composition for these non ferrous metals: 1. Magnesium. 2. Copper d. List and describe two types of surface defect with appropriate diagram. e. Describe interstitial diffusion mechanism
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT