Select 3 materials other than ( cast iron and steel), metallic and non-metallic. At least ONE of the selected materials should change some of its properties by heat treatment (heating, cooling). Another material should change its properties by implementing the diffusion concept. Subsequently, discuss the following points:

1- Material properties.

2- Material applications.

3- Describe all characterization equipment related to each material.

4- The way of changing mechanical properties (if applicable).

5- Describe the heat treatment methodology (if applicable).

6- Discuss all the above points

7- Provide a short conclusion

8- References