Introduction to Materials Science: Diffusion Phenomena

This lecture covers the dissemination and behavior of high temperature materials, focusing on the diffusion of atoms in materials and its role in various processes such as solidification of alloys, growth of nanowires, and semiconductor doping. The instructor explains the concepts of atomic diffusion, mobility, and chemical diffusion, illustrating them with examples like the diffusion of phosphorus atoms in silicon. Additionally, the lecture discusses case-hardening techniques like carburizing to improve wear resistance and fatigue strength. The presentation includes formulas and constants related to diffusion phenomena and provides insights into the evolution of materials over time.