1.What are the major mechanisms of solid state diffusion? 2.What is carburizing process? Its purposes? What is decarburizing? 3.What is case hardening? 4.What is the major driving force for atomic diffusion? 5.What is diffusion flux? How is it calculated? 6.What is steady-state diffusion? Fick’s first law? 7.What is nonsteady-state diffusion? Fick’s 2ndlaw?