Dissolved substances have to pass through the cell membrane to get into or out of a cell. Diffusion is one of the processes that allows this to happen.Diffusion diffusion: The movement of particles (molecules or ions) from an area of higher concentration to an area of lower concentration occurs when particles spread.They move from a region where they are in high concentration to a region where they are in low concentration.Diffusion happens when the particles are free to move. This is true in gases and for particles dissolved in solutions.Particles diffuse down a concentration gradient, from an area of high concentration to an area of low concentration.issolved substances have to pass through the cell membrane to get into or out of a cell. Diffusion is one of the processes that allows this to happen.
Annealing is a process by which the properties of steel are enhanced to meet machinability requirements. Annealing is a process of heating the steel slightly above the critical temperature of steel (723 degrees Centigrade) and allowing it to cool down very slowly.slide 2 of 3.. Isothermal Annealing â This is a process where is steel is heated above the upper critical temperature. This causes the structure of the steel to be converted rapidly into austenite structure.
Just looking at the cards, you can see right away what was laser marked vs annealed. Annealing gives a rich black finish on 304 stainless steel (light reflection is making it look non-black in the photos) while marking doesnât â it can vary from dark brown to an almost light grey polished look.t the shop, we do a lot of steel tag laser marking and annealing so I thought it would be fun to cover the differences between these two distinctive processes but first, letâs take a look as a physical sample of each.