MTL 200 Lecture 4: Chapter 4
Document Summary
There is no such thing as a perfect crystal. Many of the important properties of materials are due to the presence of imperfections. Vacancies: vacant lattice site where an atom is missing. Relationship between the equilibrium number of vacancies nv and the absolute temperature t. Qv is the energy required for the formation of vacancy aka the activation energy. Self-interstitial, a host atom that is positioned on an interstitial site. Alloy: metallic material composed of two or more elements. Addition of impurity atoms to a metal results in the formulation of. Solid solution: a homogenous crystalline phase containing two or more elements, including solute and solvent. Solute: a dissolved substance present in a minor concertation. Solvent: the component of a solution present in the greatest amount. Substitutional: solute or impurity atoms replace or substitute for the host atoms. Factors affecting the solubility of substitutional solid solution.