Corrosion Prevention and Control by Design At ambient temperatures significant corrosion occurs only if moisture is present. Thus, surfaces should be exposed as little as possible to moisture and arranged so that they dry out quickly after wetting. In practice all surfaces are at risk, vertical surfaces suffer ‘run off’, Read more…
Having produced and formed a metal, it is necessary to ensure that it performs well during service. A major consideration in this is corrosion. This involves loss of material from the metal’s surface and can be divided into two processes: dry oxidation and wet corrosion. Oxidation and Corrosion of Metals Read more…
Many construction materials, particularly metals and some ceramics, consist of small crystals or grains within which the atoms are packed in regular, repeating, three-dimensional patterns giving a longrange order. The grains are ‘glued’ together at the grain boundaries; we will consider the importance of these later, but first we will Read more…
Pure metals in the ‘as-cast’ condition after slow cooling are generally soft, have low yield stresses and are very ductile; this is a consequence of the ease of dislocation movement or slip. They are therefore unsuitable for use as a structural material, with perhaps the most critical property for design Read more…