Stacking fault

a stacking fault is a two-dimensional lattice defect in certain crystal structures. It steps z. B. in the cubic-face-centered crystal structure up, those as stacking of crystal planes with the succession ABC ABC… to be described can. This regularity is interrupted (z. B. ABCBCABC…) a stacking fault is present in such a way. The stacking fault is an important lattice defect it for the formation of grain boundaries leads there and so the education prevented by single crystals. Stacking faults develop, if a Partialversetzung runs by the crystal. The smaller the energy necessary for it (stacking fault energy, stacking putrefies energy, to SFE) is, can the easier a stacking fault be formed. Silver has a low SFE (20mJ/m ²), (screws) transfers can therefore easily into Partialversetzungen split up and the firmness rises. The SFE von Aluminium is very highly (180mJ/m ²), (screws) transfers hardly splits up, that is also a reason for the low firmness of aluminium