Page 69 - Microsoft PowerPoint - lecture1.ppt
P. 69

2.5 Complex structures


                 Intermetallics- overview








                Solid solutions: Example: Rb Cs                               1-x  BCC-structure, disordered
                                                                        x
                • chemically related

                • small difference of electronegativity

                • similar number of valence electrons

                • similar atomic radius
                • (high temperature)









                  Ordered structures: from complex building units to complex structures


                                                                                       Rule: complex structures




                  Exception:

                  simple structures






                             CuZn
   64   65   66   67   68   69   70   71   72   73   74