ENGINEERING MATERIALS

                                WEEK # 3

                       CRYSTAL STRUCTURE OF MATERIALS
                       ------------------------------




           1.-  A CLASSIFICATION OF SOLIDS

                1.1.- CRYSTALLINE SOLIDS

                1.2.- NON-CRYSTALLINE SOLIDS

                1.1.- INTERMEDIATE CASES



           2.-  ATOMIC ARRANGEMENTS IN CRYSTALLINE SOLIDS

                2.1.- INTRODUCTION TO CRYSTALLOGRAPHY

                2.2.- MOTIVE AND LATTICE
                     
                2.1.- BRAVAIS LATTICES
                
                2.2.- UNIT CELLS, LATTICE POINTS, LATTICE DIRECTIONS 
                        AND LATTICE PLANES
                 
                2.5.- EXAMPLES OF CRYSTALLINE STRUCTURES
                        
                      * METAL CRYSTALS
                      * CERAMIC CRYSTALS
                      * ORGANIC POLYMER CRYSTALS

            

           3.-  EFFECT OF CRYSTALLINE STRUCTURE ON ELECTRONIC STRUCTURE
                                     

                3.1.- INTERACTION BETWEEN ELECTRONS AND THE LATTICE IN
                      A CRYSTAL
 
                3.2.- BRILLOUIN ZONES

 
 
           4.-  EFFECT OF CRYSTALLINE STRUCTURE ON PROPERTIES

                4.1.- MECHANICAL PROPERTIES

                4.2.- NON-MECHANICAL PROPERTIES
                                                    


          5.-  NON-CRYSTALLINE SOLIDS

               5.1.- ATOMIC ARRANGEMENTS IN LIQUIDS

               5.2.- ATOMIC ARRANGEMENTS IN AMORPHOUS SOLIDS




          6.-  MATERIALS CHARACTERIZATION METHODS

               6.1.- DIFFRACTION METHODS

                      * X-RAYS
                      * ELECTRONS
                      * NEUTRONS

               6.2.- ELECTRON MICROSCOPY

                      * TRANSMISSION
                      * SCANNING

               6.3.- OPTICAL MICROSCOPY

               6.4.- SPECTROSCOPY

                      * X-RAY
                      * AUGER ELECTRON
                      * ATOMIC ABSORPTION

               6.5.- OTHER STRUCTURAL CHARACTERIZATION TECHNIQUES

                      * SCANNING TUNNELING MICROSCOPE