Appendix

10.5.4.4 Roughness profiles

Material: Aluminium oxide 96 %

• Surface after sintering
  
  Figure 227: Roughness profile measurement after sintering with
  Ra = 0,7 µm Rz = 4,8 µm
   
   
• Tumbled or vibromilled surface
  
  Figure 228: Roughness profile measurement after tumbling with
  Ra = 0,35 µm Rz = 3,6 µm
   
   
• Ground surface
  
  Figure 229: Roughness profile measurement after grinding with
  Ra = 0,3 µm Rz = 3,7 µm
   
   
• Lightly polished surface
  
  Figure 230: Roughness profile measurement after polishing with
  Ra = 0,23 µm Rz = 3,6 µm
   
   
• Surface after long polishing
  
  Figure 231: Roughness profile measurement after a long period of polishing
  Ra = 0,1 µm Rz = 2,1 µm