Correlation between the surface quality and the abrasive grains wear in optical glass lapping

• Published in: Tribology international Vol. 40; no. 3; pp. 498 - 502
• Main Authors: Belkhir, N., Bouzid, D., Herold, V.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.03.2007; Elsevier
• Subjects: Abrasive wear; Alumina abrasive grains; Applied sciences; Exact sciences and technology; Fracture mechanics (crack, fatigue, damage...); Friction, wear, lubrication; Fundamental areas of phenomenology (including applications); Glass; Industrial metrology. Testing; Lapping; Machine components; Mechanical engineering. Machine design; Physics; Solid mechanics; Structural and continuum mechanics; Alumina abrasive grains; Lapping; Abrasive wear; Glass; Grain size; Scanning electron microscopy; Particle size; Optical microscope; Roughness; Rupture; Optical surface; Rough surface; Grinding; Oxide ceramics; Roundness; Laser; Abrasives; Alumina; Surface conditions; Finishing; Tribology
• ISSN: 0301-679X; 1879-2464
• DOI: 10.1016/j.triboint.2006.05.001

The subject of this study is to determine the relation between the optical glass surface quality and the wear of abrasive grains used in finishing process. The glass surface quality was characterized by the roughness (rms,CLA and peak to valley). Alumina abrasive grains (Al 2O 3) are used with average sizes (80, 40, 20, 7 μm) respectively. After 2 min lapping for each fraction of grains the following RMS are obtained 1.39, 0.57, 0.51, 0.33 μm. The corresponding peak to valley are respectively 7.5, 3.66, 2.88, 2.10 μm. The grains wear was characterized by the grains edges wear (roundness) and by their fractures. An optical microscope (CMM Scope Check) and a SEM are used for their observation. The alumina grains size distribution was also studied using a laser diffraction particle size analyzer (Shimadzu Sald-2001).